20001–20100
|-
| 20001 Marinakoren || || Marina Koren (born 1990), American science and astronomy writer for The Atlantic ||
|-id=m002
| 20002 Tillysmith || 1991 EM || Tilly Smith (born 1994), British girl who, by recognising the signs of a tsunami, saved many lives on the island of Phuket, December 26, 2004 ||
|-id=m003
| 20003 Andorfer || || Gregory P. Andorfer (1951-2020), former executive director of the Maryland Science Center. ||
|-id=m004
| 20004 Audrey-Lucienne || || Audrey-Lucienne Van Landeghem, last visitor at the "Space is For You" Exhibition at the Royal Observatory of Belgium in 2001 ||
|-id=m005
| 20005 Zagarella || || Roberto Zagarella (born 1953), Italian astronomer and founding observer of the PRISMA meteor network ||
|-id=m006
| 20006 Albertus Magnus || || Albertus Magnus, German theologian, philosopher and naturalist. ||
|-id=m007
| 20007 Marybrown || 1991 LR || Mary J. Brown, American amateur astronomer who assisted in organizing the photographic glass plate archive of the 1.2-m Schmidt Oschin Telescope at Palomar Observatory ||
|-id=m008
| 20008 Adacarrera || || Ada Amelia Carrera Rodriguez (1936-2020), Mexican motorcyclist, astronomer, and advocate for astronomy education ||
|-id=m009
| 20009 Joerao || || Joseph Rao, chief meteorologist and science editor at News 12 Westchester, guest lecturer at the Hayden Planetarium ||
|-id=m010
| 20010 Tomfrench || || Thomas W. French (b. 1950), a biologist and former assistant director of MassWildlife’s Natural Heritage and Endangered Species Program, led the successful reintroduction of peregrine falcons and bald eagles in Massachusetts after their native populations were wiped out due to extensive use of the insecticide DDT from the 1940s to 1972. ||
|-id=m011
| 20011 Baryshnikov || || Mikhail Baryshnikov (b. 1948), a Russian-born American ballet dancer, choreographer, and actor. ||
|-id=m012
| 20012 Ranke || || Leopold von Ranke, a professor of history in Berlin from 1825 to 1871. ||
|-id=m013
| 20013 Nureyev || || Rudolf Nureyev (1938–1993), a Russian-born ballet dancer, director, and choreographer. ||
|-id=m014
| 20014 Annalisa || || Annalisa Scarrone (b. 1985), an Italian singer and songwriter. ||
|-id=m015
| 20015 Liguori || 1991 SR || Domenico Liguori (b. 1970), an Italian physicist and teacher. ||
|-id=m016
| 20016 Rietschel || || Ernst Friedrich August Rietschel, German sculptor. ||
|-id=m017
| 20017 Alixcatherine || || Alix Catherine de Saint-Aignan (born 2002) is the eldest daughter of the discoverer ||
|-id=m018
| 20018 Paulgray || || Paul Gray (born 1972), Canadian amateur astronomer who has served as President of the Royal Astronomical Society of Canada's centers in Halifax and New Brunswich ||
|-id=m019
| 20019 Yukiotanaka || 1991 VN || Yukio Tanaka, Japanese baseball infielder for the Hokkaido Nippon Ham Fighters ||
|-id=m020
| 20020 Mipach || || Mike Powell (born 1959), Paul Owen (born 1960), and Chris Curwin (born 1959); hosts of The Sunday Night Astronomy Show, a live web show about astronomy ||
|-id=m021
| 20021 Kevinkell || || Kevin Kell (born 1963), Canadian amateur astronomer, served with the RASC's Kingston Center as President, Secretary, Treasurer, Equipment Loan Coordinator, and editor of the club's newsletter ||
|-id=m022
| 20022 Dontown || || Donald Town (born 1953), Canadian engineer, photographer, and amateur astronomer; President of the RASC's Belleville Center ||
|-id=m023
| 20023 Jackmegas || || Jack Megas (born 1946), planetarium educator at the Springfield Science Museum in Springfield, Massachusetts ||
|-id=m024
| 20024 Mayrémartínez || || Mayré Adriana Martínez Blanco, Venezuelan professional singer, winner of the 2006 "Latin American Idol" contest ||
|-id=m025
| 20025 Petronaviera || || Petrona Viera (1895-1960), deaf Uruguayan painter and the first female professional painter in her country ||
|-id=m026
| 20026 Bettyrobinson || || Betty Robinson (b. 1953) has been an RASC member since 1981. In Toronto Centre, she was Secretary from 1984–1987 and worked on their newsletter for four years. In Mississauga Centre, she edited the newsletter and served as Councillor. She served as Director of the RASC and was copy editor of the Observer's Handbook. ||
|-id=m027
| 20027 Michaelwatson || || Michael S. F. Watson (b. 1952) is a lawyer and a member of the RASC since 1970. He is interested in eclipses and photography. ||
|-id=m028
| 20028 Stansammy || || Stan Sammy (b. 1946), a Trinidad-born Canadian amateur astronomer. ||
|-id=m029
| 20029 Dorner || || Rudolph Dorner (1948–2022), a German-Canadian amateur astronomer, an electrician, machinist, investor and telescope collector. ||
|-id=m030
| 20030 Bawtenheimer || || Daniel C. Bawtenheimer (1900–1981), a Canadian amateur astronomer. ||
|-id=m031
| 20031 Lakehead || 1992 OO || In the early 20th century, this name described Fort William and Port Arthur in northwestern Ontario, because the twin cities were located at the head of Lake Superior. Significant because grain from the Canadian prairies was brought by rail to ships there, the cities merged in 1970 under the name Thunder Bay. It is still often referred to as the Lakehead. ||
|-id=m032
| 20032 McNish || || Larry McNish (b. 1950), a computer science engineer and Canadian amateur astronomer. ||
|-id=m033
| 20033 Michaelnoble || || Michael P. Noble (1954–2022), a Canadian amateur astronomer. ||
|-id=m034
| 20034 Greenhalgh || || Paul Greenhalgh (1957–2017), a Canadian amateur astronomer. ||
|-id=m035
| 20035 Lauriroche || || Lauri Roche (b. 1949), a retired math teacher who joined RASC Victoria Centre in 1995. ||
|-id=m036
| 20036 Marcboucher || || Marc Boucher (b. 1964), a Canadian entrepreneur, writer, editor and publisher. ||
|-id=m037
| 20037 Duke || || Michael B. Duke, American selenologist areologist and meteoriticist, at one point curator of the lunar samples returned from the Moon, later chief of the Lunar and Planetary Sciences Division of the Johnson Spacecraft Center ||
|-id=m038
| 20038 Arasaki || || Yoshikuni Arasaki (born 1953) has been chief of the Okinawa Prefecture Ishigaki Youth House since 2017. He is a well-known amateur astronomer and popularizer of astronomy in Ishigaki Island. He enjoys observing and photographing comets, nebulae and star clusters through his telescope. ||
|-id=m039
| 20039 Danfalk || || Daniel (Dan) Falk (b. 1966), a Canadian author and former co-host of the BookLab podcast. ||
|-id=m040
| 20040 Tatsuyamatsuyama || || Tatsuya Matsuyama (born 1983) was born in Kochi city, Japan. He teaches at University of Kochi Primary School and works as an instructor at Geisei Observatory. He is dedicated to improving mathematical skills and increasing astronomical knowledge of primary school students. ||
|-id=m041
| 20041 Gainor || || Christopher Gainor (b. 1954), a Canadian journalist, historian. and amateur astronomer ||
|-id=m042
| 20042 Mortillaro || || Nicole Mortillaro (b. 1972), a Canadian science journalist and amateur astronomer. ||
|-id=m043
| 20043 Ellenmacarthur || 1993 EM || Dame Ellen Patricia MacArthur, British solo long-distance yachtswoman ||
|-id=m044
| 20044 Vitoux || || Frédéric Vitoux (born 1944), a French writer and journalist known for his novel Bébert, Le chat de Louis-Ferdinand Céline (1976) ||
|-id=m045
| 20045 Semeniuk || || Ivan Alexander Semeniuk (b. 1964), a Canadian science writer. ||
|-id=m046
| 20046 Seronik || || Gary Seronik (b. 1961) is a Canadian astronomer, photographer and writer. ||
|-id=m047
| 20047 Davidsuzuki || || David Takayoshi Suzuki (b. 1936), a Canadian geneticist and science communicator. ||
|-id=m048
| 20048 Alfianello || || Alfianello, an Italian municipality in the province of Brescia (Lombardy). ||
|-id=m049
| 20049 Antoniopresti || || Antonio Presti (b. 1957), a Sicilian patron and founder of Fiumara d'Arte, an open-air museum in Sicily. ||
|-id=m050
| 20050 Aglaonice || || Aglaonice of Thessaly (2nd or 1st century BCE), one the earliest recorded women astronomers. ||
|-id=m051
| 20051 Phanostrate || || Phanostrate (4th century BCE), a Greek midwife and physician. ||
|-id=m052
| 20052 Kellman || || Edith Kellman (1911–2007), an American astronomer. ||
|-id=m053
| 20053 Cavefish || || There are over 250 fish species that are adapted to living in subterranean caves. Small, blind, and lacking pigment, cavefishes are evolutionary marvels. Comparisons between the DNA of different cavefish species can be used to unravel geologic history. Many cavefishes are threatened by human activity. ||
|-id=m054
| 20054 Lágrimaríos || || Lidia Mabel Benavídez Tabárez (Lágrima Ríos, 1924–2006), an Afro-Uruguayan singer who excelled in candombe and tango, the two representative genres of the Río de la Plata region. ||
|-id=m055
| 20055 Maríaespínola || || María Espínola Espínola (1878–1963), a Uruguayan teacher and supervisor who founded the first school of technical studies in San José de Mayo city. ||
|-id=m056
| 20056 Roccati || || Alessandro Roccati (born 1941), Italian archaeologist and Egyptologist. ||
|-id=m057
| 20057 Fabiorubeo || 1993 GC || Fabio Rubeo (born 1973), Italian amateur astronomer. ||
|-id=m058
| 20058 Bundalian || || Ester Inocencio Bundalian (b. 1939), an experienced Philippine eclipse chaser. ||
|-id=m059
| 20059 Debswoboda || || Debra Antoinette Swoboda (1955–2025), American academic who established one of the first graduate student unions at Stony Brook. ||
|-id=m060
| 20060 Johannforster || || Johann Reinhold Forster, 18th-century German naturalist, who (with his son Georg) accompanied James Cook on his second Pacific Voyage ||
|-id=m061
| 20061 Bilitza || || Dieter Bilitza (b. 1950), a German-born American physicist and a principal author of the International Reference Ionosphere (IRI), a widely-used standard for Earth’s ionospheric plasma. ||
|-id=m062
| 20062 Matthewgriffin || || Matthew Griffin (b. 1954), an Irish astrophysicist. ||
|-id=m063
| 20063 Kanakoseki || || Kanako Seki (b. 1973), a Japanese astrophysicist. ||
|-id=m064
| 20064 Prahladagrawal || || Prahlad Agrawal (b. 1941), an Indian high-energy astrophysicist. ||
|-id=m065
| 20065 Kminek || || Gerhard Kminek (b. 1968), an Austrian astronomer. ||
|-id=m066
| 20066 Sagov || || Stanley E. Sagov (b. 1944) is a highly respected family-practice physician who also taught at Harvard Medical School; he obtained his MD at the University of Cape Town before moving to the US. Sagov also is well known as an accomplished jazz musician. Name proposed by D. W. E. Green, whose family was attended by Dr. Sagov for nearly forty years. ||
|-id=m067
| 20067 Marthanieves || || Martha Nieves (1926–2014), Uruguayan artist and schoolteacher who made important contributions to plastic arts and culture. ||
|-id=m068
| 20068 Peterbarthel || || Pieter Dirk (Peter) Barthel, Dutch astronomer. ||
|-id=m069
| 20069 Monyer || || Hannah Monyer, Romanian-born German neurobiologist. ||
|-id=m070
| 20070 Koichiyuko || 1993 XL || Koichi Takahashi, director of the Hiroshima Chapter of the Young Astronauts Club of Japan since 1998, and his wife Yuko (a medical doctor and a pharmacist, respectively) ||
|-id=m073
| 20073 Yumiko || || Yumiko Fujii (born 1968) is married to the second discoverer ||
|-id=m074
| 20074 Laskerschueler || || Else Lasker-Schüler (1869–1945), a German-Jewish poet and playwright of the Expressionist movement ||
|-id=m077
| 20077 Borispodolsky || || Boris Yakovlevich Podolsky, Russian-American physicist. ||
|-id=m078
| 20078 Nathanrosen || || Nathan Rosen, American and Israeli physicist. ||
|-id=m080
| 20080 Maeharatorakichi || || Torakichi Maehara (1872–1950) was an amateur astronomer and one of the charter members of the Astronomical Society of Japan, which was founded in 1908. He established his own observatory and made many visual and photographic observations, including Halley's comet in 1910. ||
|-id=m081
| 20081 Occhialini || || Giuseppe Occhialini, Italian physicist. ||
|-id=m082
| 20082 Yannlecun || || Yann Andre Le Cun (born 1960), French-American computer scientist who contributed to the fields of machine learning and artificial intelligence. ||
|-id=m084
| 20084 Buckmaster || || Bill Buckmaster, American anchor of the news magazine program Arizona Illustrated ||
|-id=m096
| 20096 Shiraishiakihiko || 1994 TZ || Akihiko Shiraishi (born 1952) is a writer-editor at Asahi Press. He writes frequently about astronomy and space development. ||
|-id=m098
| 20098 Shibatagenji || || Genji Shibata (born 1940) is a medical doctor, who contributed to public welfare by establishing a hospital and a home for elderly people in Yamaguchi, Japan. ||
|}
20101–20200
|-id=m101
| 20101 Robsullivan || || Robert John Sullivan, Jr. American planetary scientist. ||
|-id=m102
| 20102 Takasago || || Takasago, a Japanese port city at the mouth of the Kakogawa River, Hyogo prefecture ||
|-id=m103
| 20103 de Vico || 1995 JK || Francesco de Vico (1805–1848), Jesuit priest and astronomer, discoverer of seven comets, and director of the Collegio Romano Observatory ||
|-id=m106
| 20106 Morton || 1995 QG || Donald C. Morton, was director of the Anglo-Australian Observatory during 1976–1986 ||
|-id=m107
| 20107 Nanyotenmondai || || Nanyotenmondai<!--#R-to-here-->, the Nanyo Citizens' Observatory, in the Sosyou park of Nanyo, Yamagata, Japan ||
|-id=m109
| 20109 Alicelandis || 1995 RJ || Alice Landis Tonry, American graduate of Tufts Medical School, realtor, farmer, and mother of the discoverer ||
|-id=m112
| 20112 Cassia || || Dennis Cassia, accomplished American astrophotographer. ||
|-id=m115
| 20115 Niheihajime || || Hajime Nihei, member of the Nanyo Astronomy Lovers Club ||
|-id=m117
| 20117 Tannoakira || || Akira Tanno (born 1940) is a historian studying folk customs and scientists in the Edo period of Japan. ||
|-id=m120
| 20120 Ryugatake || || Ryugatake<!--#R-to-here-->, a Japanese town in Kumamoto, on the east coast of the beautiful Kamishima Island, Amakusa ||
|-id=m135
| 20135 Juels || 1996 JC || Charles W. Juels (1944–2009), amateur astronomer and discoverer of minor planets ||
|-id=m136
| 20136 Eisenhart || 1996 NA || Luther Pfahler Eisenhart (1876–1965), a prolific American mathematician and professor ||
|-id=m139
| 20139 Marianeschi || 1996 QU || Edmondo Marianeschi (1922–2010) was one of the most important Italian metallurgists. He wrote important books and obtained several international patents on steel manufacturing. An amateur astronomer, he designed, among others, the Montecitorio square sundial in Rome. ||
|-id=m140
| 20140 Costitx || || Costitx, Spanish town on the island of Majorca ||
|-id=m141
| 20141 Markidger || || Mark Richard Kidger (born 1960), British-born astrophysicist of the Instituto de Astrofisica de Canarias ||
|-id=m148
| 20148 Carducci || 1996 TR || Giosuè Carducci (1835–1907) was an Italian poet, writer, literary critic and teacher, who in 1906 was the first Italian to receive the Nobel Prize in Literature. ||
|-id=m151
| 20151 Utsunomiya || || Syogo Utsunomiya, farmer and renowned amateur astronomer in Japan ||
|-id=m155
| 20155 Utewindolf || || Ute Windolf of Prescott, Arizona, is a very dear and generous friend who was particularly helpful and supportive during the long terminal illness of the discoverer's wife ||
|-id=m156
| 20156 Herbwindolf || || Herbert Windolf of Prescott, Arizona, is a very dear and generous friend who was particularly helpful and supportive during the long terminal illness of the discoverer's wife ||
|-id=m164
| 20164 Janzajíc || || Jan Zajíc, Czech student who burned himself to death to protest the 1968 occupation of Czechoslovakia † ||
|-id=m174
| 20174 Eisenstein || || Gotthold Eisenstein (1823–1852), German mathematician ||
|-id=m180
| 20180 Annakolény || || Anna Kolény took part in the birth of Slovak sovereignty in the nineteenth century. The first session of the Slovak National Council was held in 1848 in her house in Myjava ||
|-id=m187
| 20187 Janapittichová || || Jana Pittichová, Slovak-born American astronomer † ||
|-id=m193
| 20193 Yakushima || || Yakushima is a small island located to the south of Kagoshima prefecture, Japan. ||
|-id=m194
| 20194 Ilarialocantore || || Ilaria Locantore (born 1984), an Italian chemist. ||
|-id=m195
| 20195 Mariovinci || || Mario Vinci (born 1945) is a generous amateur astronomer and a great friend of the Gruppo Astrofili di Montelupo. He always stood out his availability and support during the construction of the "Beppe Forti" observatory. ||
|-id=m197
| 20197 Enriques || || Federigo Enriques, professor at the universities of Bologna and Rome ||
|-id=m200
| 20200 Donbacky || 1997 DW || Don Backy is the artistic name of the Italian singer and composer Aldo Caponi ||
|}
20201–20300
|-id=m204
| 20204 Yuudurunosato || || Yuudurunosato is the nickname of Urushiyama, located in the western area of Nanyo city ||
|-id=m205
| 20205 Sitanchen || || Sitan Chen (born 1995), an ISTS awardee in 2012 ||
|-id=m207
| 20207 Dyckovsky || || Ari Misha Dyckovsky (born 1993), an ISTS awardee in 2012 ||
|-id=m208
| 20208 Philiphe || || Philip Cody He (born 1994), an ISTS awardee in 2012 ||
|-id=m211
| 20211 Joycegates || || Joyce Gates, mentor at the ISTS in 2012 ||
|-id=m212
| 20212 Ekbaltouma || || Ekbal Touma, mentor at the ISTS in 2012 ||
|-id=m213
| 20213 Saurabhsharan || || Saurabh Sharan (born 1993), an ISTS awardee in 2012 ||
|-id=m214
| 20214 Lorikenny || || Lori Kenny, mentor at the ISTS in 2012 ||
|-id=m217
| 20217 Kathyclemmer || || Kathy Clemmer, mentor at the ISTS in 2012 ||
|-id=m218
| 20218 Dukewriter || || Duke Writer, mentor at the ISTS in 2012 ||
|-id=m219
| 20219 Brianstone || || Brian Stone, mentor at the ISTS in 2012 ||
|-id=m224
| 20224 Johnrae || || John Rae, Scottish explorer ||
|-id=m228
| 20228 Jeanmarcmari || 1997 XG || Jean-Marc Mari, French electronics engineer ||
|-id=m230
| 20230 Blanchard || || Guillaume Blanchard, French optician ||
|-id=m234
| 20234 Billgibson || || William C. Gibson, the payload manager of the New Horizons Pluto Kuiper Belt mission ||
|-id=m237
| 20237 Clavius || || Christopher Clavius (1538–1612) was a German mathematician and astronomer. He figured out where to place the leap years in the Gregorian calendar. Pope Gregory XII revised the Julian calendar with the assistance of Clavius. ||
|-id=m242
| 20242 Sagot || || Robert Sagot, amateur astronomer ||
|-id=m243
| 20243 Den Bosch || || Den Bosch (s-Hertogenbosch) is the capital of the province of North Brabant in the Netherlands. ||
|-id=m246
| 20246 Frappa || || Éric Frappa, French amateur astronomer ||
|-id=m252
| 20252 Eyjafjallajökull || || Eyjafjallajökull, volcano in southern Iceland ||
|-id=m254
| 20254 Úpice || || Úpice is a small town in northeastern Bohemia ||
|-id=m256
| 20256 Adolfneckař || || Adolf Neckař, former director of the Ondřejov Observatory ||
|-id=m259
| 20259 Alanhoffman || || Alan Hoffman, American engineer, a pioneer in infrared detectors ||
|-id=m264
| 20264 Chauhan || || Neha Chauhan, an ISTS awardee in 2004 ||
|-id=m265
| 20265 Yuyinchen || || Yuyin Chen, an ISTS awardee in 2004 ||
|-id=m266
| 20266 Danielchoi || || Daniel Chimin Choi, an ISTS awardee in 2004 ||
|-id=m268
| 20268 Racollier || || Rachael Theresa Collier, an ISTS awardee in 2004 ||
|-id=m270
| 20270 Phildeutsch || || Phillip Thomas Deutsch, an ISTS awardee in 2004 ||
|-id=m271
| 20271 Allygoldberg || || Allyson Molly Goldberg, an ISTS awardee in 2004 ||
|-id=m272
| 20272 Duyha || || Duy Minh Ha, an ISTS awardee in 2004 ||
|-id=m274
| 20274 Halperin || || Bruce David Halperin, an ISTS and ISEF awardee in 2004 ||
|-id=m278
| 20278 Qileihang || || Qilei Hang, an ISTS awardee in 2004 ||
|-id=m279
| 20279 Harel || || Matan Harel, an ISTS awardee in 2004 ||
|-id=m281
| 20281 Kathartman || || Katherine Hartman, an ISTS awardee in 2004 ||
|-id=m282
| 20282 Hedberg || || Herbert Mason Hedberg, an ISTS awardee in 2004 ||
|-id=m283
| 20283 Elizaheller || || Elizabeth Rose Heller, an ISTS awardee in 2004 ||
|-id=m284
| 20284 Andreilevin || || Andrei Joseph Levin, an ISTS awardee in 2004 ||
|-id=m285
| 20285 Lubin || || Amos Benjamin Lubin, an ISTS awardee in 2004 ||
|-id=m286
| 20286 Michta || || Maria Lynn Michta, an ISTS awardee in 2004 ||
|-id=m287
| 20287 Munteanu || || Andrei Munteanu, an ISTS awardee in 2004, and US Naval Observatory SEAP intern ||
|-id=m288
| 20288 Nachbaur || || Moriah Katherine Nachbaur, an ISTS awardee in 2004 ||
|-id=m289
| 20289 Nettimi || || Divya Nettimi, an ISTS awardee in 2004 ||
|-id=m290
| 20290 Seanraj || || Sean Dilip Raj, an ISTS awardee in 2004 ||
|-id=m291
| 20291 Raumurthy || || Rohini Subhadra Rau-Murthy, an ISTS awardee in 2004. 23061 Blueglass was named after her mentor Michael Blueglass; he also in 2007 mentored Alexandria Ocasio-Cortez after whom 23238 Ocasio-Cortez was named ||
|-id=m292
| 20292 Eduardreznik || || Eduard Reznik, 2004 Intel Science Talent Search winner † ||
|-id=m293
| 20293 Sirichelson || || Silas Isaac Richelson, an ISTS awardee in 2004 ||
|-id=m296
| 20296 Shayestorm || || Shaye Perry Storm, an ISTS awardee in 2004 ||
|-id=m298
| 20298 Gordonsu || || Gordon L. Su, an ISTS awardee in 2004 ||
|-id=m300
| 20300 Arjunsuri || || Arjun Anand Suri, an ISTS awardee in 2004 ||
|}
20301–20400
|-
| 20301 Thakur || || Gaurav Subhash Thakur, an ISTS awardee in 2004 ||
|-id=m302
| 20302 Kevinwang || || Kevin Yibo Wang, an ISTS awardee in 2004 ||
|-id=m303
| 20303 Lindwestrick || || Linda Brown Westrick, an ISTS awardee in 2004 ||
|-id=m304
| 20304 Wolfson || || Jayne Frances Wolfson, an ISTS awardee in 2004 ||
|-id=m305
| 20305 Feliciayen || || Felicia Yuen-Lee Yen, an ISTS awardee in 2004 ||
|-id=m306
| 20306 Richarnold || || Richard Arnold, mentor at the ISTS in 2004 ||
|-id=m307
| 20307 Johnbarnes || || John Barnes, mentor at the ISTS in 2004 ||
|-id=m309
| 20309 Batalden || || John Batalden, mentor at the ISTS in 2004 ||
|-id=m311
| 20311 Nancycarter || || Nancy Carter, mentor at the ISTS in 2004 ||
|-id=m312
| 20312 Danahy || || Thomas Danahy, mentor at the ISTS in 2004 ||
|-id=m313
| 20313 Fredrikson || || Robert Fredrikson, mentor at the ISTS in 2004 ||
|-id=m314
| 20314 Johnharrison || || John Harrison, English clock designer ||
|-id=m316
| 20316 Jerahalpern || || Jerald Halpern, mentor at the ISTS in 2004 ||
|-id=m317
| 20317 Hendrickson || || Gary Hendrickson, mentor at the ISTS in 2004 ||
|-id=m321
| 20321 Lightdonovan || || Donna Light-Donovan, mentor at the ISTS in 2004 ||
|-id=m323
| 20323 Tomlindstom || || Tom Lindstom, mentor at the ISTS in 2004 ||
|-id=m324
| 20324 Johnmahoney || || John Mahoney, mentor at the ISTS in 2004 ||
|-id=m325
| 20325 Julianoey || || Julian Oey<!--#R-to-here--> (born 1964), a prolific asteroid photometrist, observing from Australia. He is the principal discoverer of four binary asteroids and co-discoverer of several others, using the photometry technique. He has written or co-authored a number of papers on binary and other asteroids. Name suggested by P. Pravec and A. Harris (Src). ||
|-id=m329
| 20329 Manfro || || Nina Manfro, mentor at the ISTS in 2004 ||
|-id=m330
| 20330 Manwell || || Anne Manwell, mentor at the ISTS in 2004 ||
|-id=m331
| 20331 Bijemarks || || Billie Jean Marks, mentor at the ISTS in 2004 ||
|-id=m333
| 20333 Johannhuth || || Johann Sigismund Huth, 18th–19th-century Ukrainian astronomer ||
|-id=m334
| 20334 Glewitsky || || Grigori Vasil'evich Lewitzky, 19th–20th-century Russian<!--- Ukrainian? ---> founder and first director of the Astronomical Observatory of Kharkov National University, later director of Tartu Observatoorium (Tartu Observatory) ||
|-id=m335
| 20335 Charmartell || || Charles Martell, mentor at the ISTS in 2004 ||
|-id=m336
| 20336 Gretamills || || Greta Mills, mentor at the ISTS in 2004 ||
|-id=m337
| 20337 Naeve || || Larry Naeve, mentor at the ISTS in 2004 ||
|-id=m338
| 20338 Elainepappas || || Elaine Pappas, mentor at the ISTS in 2004 ||
|-id=m339
| 20339 Eileenreed || || Eileen Reed, mentor at the ISTS in 2004 ||
|-id=m340
| 20340 Susanruder || || Susan Ruder, mentor at the ISTS in 2004 ||
|-id=m341
| 20341 Alanstack || || Alan Stack, mentor at the ISTS in 2004 ||
|-id=m342
| 20342 Trinh || || Jonathan Trinh, mentor at the ISTS in 2004 ||
|-id=m343
| 20343 Vaccariello || || Michael Vaccariello, mentor at the ISTS in 2004 ||
|-id=m345
| 20345 Davidvito || || David Vito, mentor at the ISTS in 2004 ||
|-id=m347
| 20347 Wunderlich || || Daniel Wunderlich, mentor at the ISTS in 2004 ||
|-id=m351
| 20351 Kaborchardt || || Kasey Lynn Borchardt, a DCYSC awardee in 2004 ||
|-id=m352
| 20352 Pinakibose || || Pinaki Bose, a DCYSC awardee in 2004 ||
|-id=m354
| 20354 Rebeccachan || || Rebecca Ann Chan, a DCYSC awardee in 2004 ||
|-id=m355
| 20355 Saraclark || || Sara Catherine Clark, a DCYSC awardee in 2004 ||
|-id=m357
| 20357 Shireendhir || || Shireen Dhir, a DCYSC awardee in 2004 ||
|-id=m358
| 20358 Dalem || || Henri Dalem, French historian, specialist in data processing, and webmaster of the international Holbach foundation ||
|-id=m360
| 20360 Holsapple || || Keith A. Holsapple, American professor of engineering at the University of Washington, who has developed scaling laws for asteroid cratering and explored the relationship between asteroidal shape, spin rates and internal strength ||
|-id=m361
| 20361 Romanishin || || William Romanishin, American professor of astronomy at the University of Oklahoma ||
|-id=m362
| 20362 Trilling || || David E. Trilling, American assistant astronomer at the University of Arizona ||
|-id=m363
| 20363 Komitov || || Boris Petrov Komitov, Bulgarian planetary scientist and popularizer ||
|-id=m364
| 20364 Zdeněkmiler || || Zdeněk Miler, Czech film-maker and illustrator, best known for the character Krtek ("Little Mole") † ||
|-id=m366
| 20366 Bonev || || Boncho P. Bonev, American research assistant professor at the Catholic University of America ||
|-id=m367
| 20367 Erikagibb || || Erika Gibb, American assistant professor in the Department of Physics and Astronomy of the University of Missouri ||
|-id=m371
| 20371 Ekladyous || || Nicholas Samir Ekladyous, a DCYSC awardee in 2004 ||
|-id=m372
| 20372 Juliafanning || || Julia Alexine Fanning, a DCYSC awardee in 2004 ||
|-id=m373
| 20373 Fullmer || || Austin Tracey Fullmer, a DCYSC awardee in 2004 ||
|-id=m375
| 20375 Sherrigerten || || Sherri Ann Gerten, a DCYSC awardee in 2004 ||
|-id=m376
| 20376 Joyhines || || Joy Ellen Hines, a DCYSC awardee in 2004 ||
|-id=m377
| 20377 Jakubisin || || Daniel James Jakubisin, a DCYSC awardee in 2004 ||
|-id=m379
| 20379 Christijohns || || Christine Elizabeth Johns, a DCYSC awardee in 2004 ||
|-id=m392
| 20392 Mikeshepard || || Michael Shepard, American geologist, specializing in radar and optical remote sensing of the minor and terrestrial planets ||
|-id=m393
| 20393 Kevinlane || || Kevin Nelson Lane, a DCYSC awardee in 2004 ||
|-id=m394
| 20394 Fatou || || Pierre Joseph Louis Fatou (1878–1929) was employed at the observatory of Paris ||
|-id=m399
| 20399 Michaelesser || 1998 OO || Michael Lesser, American scientist, specialist in high quantum efficiency CCDs ||
|}
20401–20500
|-id=m403
| 20403 Attenborough || || David Attenborough (born 1927), an English naturalist and broadcaster of wildlife documentaries ||
|-id=m405
| 20405 Barryburke || || Barry Burke, American CCD sensor designer ||
|-id=m415
| 20415 Amandalu || || Amanda Jane Lu, a DCYSC awardee in 2004 ||
|-id=m416
| 20416 Mansour || || Philip George Mansour, a DCYSC awardee in 2004 ||
|-id=m420
| 20420 Marashwhitman || || David I. Marash-Whitman, a DCYSC awardee in 2004 ||
|-id=m426
| 20426 Fridlund || || Malcolm Fridlund (born 1952) worked at ESA on projects such as Darwin and Corot. ||
|-id=m427
| 20427 Hjalmar || || Hjalmar Lagerkvist (b. 2021), a grandson of the discoverer. ||
|-id=m430
| 20430 Stout || || Earl Douglas Stout (c. 1895–1985), a music professor at Louisiana State University and a great-grandfather of the second discoverer. ||
|-id=m433
| 20433 Prestinenza || || Luigi Prestinenza (born 1929) is a very active, appreciated and popular Italian amateur astronomer. ||
|-id=m437
| 20437 Selohusa || || The South Euclid–Lyndhurst, Ohio, U.S.A. (SELOHUSA) region is in suburban Cleveland. Euclid bluestone quarries provided building stone for the development of northeast Ohio in the 19th century. NASA astronaut Carl E. Walz and Charles F. Brush, inventor of arc-lamp street lighting, are from the region. ||
|-id=m440
| 20440 McClintock || || Shannon Noel McClintock, a DCYSC awardee in 2004 ||
|-id=m441
| 20441 Elijahmena || || Elijah Login Mena, a DCYSC awardee in 2004 ||
|-id=m444
| 20444 Mamesser || || Mary Anne Messer, a DCYSC awardee in 2004 ||
|-id=m450
| 20450 Marymohammed || || Maryam Khadijah Mohammed, a DCYSC awardee in 2004 ||
|-id=m451
| 20451 Galeotti || || Piero Galeotti, Italian astrophysicist ||
|-id=m454
| 20454 Pedrajo || || Ana Cristina Pedrajo, a DCYSC awardee in 2004 ||
|-id=m455
| 20455 Pennell || || Jordan William Pennell, a DCYSC awardee in 2004 ||
|-id=m460
| 20460 Robwhiteley || || Robert J. Whiteley, American astronomer ||
|-id=m461
| 20461 Dioretsa || || "Asteroid" backwards, due to retrograde orbit (this is the first such numbered asteroid) ||
|-id=m465
| 20465 Vervack || || Ronald J. Vervack Jr., American planetary scientist of Johns Hopkins University Applied Physics Laboratory ||
|-id=m467
| 20467 Hibbitts || || Charles A. Hibbitts, American planetary scientist of Johns Hopkins University Applied Physics Laboratory ||
|-id=m468
| 20468 Petercook || || Peter Edward Cook, 20th-century British satirist, writer and comedian performer ||
|-id=m469
| 20469 Dudleymoore || || Dudley Moore, 20th-century British musician, actor and comedian ||
|-id=m472
| 20472 Mollypettit || || Molly Loren Pettit, a DCYSC awardee in 2004 ||
|-id=m474
| 20474 Reasoner || || Jonathan William Reasoner, a DCYSC awardee in 2004 ||
|-id=m476
| 20476 Chanarich || || Chana Leora Rich, a DCYSC awardee in 2004 ||
|-id=m477
| 20477 Anastroda || || Anastasia Nast Roda, a DCYSC awardee in 2004 ||
|-id=m478
| 20478 Rutenberg || || Michael Lev Rutenberg-Schoenberg, a DCYSC awardee in 2004 ||
|-id=m479
| 20479 Celisaucier || || Celine Michelle Saucier, a DCYSC awardee in 2004 ||
|-id=m480
| 20480 Antonschraut || || Anton H. Schraut, a DCYSC awardee in 2004 ||
|-id=m481
| 20481 Sharples || || David R. Sharples, a DCYSC awardee in 2004 ||
|-id=m482
| 20482 Dustinshea || || Dustin James Shea, a DCYSC awardee in 2004 ||
|-id=m483
| 20483 Sinay || || Daniella Sinay, a DCYSC awardee in 2004 ||
|-id=m484
| 20484 Janetsong || || Janet Song, a DCYSC awardee in 2004 ||
|-id=m488
| 20488 Pic-du-Midi || 1999 OL || Observatoire du Pic-du-Midi. ||
|-id=m491
| 20491 Ericstrege || || Eric William Strege, a DCYSC awardee in 2004 ||
|-id=m495
| 20495 Rimavská Sobota || || Rimavská Sobota, a small town with a rich history, lies in the Rimava river valley. ||
|-id=m496
| 20496 Jeník || || Jeník is the nickname of the main tenor character in Smetana's The Bartered Bride. ||
|-id=m497
| 20497 Mařenka || 1999 RS || Marenka is the nickname of the main soprano character in Smetana's The Bartered Bride. ||
|-id=m500
| 20500 Avner || || Lillian I. Avner (born 1952), Emergency Medicine Physician at Martin Memorial and medical director of Martin County Fire Rescue, dedicated her life to helping people. Lil's passion and leadership guided the ER and Fire Rescue from infancy to maturity. She contributed to thousands of lives saved through her decades of service. ||
|}
20501–20600
|-id=m503
| 20503 Adamtazi || || Adam Ryoma Tazi, a DCYSC awardee in 2004 ||
|-id=m512
| 20512 Rothenberg || || Eckehard Rothenberg (born 1938), a German amateur astronomer and technical director of the Archenhold Observatory † ‡ ||
|-id=m513
| 20513 Lazio || || Lazio is the Italian region containing Rome, the everlasting city. ||
|-id=m517
| 20517 Judycrystal || || Judy Crystal (Andrews) Robinson (born 1949) is married to the discoverer. ||
|-id=m518
| 20518 Rendtel || || Jürgen Rendtel (born 1954), a German solar physicist and amateur astronomer † ||
|-id=m522
| 20522 Yogeshwar || || Ranga Yogeshwar (de) (born 1959), a physicist and scientific journalist. ||
|-id=m524
| 20524 Bustersikes || || Leon R. Sikes III ("Buster", born 1959), is a Florida businessman and amateur astronomer. ||
|-id=m526
| 20526 Bathompson || || Blake Alexander Thompson, a DCYSC awardee in 2004 ||
|-id=m527
| 20527 Dajowestrich || || David John Westrich, a DCYSC awardee in 2004 ||
|-id=m528
| 20528 Kyleyawn || || Kyle James Yawn, a DCYSC awardee in 2004 ||
|-id=m529
| 20529 Zwerling || || Blake Gordon Zwerling, a DCYSC awardee in 2004 ||
|-id=m530
| 20530 Johnayres || || John Ayres, mentor at the DCYSC in 2004 ||
|-id=m531
| 20531 Stevebabcock || || Steven Babcock, mentor at the DCYSC in 2004 ||
|-id=m532
| 20532 Benbilby || || R. Ben Bilby, mentor at the DCYSC in 2004 ||
|-id=m533
| 20533 Irmabonham || || Irma Bonham, mentor at the DCYSC in 2004 ||
|-id=m534
| 20534 Bozeman || || Melissa Bozeman, mentor at the DCYSC in 2004 ||
|-id=m535
| 20535 Marshburrows || || Marsha Burrows, mentor at the DCYSC in 2004 ||
|-id=m536
| 20536 Tracicarter || || Traci A. Carter, mentor at the DCYSC in 2004 ||
|-id=m537
| 20537 Sandraderosa || || Sandra DeRosa, mentor at the DCYSC in 2004 ||
|-id=m539
| 20539 Gadberry || || Sandra Gadberry, mentor at the DCYSC in 2004 ||
|-id=m540
| 20540 Marhalpern || || Marcia Halpern, mentor at the DCYSC in 2004 ||
|-id=m544
| 20544 Kimhansell || || Kim Hansell, mentor at the DCYSC in 2004 ||
|-id=m545
| 20545 Karenhowell || || Karen Howell, mentor at the DCYSC in 2004 ||
|-id=m553
| 20553 Donaldhowk || || Donald Howk, mentor at the DCYSC in 2004 ||
|-id=m555
| 20555 Jennings || || Barbara Jennings, mentor at the DCYSC in 2004 ||
|-id=m556
| 20556 Midgekimble || || Midge Kimble, mentor at the DCYSC in 2004 ||
|-id=m557
| 20557 Davidkulka || || David Kulka, mentor at the DCYSC in 2004 ||
|-id=m559
| 20559 Sheridanlamp || || Sheridan Lamp, mentor at the DCYSC in 2004 ||
|-id=m564
| 20564 Michaellane || || Michael Lane, mentor at the DCYSC in 2004 ||
|-id=m566
| 20566 Laurielee || || Laurie Lee, mentor at the DCYSC in 2004 ||
|-id=m567
| 20567 McQuarrie || || Kerry Ann McQuarrie, mentor at the DCYSC in 2004 ||
|-id=m568
| 20568 Migaki || || Janet Migaki, mentor at the DCYSC in 2004 ||
|-id=m570
| 20570 Molchan || || Bonnie Molchan, mentor at the DCYSC in 2004 ||
|-id=m571
| 20571 Tiamorrison || || Tiana Morrison, mentor at the DCYSC in 2004 ||
|-id=m572
| 20572 Celemorrow || || Celeste Morrow, mentor at the DCYSC in 2004 ||
|-id=m573
| 20573 Garynadler || || Gary Nadler, mentor at the DCYSC in 2004 ||
|-id=m574
| 20574 Ochinero || || Marcia Collin Ochinero, mentor at the DCYSC in 2004 ||
|-id=m576
| 20576 Marieoertle || || Marie Oertle, mentor at the DCYSC in 2004 ||
|-id=m580
| 20580 Marilpeters || || Marilyn Peters, mentor at the DCYSC in 2004 ||
|-id=m581
| 20581 Prendergast || || Dana Prendergast, mentor at the DCYSC in 2004 ||
|-id=m582
| 20582 Reichenbach || || Edith Reichenbach, mentor at the DCYSC in 2004 ||
|-id=m583
| 20583 Richthammer || || James Richthammer, mentor at the DCYSC in 2004 ||
|-id=m584
| 20584 Brigidsavage || || Brigid Savage, mentor at the DCYSC in 2004 ||
|-id=m585
| 20585 Wentworth || || Sandra Wentworth, mentor at the DCYSC in 2004 ||
|-id=m586
| 20586 Elizkolod || || Elizabeth Kolod, an ISEF awardee in 2004 ||
|-id=m587
| 20587 Jargoldman || || Jarett Goldman, an ISEF awardee in 2004 ||
|-id=m589
| 20589 Hennyadmoni || || Henny Admoni, an ISEF awardee in 2004 ||
|-id=m590
| 20590 Bongiovanni || || Brice Bongiovanni, an ISEF awardee in 2004 ||
|-id=m591
| 20591 Sameergupta || || Sameer Gupta, an ISEF awardee in 2004 ||
|-id=m593
| 20593 Freilich || || Janet Freilich, an ISEF awardee in 2004 ||
|-id=m595
| 20595 Ryanwisnoski || || Ryan Wisnoski, an ISEF awardee in 2004 ||
|-id=m600
| 20600 Danieltse || || Daniel Tse, an ISEF awardee in 2004 ||
|}
20601–20700
|-id=m604
| 20604 Vrishikpatil || || Vrishikumar Patil, an ISEF awardee in 2004 ||
|-id=m606
| 20606 Widemann || || Thomas Widemann (born 1961), French planetary scientist at the Paris Observatory and associate professor at Versailles University ||
|-id=m607
| 20607 Vernazza || || Pierre Vernazza (born 1979), planetary scientist at the European Space Agency's European Space Research and Technology Centre in Noordwijk ||
|-id=m608
| 20608 Fredmerlin || || Frédéric Merlin (born 1981), French planetary scientist at the Observatoire de Paris ||
|-id=m610
| 20610 Franciswilliams || || Francis Williams (1690–1770), Jamaican astronomer, poet and polymath. ||
|-id=m613
| 20613 Chibaken || || Chiba prefecture is located east of Tokyo. ||
|-id=m616
| 20616 Zeeshansayed || || Zeeshan Sayed, an ISEF awardee in 2004 ||
|-id=m618
| 20618 Daniebutler || || Danielle Butler, an ISEF awardee in 2004 ||
|-id=m623
| 20623 Davidyoung || || David Young (born 1955), American amateur astronomer ||
|-id=m624
| 20624 Dariozanetti || || Dario Zanetti (born 1959), Swiss artisan, who helped build the discovering Gnosca Observatory ||
|-id=m625
| 20625 Noto || || The Noto Peninsula is located in Japan's geographical center, facing the Sea of Japan. ||
|-id=m631
| 20631 Stefuller || || Stephen Fuller, an ISEF awardee in 2004 ||
|-id=m632
| 20632 Carlyrosser || || Carly Rosser, an ISEF awardee in 2004 ||
|-id=m634
| 20634 Marichardson || || Matthew Richardson, an ISEF awardee in 2004 ||
|-id=m638
| 20638 Lingchen || || Ling Chen, an ISEF awardee in 2004 ||
|-id=m639
| 20639 Michellouie || || Michelle Louie, an ISEF awardee in 2004 ||
|-id=m641
| 20641 Yenuanchen || || Yen Uan-Chen, an ISEF awardee in 2004, and IFAA recipient † ||
|-id=m887
| 20887 Ngwaikin || || Ng Wai Kin (born 1974) is one of the pioneers in lunar and planetary imaging using webcam. ||
|-id=m888
| 20888 Siyueguo || || Si Yue Guo, an ISEF awardee in 2004, and MILSET Expo-Science Europe Award recipient † ||
|-id=m964
| 20964 Mons Naklethi || 1977 UA || First known name of Mount Kleť, in the Czech Republic, where the discovering Kleť Observatory is located ||
|-id=m965
| 20965 Kutafin || || Oleg Emel'yanovich Kutafin, Russian rector of the Moscow State Academy of Law ||
|-id=m969
| 20969 Samo || 1979 SH || Samo, French merchant and founder of the first Bohemian state † ‡ ||
|-id=m990
| 20990 Maryannehervey || || Mary Anne Hervey (1796-1838), wife of Fearon Fallows, an English astronomer at the Royal Observatory, Cape of Good Hope. ||
|-id=m991
| 20991 Jánkollár || || Ján Kollár, Slovak poet, priest and diligent promoter of Slavic culture † ||
|-id=m992
| 20992 Marypearse || || Mary Pearse (1802-1861), wife of Thomas Maclear. ||
|-id=m993
| 20993 Virginiediscry || || Marie-Virginie Discry (1812-1865), wife of Jean-Charles Houzeau. ||
|-id=m994
| 20994 Atreya || 1985 TS || Prakash Atreya (born 1985), a meteor astronomer and programming specialist at the Arecibo Observatory. ||
|-id=m996
| 20996 Pandrosion || 1986 PB || Pandrosion of Alexandria (fl. 4th century BC), mathematician who possibly developed an approximate method for doubling the cube. ||
|-id=m998
| 20998 Houzeaudelehaie || || Charles Auguste Benjamin Hippolyte Houzeau de Lehaie (1832-1922), younger brother of Jean-Charles Houzeau. ||
|-id=m000
| 21000 L'Encyclopédie || || The Encyclopédie or Dictionnaire raisonné des sciences, des arts et des métiers (1751–1772), by Diderot and d´Alembert, may be considered the principal work of the Age of Enlightenment. ||
|}