This is a list of named geological features on asteroid 243 Ida and its moon, Dactyl.
Ida
===Craters=== <!-- "List of craters on Ida" redirects here -->
Idaean craters are named after famous caves.
{| class="wikitable" style="min-width: 90%;"
|-
! style="width:10em" | Crater !! style="width:10em" | Coordinates !! Diameter (km) !! Approval Date !! Named After || Ref
|-
| Afon || || 0.8 || 1994 || Novy Afon Cave, Abkhazia ||
|-
| Atea || || 2 || 1997 || Atea Cave, Papua New Guinea ||
|-
| Azzurra || || 9.6 || 1997 || Azzurra Grotto, Italy ||
|-
| Bilemot || || 1.8 || 1997 || Bilemot Cave, Korea ||
|-
| Castellana || || 5.2 || 1997 || Castellana Cave, Italy ||
|-
| Choukoutien || || 1.1 || 1997 || Choukoutien, China ||
|-
| Fingal || || 1.5 || 1997 || Fingal's Cave, UK ||
|-
| Kartchner || || 0.9 || 1997 || Kartchner Caverns, AZ, United States ||
|-
| Kazumura || || 2.1 || 1997 || Kazumura Cave, HI, United States ||
|-
| Lascaux || || 11.8 || 1997 || Lascaux Cave, France ||
|-
| Lechuguilla || || 1.5 || 1997 || Lechuguilla Cave, NM, United States ||
|-
| Mammoth || || 10.2 || 1997 || Mammoth Cave, KY, United States ||
|-
| Manjang || || 1 || 1997 || Manjang Cave, Korea ||
|-
| Orgnac || || 10.6 || 1997 || Orgnac Cave, France ||
|-
| Padirac || || 1.9 || 1997|| Padirac Cave, France ||
|-
| Peacock || || 0.2 || 1997 || Peacock Cave, FL, United States ||
|-
| Postojna || || 6 || 1997 || Postojna Cave, Slovenia ||
|-
| Sterkfontein || || 4.7 || 1997 || Sterkfontein, South Africa ||
|-
| Stiffe || || 1.5 || 1997 || Stiffe Cave, Italy ||
|-
| Undara || || 8.5 || 1997 || Undara Cave, Australia ||
|-
| Viento || || 1.6 || 1997 || Viento Cave, Spain ||
|}
Dorsa
{| class="wikitable" style="min-width: 90%;"
|-
! style="width:10em" | Dorsum !! style="width:10em" | Coordinates !! Diameter (km) !! Approval Date !! Named After || Ref
|-
| Townsend Dorsum || || 40 || 1997 || Tim E. Townsend, a member of the Galileo probe imaging team ||
|-
|}
Regiones
Idaean regiones (geologically distinct areas) are named after the discoverer of the asteroid, and the places where he worked.
{| class="wikitable" style="min-width: 90%;"
|-
! style="width:10em" | Regio !! style="width:10em" | Coordinates !! Diameter (km) !! Approval Date !! Named After || Ref
|-
| Palisa Regio|| || 23 || 1997 || Johann Palisa ||
|-
| Pola Regio || || 8 || 1997 || Pola, Croatia ||
|-
| Vienna Regio || || 13 || 1997 || Vienna ||
|}
== Dactyl == <!-- "List of craters on Dactyl" redirects here -->
Dactylian craters are named after the mythological Dactyls.
{| class="wikitable" style="min-width: 90%;"
|-
! style="width:10em" | Crater !! style="width:10em" | Coordinates !! Diameter (km) !! Approval Date !! Named After || Ref
|-
| Acmon || || 0.3 || 1997 || Acmon ||
|-
| Celmis || || 0.2 || 1997 || Celmis ||
|}
External links
- USGS: Ida nomenclature
- USGS: Dactyl nomenclature