List of geological features on Ida and Dactyl

This is a list of named geological features on asteroid 243 Ida and its moon, Dactyl.

Ida

Idaean regiones (geologically distinct areas) are named after the discoverer of the asteroid, and the places where he worked.

Regio	Coordinates	Diameter (km)	Approval Date	Named After	Ref
Palisa Regio	Template:Coord	23	1997	Johann Palisa	Template:WGPSN
Pola Regio	Template:Coord	8	1997	Pola, Croatia	Template:WGPSN
Vienna Regio	Template:Coord	13	1997	Vienna	Template:WGPSN

Dorsum	Coordinates	Diameter (km)	Approval Date	Named After	Ref
Townsend Dorsum	Template:Coord	40	1997	Tim E. Townsend, a member of the Galileo probe imaging team	Template:WGPSN

Idaean craters are named after famous caves.

Crater	Coordinates	Diameter (km)	Approval Date	Named After	Ref
Afon	Template:Coord	0.8	1994	Novy Afon Cave, Abkhazia	Template:WGPSN
Atea	Template:Coord	2	1997	Atea Cave, Papua New Guinea	Template:WGPSN
Azzurra	Template:Coord	9.6	1997	Azzurra Grotto, Italy	Template:WGPSN
Bilemot	Template:Coord	1.8	1997	Bilemot Cave, Korea	Template:WGPSN
Castellana	Template:Coord	5.2	1997	Castellana Cave, Italy	Template:WGPSN
Choukoutien	Template:Coord	1.1	1997	Choukoutien, China	Template:WGPSN
Fingal	Template:Coord	1.5	1997	Fingal's Cave, UK	Template:WGPSN
Kartchner	Template:Coord	0.9	1997	Kartchner Caverns, AZ, United States	Template:WGPSN
Kazumura	Template:Coord	2.1	1997	Kazumura Cave, HI, United States	Template:WGPSN
Lascaux	Template:Coord	11.8	1997	Lascaux Cave, France	Template:WGPSN
Lechuguilla	Template:Coord	1.5	1997	Lechuguilla Cave, NM, United States	Template:WGPSN
Mammoth	Template:Coord	10.2	1997	Mammoth Cave, KY, United States	Template:WGPSN
Manjang	Template:Coord	1	1997	Manjang Cave, Korea	Template:WGPSN
Orgnac	Template:Coord	10.6	1997	Orgnac Cave, France	Template:WGPSN
Padirac	Template:Coord	1.9	1997	Padirac Cave, France	Template:WGPSN
Peacock	Template:Coord	0.2	1997	Peacock Cave, FL, United States	Template:WGPSN
Postojna	Template:Coord	6	1997	Postojna Cave, Slovenia	Template:WGPSN
Sterkfontein	Template:Coord	4.7	1997	Sterkfontein, South Africa	Template:WGPSN
Stiffe	Template:Coord	1.5	1997	Stiffe Cave, Italy	Template:WGPSN
Undara	Template:Coord	8.5	1997	Undara Cave, Australia	Template:WGPSN
Viento	Template:Coord	1.6	1997	Viento Cave, Spain	Template:WGPSN

Dactylian craters are named after the mythological Dactyls.

Crater	Coordinates	Diameter (km)	Approval Date	Named After	Ref
Acmon	Template:Coord	0.3	1997	Acmon	Template:WGPSN
Celmis	Template:Coord	0.2	1997	Celmis	Template:WGPSN