(243) Ida Main-belt Asteroid
Discovered on 29 September 1884 by J. Palisa at Vienna.
👶 Ida as a baby name🐶 Ida as a dog name
Where Ida is today
Seen from above the solar system on 2026-10-14: Ida is 2.84 au from the Sun and 3.63 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 243 |
| Provisional designation | A884 SB |
| Orbit class | Main-belt Asteroid |
| Diameter | 32.0 km (#1,276 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.262 |
| Rotation period | 4.63 hours |
| Spectral type | S |
| Absolute magnitude (H) | 10.06 |
| Orbital period | 4.85 years |
| Semi-major axis | 2.86 au |
| Perihelion – aphelion | 2.73 – 3.00 au |
| Eccentricity | 0.0461 |
| Inclination | 1.13° |
| Closest distance between its orbit and Earth's (MOID) | 1.75 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
More named asteroids discovered by J. Palisa
- (136) Austria
- (137) Meliboea
- (140) Siwa
- (142) Polana
- (143) Adria
- (151) Abundantia
- (153) Hilda
- (155) Scylla
- (156) Xanthippe
- (178) Belisana
- (182) Elsa
- (183) Istria
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