(90) Antiope Main-belt Asteroid
Discovered on 1 October 1866 by R. Luther at Dusseldorf.
Where Antiope is today
Seen from above the solar system on 2026-10-14: Antiope is 3.26 au from the Sun and 4.26 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 90 |
| Provisional designation | A866 TA |
| Orbit class | Main-belt Asteroid |
| Diameter | 116 km (#175 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0580 |
| Rotation period | 16.5 hours |
| Spectral type | C |
| Absolute magnitude (H) | 8.42 |
| Orbital period | 5.57 years |
| Semi-major axis | 3.14 au |
| Perihelion – aphelion | 2.60 – 3.68 au |
| Eccentricity | 0.173 |
| Inclination | 2.21° |
| Closest distance between its orbit and Earth's (MOID) | 1.58 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
More named asteroids discovered by R. Luther
- (17) Thetis
- (26) Proserpina
- (28) Bellona
- (35) Leukothea
- (37) Fides
- (47) Aglaja
- (53) Kalypso
- (57) Mnemosyne
- (58) Concordia
- (68) Leto
- (71) Niobe
- (78) Diana
← (89) Julia · (91) Aegina →