(175) Andromache Main-belt Asteroid
Discovered on 1 October 1877 by J. C. Watson at Ann Arbor.
Where Andromache is today
Seen from above the solar system on 2026-10-14: Andromache is 2.68 au from the Sun and 2.97 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 175 |
| Provisional designation | A877 TA |
| Orbit class | Main-belt Asteroid |
| Diameter | 94.5 km (#271 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0940 |
| Rotation period | 8.32 hours |
| Spectral type | C |
| Absolute magnitude (H) | 8.61 |
| Orbital period | 5.69 years |
| Semi-major axis | 3.19 au |
| Perihelion – aphelion | 2.45 – 3.93 au |
| Eccentricity | 0.231 |
| Inclination | 3.22° |
| Closest distance between its orbit and Earth's (MOID) | 1.44 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
More named asteroids discovered by J. C. Watson
- (79) Eurynome
- (93) Minerva
- (94) Aurora
- (100) Hekate
- (101) Helena
- (103) Hera
- (104) Klymene
- (105) Artemis
- (106) Dione
- (115) Thyra
- (119) Althaea
- (121) Hermione
← (174) Phaedra · (176) Iduna →