(119) Althaea Main-belt Asteroid
Discovered on 3 April 1872 by J. C. Watson at Ann Arbor.
Where Althaea is today
Seen from above the solar system on 2026-10-14: Althaea is 2.56 au from the Sun and 2.84 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 119 |
| Provisional designation | A872 GA |
| Orbit class | Main-belt Asteroid |
| Diameter | 57.3 km (#633 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.231 |
| Rotation period | 11.5 hours |
| Spectral type | S |
| Absolute magnitude (H) | 8.33 |
| Orbital period | 4.15 years |
| Semi-major axis | 2.58 au |
| Perihelion – aphelion | 2.37 – 2.79 au |
| Eccentricity | 0.0817 |
| Inclination | 5.79° |
| Closest distance between its orbit and Earth's (MOID) | 1.37 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
- (121) Hermione
- (128) Nemesis
← (118) Peitho · (120) Lachesis →