(103) Hera Main-belt Asteroid
Discovered on 7 September 1868 by J. C. Watson at Ann Arbor.
👶 Hera as a baby name🐶 Hera as a dog name🐱 Hera as a cat name
Where Hera is today
Seen from above the solar system on 2026-10-14: Hera is 2.83 au from the Sun and 3.82 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 103 |
| Provisional designation | A868 RA |
| Orbit class | Main-belt Asteroid |
| Diameter | 83.9 km (#343 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.217 |
| Rotation period | 23.7 hours |
| Spectral type | S |
| Absolute magnitude (H) | 7.74 |
| Orbital period | 4.44 years |
| Semi-major axis | 2.70 au |
| Perihelion – aphelion | 2.48 – 2.92 au |
| Eccentricity | 0.0816 |
| Inclination | 5.43° |
| Closest distance between its orbit and Earth's (MOID) | 1.47 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
- (104) Klymene
- (105) Artemis
- (106) Dione
- (115) Thyra
- (119) Althaea
- (121) Hermione
- (128) Nemesis
← (102) Miriam · (104) Klymene →