(69) Hesperia Main-belt Asteroid
Discovered on 29 April 1861 by G. Schiaparelli at Milan.
Where Hesperia is today
Seen from above the solar system on 2026-10-14: Hesperia is 3.18 au from the Sun and 4.04 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 69 |
| Provisional designation | A861 HC |
| Orbit class | Main-belt Asteroid |
| Diameter | 138 km (#107 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.140 |
| Rotation period | 5.66 hours |
| Spectral type | M |
| Absolute magnitude (H) | 7.21 |
| Orbital period | 5.14 years |
| Semi-major axis | 2.98 au |
| Perihelion – aphelion | 2.47 – 3.48 au |
| Eccentricity | 0.169 |
| Inclination | 8.59° |
| Closest distance between its orbit and Earth's (MOID) | 1.51 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 29 April 1861
← (68) Leto · (70) Panopaea →