(3130) Hillary Main-belt Asteroid
Discovered on 20 December 1981 by A. Mrkos at Klet.
👶 Hillary as a baby name🐶 Hillary as a dog name
Where Hillary is today
Seen from above the solar system on 2026-10-14: Hillary is 2.55 au from the Sun and 3.35 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 3130 |
| Provisional designation | 1981 YO |
| Orbit class | Main-belt Asteroid |
| Diameter | 13.1 km (#3,683 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0550 |
| Rotation period | 25.3 hours |
| Absolute magnitude (H) | 13.44 |
| Orbital period | 3.87 years |
| Semi-major axis | 2.46 au |
| Perihelion – aphelion | 1.97 – 2.96 au |
| Eccentricity | 0.200 |
| Inclination | 4.22° |
| Closest distance between its orbit and Earth's (MOID) | 0.968 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.