(4000) Hipparchus Main-belt Asteroid
Discovered on 4 January 1989 by Ueda, S., Kaneda, H. at Kushiro.
Where Hipparchus is today
Seen from above the solar system on 2026-10-14: Hipparchus is 2.29 au from the Sun and 2.87 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 4000 |
| Provisional designation | 1989 AV |
| Orbit class | Main-belt Asteroid |
| Diameter | 17.5 km (#2,584 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0520 |
| Rotation period | 3.42 hours |
| Absolute magnitude (H) | 12.98 |
| Orbital period | 4.17 years |
| Semi-major axis | 2.59 au |
| Perihelion – aphelion | 2.29 – 2.89 au |
| Eccentricity | 0.116 |
| Inclination | 2.72° |
| Closest distance between its orbit and Earth's (MOID) | 1.30 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 4 January 1989
- (4179) Toutatis
- (4260) Yanai
- (4497) Taguchi
- (4499) Davidallen
- (4710) Wade
- (5176) Yoichi
- (5374) Hokutosei
- (6708) Bobbievaile
- (7120) Davidgavine
- (7645) Pons
- (9843) Braidwood