(4287) Trisov Main-belt Asteroid
Discovered on 7 September 1989 by A. Mrkos at Klet.
Where Trisov is today
Seen from above the solar system on 2026-10-14: Trisov is 2.54 au from the Sun and 2.56 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 4287 |
| Provisional designation | 1989 RU2 |
| Orbit class | Main-belt Asteroid |
| Diameter | 5.88 km (#9,117 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.269 |
| Rotation period | 5.49 hours |
| Spectral type | S |
| Absolute magnitude (H) | 13.53 |
| Orbital period | 3.28 years |
| Semi-major axis | 2.21 au |
| Perihelion – aphelion | 1.80 – 2.62 au |
| Eccentricity | 0.187 |
| Inclination | 5.48° |
| Closest distance between its orbit and Earth's (MOID) | 0.791 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.