(4087) Part Main-belt Asteroid
Discovered on 5 March 1986 by E. Bowell at Anderson Mesa.
Where Part is today
Seen from above the solar system on 2026-10-14: Part is 2.24 au from the Sun and 1.94 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 4087 |
| Provisional designation | 1986 EM1 |
| Orbit class | Main-belt Asteroid |
| Diameter | 6.41 km (#8,377 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.206 |
| Rotation period | 16.5 hours |
| Absolute magnitude (H) | 13.56 |
| Orbital period | 3.21 years |
| Semi-major axis | 2.18 au |
| Perihelion – aphelion | 1.92 – 2.43 au |
| Eccentricity | 0.118 |
| Inclination | 4.42° |
| Closest distance between its orbit and Earth's (MOID) | 0.912 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 5 March 1986
- (3987) Wujek
- (4448) Phildavis
- (4821) Bianucci
- (5393) Goldstein
- (6373) Stern
- (7515) Marrucino
- (11022) Serio
- (13497) Ronstone