(2021) Poincare Main-belt Asteroid
Discovered on 26 June 1936 by L. Boyer at Algiers.
Where Poincare is today
Seen from above the solar system on 2026-10-14: Poincare is 2.68 au from the Sun and 3.60 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 2021 |
| Provisional designation | 1936 MA |
| Orbit class | Main-belt Asteroid |
| Diameter | 5.04 km (#10,527 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.365 |
| Rotation period | 4.41 hours |
| Absolute magnitude (H) | 13.62 |
| Orbital period | 3.51 years |
| Semi-major axis | 2.31 au |
| Perihelion – aphelion | 1.80 – 2.82 au |
| Eccentricity | 0.219 |
| Inclination | 5.50° |
| Closest distance between its orbit and Earth's (MOID) | 0.790 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
More named asteroids discovered by L. Boyer
- (1177) Gonnessia
- (1211) Bressole
- (1212) Francette
- (1295) Deflotte
- (1296) Andree
- (1301) Yvonne
- (1338) Duponta
- (1339) Desagneauxa
- (1340) Yvette
- (1343) Nicole
- (1344) Caubeta
- (1364) Safara
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