(1640) Nemo Mars-crossing Asteroid
Discovered on 31 August 1951 by S. J. Arend at Uccle.
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Where Nemo is today
Seen from above the solar system on 2026-10-14: Nemo is 2.77 au from the Sun and 3.76 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 1640 |
| Provisional designation | 1951 QA |
| Orbit class | Mars-crossing Asteroid |
| Rotation period | 5.00 hours |
| Spectral type | S |
| Absolute magnitude (H) | 13.44 |
| Orbital period | 3.46 years |
| Semi-major axis | 2.29 au |
| Perihelion – aphelion | 1.50 – 3.07 au |
| Eccentricity | 0.343 |
| Inclination | 7.11° |
| Closest distance between its orbit and Earth's (MOID) | 0.495 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
More named asteroids discovered by S. J. Arend
- (1127) Mimi
- (1171) Rusthawelia
- (1262) Sniadeckia
- (1263) Varsavia
- (1281) Jeanne
- (1286) Banachiewicza
- (1287) Lorcia
- (1313) Berna
- (1314) Paula
- (1315) Bronislawa
- (1348) Michel
- (1352) Wawel
← (1639) Bower · (1641) Tana →