(3401) Vanphilos Mars-crossing Asteroid
Discovered on 1 August 1981 by Harvard Observatory at Harvard.
Where Vanphilos is today
Seen from above the solar system on 2026-10-14: Vanphilos is 2.57 au from the Sun and 3.53 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 3401 |
| Provisional designation | 1981 PA |
| Orbit class | Mars-crossing Asteroid |
| Diameter | 7.02 km (#7,614 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.307 |
| Rotation period | 4.23 hours |
| Spectral type | S |
| Absolute magnitude (H) | 12.36 |
| Orbital period | 3.65 years |
| Semi-major axis | 2.37 au |
| Perihelion – aphelion | 1.52 – 3.22 au |
| Eccentricity | 0.358 |
| Inclination | 21.8° |
| Closest distance between its orbit and Earth's (MOID) | 0.665 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
More named asteroids discovered by Harvard Observatory
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- (2153) Akiyama
- (2198) Ceplecha
- (2221) Chilton
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