(4233) Pal'chikov Main-belt Asteroid
Discovered on 11 September 1977 by N. S. Chernykh at Nauchnyj.
Named in memory of Nikolaj Borisovich Palʹchikov (1913–1937), a student in the astronomy department at Leningrad University. He wanted to specialize in celestial mechanics and was invited by M. Subbotin to pursue post-graduate studies. Along with other Leningrad astronomers, Nikolaj was killed during one of Stalin's purges.Naming citation (WGSBN Bull. 6, #10, 5), IAU / Minor Planet Center, via NASA/JPL
Where Pal'chikov is today
Seen from above the solar system on 2026-10-14: Pal'chikov is 2.71 au from the Sun and 2.33 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 4233 |
| Provisional designation | 1977 RO7 |
| Orbit class | Main-belt Asteroid |
| Rotation period | 7.09 hours |
| Absolute magnitude (H) | 13.85 |
| Orbital period | 3.72 years |
| Semi-major axis | 2.40 au |
| Perihelion – aphelion | 1.95 – 2.85 au |
| Eccentricity | 0.187 |
| Inclination | 3.83° |
| Closest distance between its orbit and Earth's (MOID) | 0.938 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Nikolaj
- (2233) Kuznetsov
- (2238) Steshenko
- (2342) Lebedev
- (3958) Komendantov
- (4067) Mikhel'son
- (4208) Kiselev
- (4654) Gor'kavyj
- (5075) Goryachev
- (5087) Emel'yanov
- (5158) Ogarev
- (6483) Nikolajvasil'ev
- (6575) Slavov
All asteroids named after someone called Nikolaj
Also discovered on 11 September 1977
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- (2458) Veniakaverin
- (3054) Strugatskia
- (3224) Irkutsk
- (3302) Schliemann
- (3787) Aivazovskij
- (3942) Churivannia
- (4619) Polyakhova
- (4654) Gor'kavyj
- (4813) Terebizh
- (4983) Schroeteria
- (5414) Sokolov