(5219) Zemka Outer Main-belt Asteroid
Discovered on 2 April 1976 by N. S. Chernykh at Nauchnyj.
Named in honor of Aleksandr Grigorjevich Zemka (b. 1947), friend of the discoverer, electrotechnics engineer in Zaporozhje, both a prominent specialist and a good organizer who wins the respect of his colleagues and acquaintances. He provided valuable help to the discoverer in improving the 0.64-m telescope used for the Crimean NEA Survey.Naming citation (19980808/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Zemka is today
Seen from above the solar system on 2026-10-14: Zemka is 2.97 au from the Sun and 3.72 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 5219 |
| Provisional designation | 1976 GU3 |
| Orbit class | Outer Main-belt Asteroid |
| Diameter | 17.2 km (#2,632 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0490 |
| Absolute magnitude (H) | 12.75 |
| Orbital period | 5.74 years |
| Semi-major axis | 3.21 au |
| Perihelion – aphelion | 2.82 – 3.60 au |
| Eccentricity | 0.121 |
| Inclination | 2.02° |
| Closest distance between its orbit and Earth's (MOID) | 1.81 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Aleksandr
- (2112) Ulyanov
- (2208) Pushkin
- (4420) Alandreev
- (5014) Gorchakov
- (6075) Zajtsev
- (7269) Alprokhorov
- (7558) Yurlov
- (7910) Aleksola
- (7996) Vedernikov
- (8322) Kononovich
- (8339) Kosovichia
- (9514) Deineka
All asteroids named after someone called Aleksandr
Also discovered on 2 April 1976
More named asteroids discovered by N. S. Chernykh
- (1796) Riga
- (1836) Komarov
- (1907) Rudneva
- (1908) Pobeda
- (2004) Lexell
- (2006) Polonskaya
- (2036) Sheragul
- (2113) Ehrdni
- (2123) Vltava
- (2149) Schwambraniya
- (2164) Lyalya
- (2178) Kazakhstania
← (5218) Kutsak · (5220) Vika →