(12421) Zhenya Main-belt Asteroid
Discovered on 16 October 1995 by at Zelenchukskaya Stn 42673 Kryachko, T. V..
Eugenia Krysina (b. 1952), a chemist who lives in Moscow, is a friend of the discoverer and displays a keen interest in astronomy, especially in minor planets. Zhenya is the diminutive form of Eugenia.Naming citation (20010509/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Zhenya is today
Seen from above the solar system on 2026-10-14: Zhenya is 2.38 au from the Sun and 1.68 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 12421 |
| Provisional designation | 1995 UH5 |
| Orbit class | Main-belt Asteroid |
| Diameter | 7.96 km (#6,617 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0710 |
| Rotation period | 7.71 hours |
| Absolute magnitude (H) | 14.31 |
| Orbital period | 3.83 years |
| Semi-major axis | 2.45 au |
| Perihelion – aphelion | 2.15 – 2.75 au |
| Eccentricity | 0.122 |
| Inclination | 5.56° |
| Closest distance between its orbit and Earth's (MOID) | 1.15 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Eugenia
All asteroids named after someone called Eugenia