(4023) Jarnik Main-belt Asteroid
Discovered on 25 October 1981 by L. Brozek at Klet.
Where Jarnik is today
Seen from above the solar system on 2026-10-14: Jarnik is 2.44 au from the Sun and 3.44 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 4023 |
| Provisional designation | 1981 UN |
| Orbit class | Main-belt Asteroid |
| Diameter | 5.58 km (#9,599 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.195 |
| Rotation period | 4.78 hours |
| Absolute magnitude (H) | 13.58 |
| Orbital period | 3.34 years |
| Semi-major axis | 2.23 au |
| Perihelion – aphelion | 2.03 – 2.44 au |
| Eccentricity | 0.0933 |
| Inclination | 1.85° |
| Closest distance between its orbit and Earth's (MOID) | 1.02 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 25 October 1981
More named asteroids discovered by L. Brozek
- (2288) Karolinum
- (2613) Plzen
- (2622) Bolzano
- (2696) Magion
- (3102) Krok
- (3386) Klementinum
- (3419) Guth
- (3423) Slouka
- (3424) Nusl
- (3603) Gajdusek
- (3834) Zappafrank
- (4146) Rudolfinum
← (4022) Nonna · (4024) Ronan →