(28107) Sapar Main-belt Asteroid
Discovered on 22 September 1998 by L. Sarounova at Ondrejov.
Arved-Ervin Sapar (b. 1933) carried out pioneering studies of cosmology in Tartu, Estonia. He took into account the photon and neutrino background in cosmological equations. His contribution to modeling of stellar atmospheres has found acknowledgment among the astronomical community.Naming citation (WGSBN Bull. 3, #13, 11), IAU / Minor Planet Center, via NASA/JPL
Where Sapar is today
Seen from above the solar system on 2026-10-14: Sapar is 2.46 au from the Sun and 2.68 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 28107 |
| Provisional designation | 1998 SA13 |
| Orbit class | Main-belt Asteroid |
| Diameter | 4.51 km (#11,607 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.315 |
| Absolute magnitude (H) | 13.8 |
| Orbital period | 4.31 years |
| Semi-major axis | 2.65 au |
| Perihelion – aphelion | 2.43 – 2.86 au |
| Eccentricity | 0.0817 |
| Inclination | 14.5° |
| Closest distance between its orbit and Earth's (MOID) | 1.43 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 22 September 1998
- (12564) Ikeller
- (12908) Yagudina
- (13744) Rickline
- (14593) Everett
- (15017) Cuppy
- (22719) Nakadori
- (23882) Fredcourant
- (23890) Quindou
- (25139) Roatsch
- (25140) Schmedemann
- (29614) Sheller
- (52873) Grootaerd