(33157) Pertile Main-belt Asteroid
Discovered on 24 February 1998 by P. Pravec at Ondrejov.
Czech amateur astronomer Tomáš Pertile (b. 1933) popularized astronomy in the former Ostrava Observatory in the second half of the 20th century, also as its supervisor during 1963-1972. He is now an active collaborator with the Johann Palisa Observatory and Planetarium in Ostrava-Poruba.Naming citation (20040504/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Pertile is today
Seen from above the solar system on 2026-10-14: Pertile is 2.39 au from the Sun and 1.65 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 33157 |
| Provisional designation | 1998 DF20 |
| Orbit class | Main-belt Asteroid |
| Diameter | 4.52 km (#11,581 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.261 |
| Rotation period | 15.5 hours |
| Absolute magnitude (H) | 14.17 |
| Orbital period | 4.35 years |
| Semi-major axis | 2.67 au |
| Perihelion – aphelion | 2.21 – 3.12 au |
| Eccentricity | 0.171 |
| Inclination | 13.1° |
| Closest distance between its orbit and Earth's (MOID) | 1.25 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 24 February 1998
More named asteroids discovered by P. Pravec
- (7204) Ondrejov
- (7490) Babicka
- (7492) Kacenka
- (9672) Rosenbergerezek
- (10221) Kubrick
- (10581) Jenikhollan
- (10633) Akimasa
- (11126) Dolecek
- (11167) Kunzak
- (11364) Karlstejn
- (11668) Balios
- (14517) Monitoma
← (33154) Talent · (33158) Rufus →