(20033) Michaelnoble Main-belt Asteroid
Discovered on 8 August 1992 by E. W. Elst at Caussols.
Michael P. Noble (1954–2022) was a Canadian amateur astronomer known for high resolution, full-sky coverage of meteor, aurora, and noctilucent cloud (NLC) events. He often provided data to researchers, and proved it was possible to observe more than 40 NLC sightings in a season. He was also a generous supporter of public outreach with RASC Edmonton Centre.Naming citation (WGSBN Bull. 3, #15, 9), IAU / Minor Planet Center, via NASA/JPL
Where Michaelnoble is today
Seen from above the solar system on 2026-10-14: Michaelnoble is 2.05 au from the Sun and 1.08 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 20033 |
| Provisional designation | 1992 PR1 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.65 km (#13,570 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.118 |
| Absolute magnitude (H) | 14.88 |
| Orbital period | 3.75 years |
| Semi-major axis | 2.41 au |
| Perihelion – aphelion | 1.99 – 2.83 au |
| Eccentricity | 0.174 |
| Inclination | 11.2° |
| Closest distance between its orbit and Earth's (MOID) | 0.988 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Michael
- (3192) A'Hearn
- (4477) Kelley
- (4599) Rowan
- (5373) Michaelkurtz
- (5554) Keesey
- (5569) Colby
- (6406) Mikejura
- (6569) Ondaatje
- (7738) Heyman
- (7936) Mikemagee
- (8032) Michaeladams
- (8129) Michaelbusch
All asteroids named after someone called Michael
Also discovered on 8 August 1992
- (7296) Lamarck
- (8523) Bouillabaisse
- (8687) Caussols
- (8688) Delaunay
- (9059) Dumas
- (12320) Loschmidt
- (13088) Filipportera
- (20032) McNish
- (21104) Sveshnikov
- (22341) Francispoulenc
- (90732) Opdebeeck