(21044) Rummel Main-belt Asteroid
Discovered on 16 September 1990 by H. E. Holt at Palomar.
John Rummel (b. 1952) is an American exobiologist who proposed the establishment of the COSPAR Planetary Protection Panel in 1998 and became its first Chair. He led the revision of existing requirements, internationalizing the field of planetary protection, and cemented COSPAR’s role as the internationally-accepted authority for all such matters.Naming citation (WGSBN Bull. 6, #13, 5), IAU / Minor Planet Center, via NASA/JPL
Where Rummel is today
Seen from above the solar system on 2026-10-14: Rummel is 2.11 au from the Sun and 2.04 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21044 |
| Provisional designation | 1990 SE1 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.81 km (#13,201 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.255 |
| Absolute magnitude (H) | 14.4 |
| Orbital period | 4.06 years |
| Semi-major axis | 2.55 au |
| Perihelion – aphelion | 2.10 – 2.99 au |
| Eccentricity | 0.176 |
| Inclination | 13.0° |
| Closest distance between its orbit and Earth's (MOID) | 1.11 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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All asteroids named after someone called John
Also discovered on 16 September 1990
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