(21789) Frankwasser Main-belt Asteroid
Discovered on 29 September 1999 by LINEAR at Socorro.
Francis Wasser (b. 1988) was awarded first place in the 2005 Intel International Science and Engineering Fair for his physics team project. He attends the Synge Street CBS Secondary School, Dublin, Ireland.Naming citation (20050822/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Frankwasser is today
Seen from above the solar system on 2026-10-14: Frankwasser is 2.45 au from the Sun and 2.83 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21789 |
| Provisional designation | 1999 SH7 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.27 km (#14,559 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.379 |
| Absolute magnitude (H) | 14.41 |
| Orbital period | 3.46 years |
| Semi-major axis | 2.29 au |
| Perihelion – aphelion | 1.91 – 2.67 au |
| Eccentricity | 0.166 |
| Inclination | 6.39° |
| Closest distance between its orbit and Earth's (MOID) | 0.925 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Francis
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- (9830) Franciswasiak
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- (20610) Franciswilliams
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- (22567) Zenisek
- (52057) Clarkhowell
- (61402) Franciseveritt
- (92685) Cordellorenz
- (95802) Francismuir
- (124104) Balcony
All asteroids named after someone called Francis
Also discovered on 29 September 1999
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- (121332) Jasonhair
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