(21611) Rosoff Main-belt Asteroid
Discovered on 10 May 1999 by LINEAR at Socorro.
Matthew Scott Rosoff (b. 1988) was awarded second place in the 2006 Intel International Science and Engineering Fair for his engineering project. He attends the Bergen County Academies, Hackensack, New Jersey, U.S.A.Naming citation (20060711/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Rosoff is today
Seen from above the solar system on 2026-10-14: Rosoff is 2.17 au from the Sun and 1.30 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21611 |
| Provisional designation | 1999 JV50 |
| Orbit class | Main-belt Asteroid |
| Diameter | 4.36 km (#11,919 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.233 |
| Absolute magnitude (H) | 14.3 |
| Orbital period | 4.38 years |
| Semi-major axis | 2.68 au |
| Perihelion – aphelion | 2.15 – 3.20 au |
| Eccentricity | 0.197 |
| Inclination | 12.6° |
| Closest distance between its orbit and Earth's (MOID) | 1.17 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Matthew
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- (8998) Matthewizawa
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- (11743) Jachowski
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- (12983) Mattcox
- (12985) Mattgarrison
- (13750) Mattdawson
- (15030) Matthewkroll
- (16961) Mullahy
- (17281) Mattblythe
- (18755) Meduna
All asteroids named after someone called Matthew
Also discovered on 10 May 1999
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- (11225) Borden
- (11227) Ksenborisova
- (11228) Botnick
- (11229) Brookebowers
- (11230) Deschaffer
- (11231) Schiavo
- (11413) Catanach
- (11414) Allanchu
- (12117) Meagmessina
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- (16049) D'Amore