(21626) Matthewhall Main-belt Asteroid
Discovered on 12 July 1999 by LINEAR at Socorro.
Matthew J. Hall (b. 1987) was awarded first place in the 2005 Intel International Science and Engineering Fair for his mathematics team project. He attends the Bishop Feehan High School, Attleboro, Massachusetts, U.S.A.Naming citation (20050822/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Matthewhall is today
Seen from above the solar system on 2026-10-14: Matthewhall is 1.87 au from the Sun and 1.16 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21626 |
| Provisional designation | 1999 NP2 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.24 km (#14,617 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0850 |
| Absolute magnitude (H) | 15.09 |
| Orbital period | 3.38 years |
| Semi-major axis | 2.25 au |
| Perihelion – aphelion | 1.84 – 2.66 au |
| Eccentricity | 0.182 |
| Inclination | 5.24° |
| Closest distance between its orbit and Earth's (MOID) | 0.837 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Matthew
- (6626) Mattgenge
- (8998) Matthewizawa
- (10156) Darnley
- (11743) Jachowski
- (12207) Matthewbeasley
- (12983) Mattcox
- (12985) Mattgarrison
- (13750) Mattdawson
- (15030) Matthewkroll
- (16961) Mullahy
- (17281) Mattblythe
- (18755) Meduna
All asteroids named after someone called Matthew
Also discovered on 12 July 1999
- (12571) Occhiogrosso
- (20485) Leaferellec
- (20486) Lemos
- (21625) Seira
- (21646) Joshuaturner
- (21647) Carlturner
- (21648) Gravanschaik
More named asteroids discovered by LINEAR
- (7904) Morrow
- (8744) Cilla
- (8745) Delaney
- (8954) Baral
- (9126) Samcoulson
- (9243) Alag
- (9454) Ardeishar
- (9458) Beaumont
- (9459) Gracecai
- (9461) Cotingkeh
- (9463) Criscione
- (9465) Fergusonsam
← (21625) Seira · (21627) Sillis →