(21234) Nakashima Main-belt Asteroid
Discovered on 16 November 1995 by T. Kobayashi at Oizumi.
Takashi Nakashima (b. 1956) is an amateur astronomer in Kumamoto prefecture. As a member of Kumamoto Civil Astronomical Observatory, he plays an active role in the popularization of astronomy amongst the public.Naming citation (20020427/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Nakashima is today
Seen from above the solar system on 2026-10-14: Nakashima is 2.55 au from the Sun and 2.46 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21234 |
| Provisional designation | 1995 WG |
| Orbit class | Main-belt Asteroid |
| Diameter | 4.07 km (#12,580 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.323 |
| Absolute magnitude (H) | 14.15 |
| Orbital period | 4.36 years |
| Semi-major axis | 2.67 au |
| Perihelion – aphelion | 2.17 – 3.17 au |
| Eccentricity | 0.188 |
| Inclination | 14.1° |
| Closest distance between its orbit and Earth's (MOID) | 1.21 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Takashi
- (5230) Asahina
- (6392) Takashimizuno
- (6527) Takashiito
- (6792) Akiyamatakashi
- (7263) Takayamada
- (8159) Fukuoka
- (8314) Tsuji
- (8369) Miyata
- (8733) Ohsugi
- (8930) Kubota
- (11579) Tsujitsuka
- (13224) Takamatsuda
All asteroids named after someone called Takashi
Also discovered on 16 November 1995
- (6804) Maruseppu
- (8720) Takamizawa
- (8905) Bankakuko
- (9093) Sorada
- (9094) Butsuen
- (9217) Kitagawa
- (11111) Repunit
- (12796) Kamenrider
- (73819) Isaootuki
- (136743) Echigo
More named asteroids discovered by T. Kobayashi
- (4807) Noboru
- (5924) Teruo
- (6275) Kiryu
- (6276) Kurohone
- (6346) Syukumeguri
- (6414) Mizunuma
- (6418) Hanamigahara
- (6420) Riheijyaya
- (6422) Akagi
- (6423) Harunasan
- (6462) Myougi
- (6531) Subashiri
← (21229) Susil · (21236) Moneta →