6500 Kodaira
| Discovery [1] | |
|---|---|
| Discovered by | K. Endate K. Watanabe |
| Discovery site | Kitami Observatory |
| Discovery date | 15 March 1993 |
| Designations | |
| MPC designation | 6500 Kodaira |
|
Named after
|
Keiichi Kodaira (astronomer)[2] |
| 1993 ET · 1970 GE1 1973 ST5 |
|
| Mars-crosser[1][3] | |
| Orbital characteristics [1] | |
| Epoch 27 June 2015 (JD 2457200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 45.61 yr (16,659 days) |
| Aphelion | 3.9032 AU |
| Perihelion | 1.6100 AU |
| 2.7566 AU | |
| Eccentricity | 0.4159 |
| 4.58 yr (1,672 days) | |
| 8.9988° | |
| Inclination | 29.311° |
| 186.12° | |
| 255.62° | |
| Earth MOID | 0.8242 AU |
| Physical characteristics | |
| Dimensions | 16.81 km (calculated)[3] |
| 5.400±0.001 h[4] 5.496±0.009 h[5] 5.3988±0.0002 h[6] 5.3983±0.0026 h[7] |
|
| 0.057 (assumed)[3] | |
| SMASS = B B [3] |
|
| 12.6[1] | |
6500 Kodaira, provisional designation 1993 ET, is a rare-type carbonaceous and eccentric asteroid, classified as a Mars-crosser. It measures about 17 kilometers in diameter. The asteroid was discovered on 15 March 1993, by Japanese amateur astronomers Kin Endate and Kazuro Watanabe at Kitami Observatory in eastern Hokkaidō, Japan.[8]
The dark and uncommon B-type asteroid, of which only a few dozen bodies are currently known,[9] orbits the Sun at a distance of 1.6–3.9 AU once every 4 years and 7 months (1,672 days). It shows an exceptionally high eccentricity of 0.42, as its orbit spans from within the orbit of Mars to the outer region of the asteroid belt. Its orbital plane is also heavily tilted by 29 degrees towards the ecliptic.[1] More recent photometric light-curve analysis rendered a well-define, concurring rotation period of 5.40 hours, refining preceding observations.[4][5][6][7] The Collaborative Asteroid Lightcurve Link (CALL) assumes a low albedo of 0.06 for the asteroid's surface.[3]
The minor planet was named in honor of Japanese astronomer and director of the National Astronomical Observatory of Japan, Keiichi Kodaira (b. 1937), who works mainly in stellar and galactic physics. He also served as president of IAU Commission 36 (Theory of Stellar Atmospheres) in the 1980s. As the scientific director of the Subaru Telescope project from its beginning, Kodaira played an essential role on its completion.[2]
References
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External links
- Asteroid Lightcurve Database (LCDB), query form (info)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (5001)-(10000) – Minor Planet Center
- 6500 Kodaira at the JPL Small-Body Database
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