6500 Kodaira
6500 Kodaira, provisional designation 1993 ET, is a highly eccentric, rare-type asteroid and sizable Mars-crosser from the central regions of the asteroid belt, approximately 10 kilometers in diameter. It was discovered on 15 March 1993, by Japanese amateur astronomers Kin Endate and Kazuro Watanabe at Kitami Observatory in eastern Hokkaidō, Japan. It was named for Japanese astronomer Keiichi Kodaira.
| Discovery | |
|---|---|
| Discovered by | K. Endate K. Watanabe |
| Discovery site | Kitami Obs. |
| Discovery date | 15 March 1993 |
| Designations | |
MPC designation | (6500) Kodaira |
Named after | Keiichi Kodaira (Japanese astronomer) |
Alternative designations | 1993 ET · 1970 GE1 1973 ST5 |
Minor planet category | Mars-crosser |
| Orbital characteristics | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 47.15 yr (17,222 days) |
| Aphelion | 3.9033 AU |
| Perihelion | 1.6061 AU |
Semi-major axis | 2.7547 AU |
| Eccentricity | 0.4170 |
Orbital period (sidereal) | 4.57 yr (1,670 days) |
Mean anomaly | 181.45° |
Mean motion | 0° 12m 56.16s / day |
| Inclination | 29.321° |
Longitude of ascending node | 186.12° |
| 255.49° | |
| Physical characteristics | |
| Dimensions | 9.487±2.081 16.81 km (calculated) |
Synodic rotation period | 5.3983±0.0026 h 5.3988±0.0002 h 5.400±0.001 h 5.496±0.009 h |
| 0.057 (assumed) 0.151±0.110 | |
| SMASS = B · B | |
| 12.39±0.21 · 12.6 · 12.640±0.007 (R) | |
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