Global Information5481 Kiuchi information
| Discovery [1] | |
|---|---|
| Discovered by | K. Endate K. Watanabe |
| Discovery site | Kitami Obs. |
| Discovery date | 15 February 1990 |
| Designations | |
MPC designation | (5481) Kiuchi |
Named after | Tsuruhiko Kiuchi (Japanese amateur astronomer)[2] |
Alternative designations | 1990 CH · 1970 SR |
Minor planet category | main-belt · Vesta [3] |
| Orbital characteristics [1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 46.14 yr (16,851 days) |
| Aphelion | 2.4858 AU |
| Perihelion | 2.1936 AU |
Semi-major axis | 2.3397 AU |
| Eccentricity | 0.0624 |
Orbital period (sidereal) | 3.58 yr (1,307 days) |
Mean anomaly | 194.33° |
Mean motion | 0° 16m 31.44s / day |
| Inclination | 5.9569° |
Longitude of ascending node | 326.10° |
Argument of perihelion | 250.69° |
| Known satellites | 1 (Ds/Dp 0.33, P: 20.90 h)[4] |
| Physical characteristics | |
Mean diameter | 3.86 km (calculated)[5] |
Synodic rotation period | 3.6196±0.0002 h[4][6] |
Geometric albedo | 0.40 (assumed)[5] |
Spectral type | V [5][7] |
Absolute magnitude (H) | 12.98±0.1 (R)[4] · 13.4[1] · 13.676±0.062[5][8] · 13.73±0.29[7] |
5481 Kiuchi, provisional designation 1990 CH, is a bright binary[4] Vestian asteroid from the inner regions of the asteroid belt, approximately 4 kilometers (2.5 miles) in diameter. It was discovered on 15 February 1990, by Japanese astronomers Kin Endate and Kazuro Watanabe at Kitami Observatory in Hokkaidō, Japan, and named after their colleague Tsuruhiko Kiuchi.[2][9] The V-type asteroid has a rotation period of 3.6 hours.[5]
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