6980 Kyusakamoto
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| Discovery and designation | |
|---|---|
| Discovered by | K. Endate, K. Watanabe |
| Discovery date | September 16, 1993 |
| Designations | |
| Named after | Kyu Sakamoto |
| Alternative names | 1979 WH7; 1988 RU13; 1993 SV1 |
| Minor planet category | Main belt |
| Orbital characteristics | |
| Epoch December 31, 2006 (JD 2454100.5) | |
| Aphelion | 443.508 Gm (2.965 AU) |
| Perihelion | 404.348 Gm (2.703 AU) |
| Semi-major axis | 423.928 Gm (2.834 AU) |
| Eccentricity | 0.046 |
| Orbital period | 1742.400 d (4.77 a) |
| Average orbital speed | 17.68 km/s |
| Mean anomaly | 342.695° |
| Inclination | 3.293° |
| Longitude of ascending node | 97.517° |
| Argument of perihelion | 205.476° |
| Physical characteristics | |
| Dimensions | ? km |
| Mass | ?×10? kg |
| Mean density | ? g/cm³ |
| Equatorial surface gravity | ? m/s² |
| Equatorial escape velocity | ? km/s |
| Sidereal rotation period | ? d |
| Axial tilt | ?° |
| Pole ecliptic latitude | ? |
| Pole ecliptic longitude | ? |
| Geometric albedo | 0.10? |
| Temperature | ~165 K |
| Spectral type | ? |
| Absolute magnitude (H) | 12.2 |
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6980 Kyusakamoto is an asteroid discovered and named by the two Japanese astronomers Kin Endate and Kazuo Watanabe in 1993. Named in memory of the Japanese singer Kyu Sakamoto†, this planet also symbolizes the famous trio of which Kyu Sakamoto was a member, with songwriter Rokusuke Ei and pianist Hachidai Nakamura: in Japanese, Roku is 6, Kyu 9 and Hachi 8. Name proposed by the discoverers following a suggestion by T. Sato, A. Fujii and Y. Katagiri.
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