6980 Kyusakamoto
| Discovery [1] | |
|---|---|
| Discovered by |
K. Endate K. Watanabe |
| Discovery site | Kitami Obs. |
| Discovery date | 16 September 1993 |
| Designations | |
| MPC designation | 6980 Kyusakamoto |
Named after |
Kyu Sakamoto (Japanese singer)[2] |
|
1993 SV1 · 1979 WH7 1988 RU13 | |
| main-belt · Koronis [3] | |
| Orbital characteristics [1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 36.38 yr (13,287 days) |
| Aphelion | 2.9646 AU |
| Perihelion | 2.7031 AU |
| 2.8338 AU | |
| Eccentricity | 0.0461 |
| 4.77 yr (1,742 days) | |
| 339.48° | |
| 0° 12m 23.76s / day | |
| Inclination | 3.2911° |
| 97.467° | |
| 211.53° | |
| Jupiter Tisserand parameter | 3.308 |
| Physical characteristics | |
| Dimensions |
8.791±0.081 km[4] 8.98 km (calculated)[3] |
|
3.2526±0.0042 h (R)[5] 3.2529±0.0042 h (S)[5] | |
|
0.24 (assumed)[3] 0.3013±0.0366[4] | |
| S [3] | |
|
12.2[4] 12.367±0.002 (R)[5] 12.4[1][3] 12.45±0.07[6] 12.966±0.003 (S)[5] | |
|
| |
6980 Kyusakamoto, provisional designation 1993 SV1, is a stony Koronis asteroid from the outer region of the asteroid belt, approximately 9 kilometers in diameter. It was discovered by Japanese astronomers Kin Endate and Kazuro Watanabe at Kitami Observatory on 16 September 1993.[7]
The S-type asteroid is a member of the Koronis family, which is named after 158 Koronis and consists of about 300 known bodies with nearly ecliptical orbits. It orbits the Sun at a distance of 2.7–3.0 AU once every 4 years and 9 months (1,742 days). Its orbit has an eccentricity of 0.05 and an inclination of 3° with respect to the ecliptic.[1] The first precovery was taken at Crimea-Nauchnij in 1979, extending the asteroid's observation arc by 14 years prior to its discovery.[7]
A rotational light-curve was obtained through photometric observations at the U.S. Palomar Transient Factory, California, in August 2012. The light-curve showed a period of 3.2529±0.0042 hours with a brightness amplitude of 0.40 in magnitude (U=2). In the Mould-R filter (R), a different photometric band, the observations rendered a nearly identical period of 3.2526±0.0042 hours with an amplitude of 0.41 (U=2).[5]
According to the survey carried out by the NEOWISE mission of NASA's space-based Wide-field Infrared Survey Explorer, the asteroid measures 8.8 kilometers in diameter and its surface has a high albedo of 0.30,[4] while the Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 and calculates a slightly larger diameter of 9.0 kilometers.[3]
The minor planet was named in memory of Japanese popular singer Kyu Sakamoto (1941–1985), who died in the crash of Japan Airlines Flight 123, the deadliest single-aircraft accident in history. Adored as "Kyu-chan", he is best known for his hit, I Look Up As I Walk ("Sukiyaki"), which became a worldwide bestseller. The naming also refers to his collaborators Rokusuke Ei and Hachidai Nakamura, songwriter and pianist, respectively.[2] Naming citation was published on 5 October 1998 (M.P.C. 32789).[8]
References
- 1 2 3 4 "JPL Small-Body Database Browser: 6980 Kyusakamoto (1993 SV1)" (2016-04-03 last obs.). Jet Propulsion Laboratory. Retrieved 19 May 2016.
- 1 2 Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (6980) Kyusakamoto. Springer Berlin Heidelberg. p. 569. ISBN 978-3-540-00238-3. Retrieved 16 April 2016.
- 1 2 3 4 5 6 "LCDB Data for (6980) Kyusakamoto". Asteroid Lightcurve Database (LCDB). Retrieved 19 May 2016.
- 1 2 3 4 Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results". The Astrophysical Journal. 741 (2): 25. arXiv:1109.6407
. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved 19 May 2016. - 1 2 3 4 5 Waszczak, Adam; Chang, Chan-Kao; Ofek, Eran O.; Laher, Russ; Masci, Frank; Levitan, David; et al. (September 2015). "Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry". The Astronomical Journal. 150 (3): 35. arXiv:1504.04041. Bibcode:2015AJ....150...75W. doi:10.1088/0004-6256/150/3/75. Retrieved 19 May 2016.
- ↑ Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus. 261: 34–47. arXiv:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 19 May 2016.
- 1 2 "6980 Kyusakamoto (1993 SV1)". Minor Planet Center. Retrieved 16 April 2016.
- ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 19 May 2016.
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
- 6980 Kyusakamoto at the JPL Small-Body Database
