11949 Kagayayutaka
| Discovery [1] | |
|---|---|
| Discovered by | K. Endate, K. Watanabe |
| Discovery site | Kitami Observatory |
| Discovery date | 19 September 1993 |
| Designations | |
| MPC designation | 11949 Kagayayutaka |
Named after |
Kagaya Yutaka (artist)[2] |
| 1993 SD2 · 1998 QV62 | |
| main-belt · (outer) [3] | |
| Orbital characteristics [1] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 8195 days (22.44 yr) |
| Aphelion | 3.6341 AU (543.65 Gm) |
| Perihelion | 2.5443 AU (380.62 Gm) |
| 3.0892 AU (462.14 Gm) | |
| Eccentricity | 0.17638 |
| 5.43 yr (1983.2 d) | |
| 301.72° | |
| 0° 10m 53.472s / day | |
| Inclination | 7.6246° |
| 226.01° | |
| 249.33° | |
| Earth MOID | 1.57295 AU (235.310 Gm) |
| Jupiter MOID | 1.60262 AU (239.749 Gm) |
| Jupiter Tisserand parameter | 3.188 |
| Physical characteristics | |
| Dimensions | 24.30 km (caculated)[3] |
| 3.96±0.03 h[4] | |
| 0.057 (assumed)[3] | |
| C [3] | |
| 11.9[1] | |
|
| |
11949 Kagayayutaka, provisional designation 1993 SD2, is a carbonaceous asteroid from the outer region of the asteroid belt, about 24 kilometers in diameter. It was discovered on 19 September 1993, by Japanese amateur astronomers Kin Endate and Kazuro Watanabe at Kitami Observatory in eastern Hokkaidō, Japan.[5]
The C-type asteroid orbits the Sun at a distance of 2.5–3.6 AU once every 5 years and 5 months (1,984 days). Its orbit shows an eccentricity of 0.18 and is tilted by 8 degrees to the plane of the ecliptic.[1] Photometric light-curve observations gave it a provisional rotation period of 3.96±0.03 hours with a brightness amplitude of 0.23 in magnitude.[4] The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.057, which is a typical value for carbonaceous asteroids.[3]
The minor planet was named after Kagaya Yutaka (b. 1968), the Japanese space and digital artist and receiver of the Gold Medal in the American Digital Art Contest in 2000.[2]
References
- 1 2 3 4 "JPL Small-Body Database Browser: 11949 Kagayayutaka (1993 SD2)" (2015-12-12 last obs.). Jet Propulsion Laboratory. Retrieved 9 April 2016.
- 1 2 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (11949) Kagayayutaka. Springer Berlin Heidelberg. p. 66. ISBN 978-3-540-29925-7. Retrieved January 2016.
- 1 2 3 4 5 "LCDB Data for (11949) Kagayayutaka". Asteroid Lightcurve Database (LCDB). Retrieved January 2016.
- 1 2 Behrend, Raoul. "Asteroids and comets rotation curves – (11949) Kagayayutaka". Geneva Observatory. Retrieved January 2016.
- ↑ "11949 Kagayayutaka (1993 SD2)". Minor Planet Center. Retrieved January 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 (10001)-(15000) – Minor Planet Center
- 11949 Kagayayutaka at the JPL Small-Body Database
 Kagaya Yutaka |
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