3785 Kitami
| Discovery [1] | |
|---|---|
| Discovered by | T. Seki |
| Discovery site | Geisei Observatory |
| Discovery date | 30 November 1986 |
| Designations | |
| MPC designation | 3785 Kitami |
Named after |
Kitami (Japanese city)[2] |
|
1986 WM · 1934 TG 1957 UM · 1979 OO2 1980 UU | |
| main-belt (outer) · Themis [3] | |
| Orbital characteristics [1] | |
| Epoch 27 June 2015 (JD 2457200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 36.49 yr (13,329 days) |
| Aphelion | 3.7826 AU |
| Perihelion | 2.6839 AU |
| 3.2332 AU | |
| Eccentricity | 0.1699 |
| 5.81 yr (2,124 days) | |
| 7.7187° | |
| Inclination | 1.9226° |
| 151.03° | |
| 236.69° | |
| Physical characteristics | |
| Dimensions |
20.536±0.187 km[4] 17.86 km (calculated)[3] |
| 3.7992±0.0004 h[5] | |
|
0.0664±0.0133[4] 0.08 (assumed)[3] | |
| C [3] | |
| 12.2[1] | |
|
| |
3785 Kitami, provisional designation 1986 WM, is a carbonaceous asteroid from the outer region of the asteroid belt, about 20 kilometers in diameter. It was discovered by Japanese astronomer Tsutomu Seki at Geisei Observatory on 30 November 1986.[6]
The C-type asteroid is a member of the Themis family, a dynamical family of outer-belt asteroids with nearly coplanar ecliptical orbits. It orbits the Sun at a distance of 2.7–3.8 AU once every 5 years and 10 months (2,124 days). Its orbit shows an eccentricity of 0.17 and is tilted by 2 degrees to the plane of the ecliptic. It has a rotation period of 3.7992±0.0004 hours and a brightness amplitude of 0.30 in magnitude.[5]
Based on the survey carried out by NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, the asteroid has an albedo of 0.07 and measures 20.5 kilometers in diameter, while the Collaborative Asteroid Lightcurve Link (CALL) assumes an albedo of 0.08 and a diameter of 17.9 kilometers.[3][4]
Named for the city of Kitami on the island on Hokkaido, after which the minor planet 3720 Hokkaido is named. Kitami has been since 1983 a "friendship city" of the discoverer’s own city of Kochi, after which the minor planet 2396 Kochi is named. Several amateur astronomers there have been conducting an active program of astrometric observations of minor planets and comets.[2]
References
- 1 2 3 "JPL Small-Body Database Browser: 3785 Kitami (1986 WM)" (2015-12-20 last obs.). Jet Propulsion Laboratory. Retrieved January 2016.
- 1 2 Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (3785) Kitami. Springer Berlin Heidelberg. p. 320. ISBN 978-3-540-00238-3. Retrieved January 2016.
- 1 2 3 4 5 "LCDB Data for (3785) Kitami". Asteroid Lightcurve Database (LCDB). Retrieved January 2016.
- 1 2 3 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 January 2016.
- 1 2 Behrend, Raoul. "Asteroids and comets rotation curves – (3785) Kitami". Geneva Observatory. Retrieved January 2016.
- ↑ "3785 Kitami (1986 WM)". 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 (1)-(5000) – Minor Planet Center
- 3785 Kitami at the JPL Small-Body Database
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