2156 Kate
|
Light-curve based 3D model of 2156 Kate | |
| Discovery [1] | |
|---|---|
| Discovered by | S. Belyavsky |
| Discovery site | Simeiz Obs. |
| Discovery date | 23 September 1917 |
| Designations | |
| MPC designation | 2156 Kate |
Named after |
Kate Kristensen (wife of naming astronomer)[2] |
|
A917 SH · 1937 PK 1954 UT2 · 1956 GP 1957 QK · 1969 BE 1970 LK · 1974 RL1 1976 GK1 · 1979 BC | |
| main-belt · (inner) [3] | |
| Orbital characteristics [1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 98.55 yr (35,995 days) |
| Aphelion | 2.6944 AU |
| Perihelion | 1.7926 AU |
| 2.2435 AU | |
| Eccentricity | 0.2010 |
| 3.36 yr (1,227 days) | |
| 147.07° | |
| 0° 17m 35.88s / day | |
| Inclination | 5.3483° |
| 17.181° | |
| 4.5459° | |
| Earth MOID | 0.7942 AU |
| Physical characteristics | |
| Dimensions |
8.131±0.144 km[4] 8.61 km (calculated)[3] |
|
5.62 h[5] 5.62215±0.00005 h[6] 5.6228±0.0003 h[lower-alpha 1] 5.623±0.005 h[7] | |
|
0.20 (assumed)[3] 0.2242±0.0353[4] | |
|
B–V = 0.916[1] U–B = 0.525[1] Tholen = S [1] A [8] · S [3] | |
|
12.69[1][3][4] 13.23±1.05[8] | |
|
| |
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2156 Kate, provisional designation A917 SH, is a stony asteroid from the inner regions of the asteroid belt, approximately 8 kilometers in diameter. It was discovered on 23 September 1917, by Soviet–Russian astronomer Sergey Belyavsky at Simeiz Observatory on the Crimean peninsula.[9]
The S-type asteroid is also classified as a rather rare and uncommon A-type by Pan-STARRS' large-scale survey.[8] It orbits the Sun at a distance of 1.8–2.7 AU once every 3 years and 4 months (1,227 days). Its orbit has an eccentricity of 0.20 and an inclination of 5° with respect to the ecliptic.[1] As no precoveries were taken, the asteroid's observation arc begins with its discovery in 1917.[9]
A large number of rotational light-curves were obtained from photometric observations. They gave a well-defined rotation period of 5.620 to 5.623 hours with a brightness variation between 0.5 and 0.9 in magnitude (U=3/3-).[lower-alpha 1][5][6][7]
According to the survey carried out by the NEOWISE mission of NASA's space-based Wide-field Infrared Survey Explorer, the asteroid measures 8.1 kilometers in diameter and its surface has an albedo of 0.22,[4] while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 8.6 kilometers.[3]
The minor planet was named after Kate Kristensen, wife of astronomer L. K. Kristensen, who was involved in the body's orbit computation.[2] Naming citation was published on 1 April 1980 (M.P.C. 5284).[10]
References
- 1 2 Dunckel (2011) web: rotation period 5.6228±0.0003 hours with a brightness amplitude of 0.84 mag. (U=3). Summary figures at Collaborative Asteroid Lightcurve Link (CALL) for (2156) Kate
- 1 2 3 4 5 6 7 "JPL Small-Body Database Browser: 2156 Kate (A917 SH)" (2016-04-11 last obs.). Jet Propulsion Laboratory. Retrieved 20 May 2016.
- 1 2 Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (2156) Kate. Springer Berlin Heidelberg. p. 175. ISBN 978-3-540-00238-3. Retrieved 1 March 2016.
- 1 2 3 4 5 6 "LCDB Data for (2156) Kate". Asteroid Lightcurve Database (LCDB). Retrieved 1 March 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 1 March 2016. - 1 2 Binzel, R. P.; Mulholland, J. D. (December 1983). "A photoelectric lightcurve survey of small main belt asteroids". Icarus: 519–533. Bibcode:1983Icar...56..519B. doi:10.1016/0019-1035(83)90170-7. ISSN 0019-1035. Retrieved 1 March 2016.
- 1 2 Hanus, J.; Durech, J.; Broz, M.; Warner, B. D.; Pilcher, F.; Stephens, R.; et al. (June 2011). "A study of asteroid pole-latitude distribution based on an extended set of shape models derived by the lightcurve inversion method". Astronomy and Astrophysics. 530: 16. arXiv:1104.4114. Bibcode:2011A&A...530A.134H. doi:10.1051/0004-6361/201116738. Retrieved 1 March 2016.
- 1 2 Kryszczynska, A.; Colas, F.; Polinska, M.; Hirsch, R.; Ivanova, V.; Apostolovska, G.; et al. (October 2012). "Do Slivan states exist in the Flora family?. I. Photometric survey of the Flora region". Astronomy and Astrophysics. 546: 51. Bibcode:2012A&A...546A..72K. doi:10.1051/0004-6361/201219199. Retrieved 1 March 2016.
- 1 2 3 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 1 March 2016.
- 1 2 "2156 Kate (A917 SH)". Minor Planet Center. Retrieved 1 March 2016.
- ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 20 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 (1)-(5000) – Minor Planet Center
- 2156 Kate at the JPL Small-Body Database
