2156 Kate

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 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc 98.49 yr (35,973 days)   
Aphelion 2.6934 AU
Perihelion 1.7919 AU
2.2427 AU
Eccentricity 0.2009
3.36 yr (1,227 days)
88.561°
0° 17m 36.24s / day
Inclination 5.3476°
17.186°
4.4129°
Physical characteristics
Dimensions 8.131±0.144 km[4]
8.61 km (calculated)[3]
5.6228±0.0003 h[lower-alpha 1]
5.62 h[5]
5.62215±0.00005 h[6]
5.623±0.005 h[7]
0.2242±0.0353[4]
0.20 (assumed)[3]
B–V = 0.916[1]
U–B = 0.525[1]
Tholen = S [1] · S [3]
12.69[1][3][4]
13.23±1.05[8]

    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 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]

    A large number photometric light-curve analysis gave it a well-defined rotation period between 5.620 and 5.623 hours with a brightness amplitude of 0.5 to 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 Wide-field Infrared Survey Explorer, the asteroid measures 8.1 km in diameter and its surface has an albedo of 0.22,[4] while the Collaborative Asteroid Lightcurve Link (CALL) assumes an albedo of 0.20 and calculates a slightly larger 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]

    References

    1. 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. 1 2 3 4 5 6 7 "JPL Small-Body Database Browser: 2156 Kate (A917 SH)" (2016-03-20 last obs.). Jet Propulsion Laboratory. Retrieved March 2016.
    2. 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 March 2016.
    3. 1 2 3 4 5 6 "LCDB Data for (2156) Kate". Asteroid Lightcurve Database (LCDB). Retrieved March 2016.
    4. 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 March 2016.
    5. 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 March 2016.
    6. 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 March 2016.
    7. 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 March 2016.
    8. ↑ 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 March 2016.
    9. ↑ "2156 Kate (A917 SH)". Minor Planet Center. Retrieved March 2016.

    External links


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