1865 Cerberus

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For the moon of Pluto, see Kerberos (moon).
1865 Cerberus
1865Cerberus (Lightcurve Inversion).png
Light-curve-based 3-D model of 1865 Cerberus
Discovery [1]
Discovered by L. Kohoutek
Discovery site Bergedorf Obs.
Discovery date 26 October 1971
Designations
MPC designation 1865 Cerberus
Named after
Cerberus
(Greek mythology)[2]
1971 UA
Apollo, NEO
Orbital characteristics[1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc 39.81 yr (14539 days)
Aphelion 1.5844 AU (237.02 Gm)
Perihelion 0.57568 AU (86.121 Gm)
1.0800 AU (161.57 Gm)
Eccentricity 0.46697
1.12 yr (409.97 d)
38.341°
0° 52m 41.232s / day
Inclination 16.095°
212.93°
325.24°
Earth MOID 0.156199 AU (23.3670 Gm)
Jupiter MOID 3.41049 AU (510.202 Gm)
Jupiter Tisserand parameter 5.592
Physical characteristics
Dimensions 1.2 km
1.608 km[3]
1.611±0.013 km[4]
Mean radius
0.6 km
6.8039 h (0.28350 d) h[1]
6.800±0.006 h[5]
6.810±0.003 h[6]
6.87 h[7]
6.81 h[a]
6.804±0.003 h[8]
6.80328±0.00001 h[9]
6.803286±0.000005 h[10]
0.22
0.50±0.29[11]
0.1118[3]
0.136±0.021[4]
B–V = 0.790
U–B = 0.442
S (Tholen), S (SMASS)
S[12]
16.84

1865 Cerberus, provisional designation 1971 UA, is a stony asteroid, classified as a near-Earth object, about 1.6 kilometers in diameter. It was discovered on 26 October 1971, by Czech astronomer Luboš Kohoutek at the Hamburger Bergedorf Observatory in Germany and named in 1974.[13]

The S-type asteroid orbits the Sun at a distance of 0.6–1.6 AU once every 1.12 years (410 days). It has a rotation period of 6.804 hours and a geometric albedo of 0.220.

Cerberus is composed of 65% plagioclase and 35% pyroxene,[14] and passes within 30 gigametres (Gm) of the Earth 7 times from the year 1900 to the year 2100, each time at a distance of 24.4 Gm to 25.7 Gm. It also makes close approaches to Mars and Venus.

The asteroid is named after the figure from Greek mythology, Cerberus, a three-headed dog that guarded the entrance to Hades, the Underworld. His capture marked the last of the twelve labors of Hercules. It is also the name of an extinct constellation, Cerberus, now contained in the eastern part of Hercules.[2] It should not be confused with Kerberos, a moon of the dwarf planet Pluto.

References[edit]

  1. ^ a b c "JPL Small-Body Database Browser: 1865 Cerberus (1971 UA)" (2011-08-16 last obs.). Jet Propulsion Laboratory. Retrieved 20 April 2016. 
  2. ^ a b Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1865) Cerberus. Springer Berlin Heidelberg. pp. 149–150. ISBN 978-3-540-29925-7. Retrieved 6 November 2015. 
  3. ^ a b Pravec, Petr; Harris, Alan W.; Kusnirák, Peter; Galád, Adrián; Hornoch, Kamil (September 2012). "Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations". Icarus. 221 (1): 365–387. Bibcode:2012Icar..221..365P. doi:10.1016/j.icarus.2012.07.026. Retrieved 6 November 2015. 
  4. ^ a b 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:1109.6407Freely accessible. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved 6 November 2015. 
  5. ^ Harris, A. W.; Young, J. W. (October 1989). "Asteroid lightcurve observations from 1979-1981". Icarus: 314–364. Bibcode:1989Icar...81..314H. doi:10.1016/0019-1035(89)90056-0. ISSN 0019-1035. Retrieved 6 November 2015. 
  6. ^ Wisniewski, W. Z.; Michalowski, T. M.; Harris, A. W.; McMillan, R. S. (March 1995). "Photoelectric Observations of 125 Asteroids". Abstracts of the Lunar and Planetary Science Conference. Bibcode:1995LPI....26.1511W. Retrieved 6 November 2015. 
  7. ^ Sárneczky, K.; Szabó, Gy.; Kiss, L. L. (June 1999). "CCD observations of 11 faint asteroids". Astronomy and Astrophysics Supplement. Bibcode:1999A&AS..137..363S. doi:10.1051/aas:1999251. Retrieved 6 November 2015. 
  8. ^ Skiff, Brian A.; Bowell, Edward; Koehn, Bruce W.; Sanborn, Jason J.; McLelland, Kyle P.; Warner, Brian D. (July 2012). "Lowell Observatory Near-Earth Asteroid Photometric Survey (NEAPS) - 2008 May through 2008 December". The Minor Planet Bulletin. 39 (3): 111–130. Bibcode:2012MPBu...39..111S. ISSN 1052-8091. Retrieved 6 November 2015. 
  9. ^ Durech, J.; Vokrouhlický, D.; Baransky, A. R.; Breiter, S.; Burkhonov, O. A.; Cooney, W.; et al. (November 2012). "Analysis of the rotation period of asteroids (1865) Cerberus, (2100) Ra-Shalom, and (3103) Eger - search for the YORP effect". Astronomy & Astrophysics. 547: 9. arXiv:1210.2219Freely accessible. Bibcode:2012A&A...547A..10D. doi:10.1051/0004-6361/201219396. Retrieved 6 November 2015. 
  10. ^ Hanus, J.; Delbo', M.; Durech, J.; Alí-Lagoa, V. (August 2015). "Thermophysical modeling of asteroids from WISE thermal infrared data - Significance of the shape model and the pole orientation uncertainties". Icarus. 256: 101–116. arXiv:1504.04199Freely accessible. Bibcode:2015Icar..256..101H. doi:10.1016/j.icarus.2015.04.014. Retrieved 6 November 2015. 
  11. ^ Thomas, C. A.; Trilling, D. E.; Emery, J. P.; Mueller, M.; Hora, J. L.; Benner, L. A. M.; et al. (September 2011). "ExploreNEOs. V. Average Albedo by Taxonomic Complex in the Near-Earth Asteroid Population". The Astronomical Journal. 142 (3): 12. Bibcode:2011AJ....142...85T. doi:10.1088/0004-6256/142/3/85. Retrieved 6 November 2015. 
  12. ^ "LCDB Data for (1865) Cerberus". Asteroid Lightcurve Database (LCDB). Retrieved 6 November 2015. 
  13. ^ "1865 Cerberus (1971 UA)". Minor Planet Center. Retrieved 6 November 2015. 
  14. ^ L.A. Lebofsky; M.L. Nelson. "Compositions of Near-Earth Asteroids" (PDF). University of Arizona. Retrieved 6 November 2015. 

External links[edit]