Astronomy:156 Xanthippe

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Short description: Main-belt asteroid
156 Xanthippe
Discovery[1]
Discovered byJ. Palisa
Discovery siteAustrian Naval Obs.
Discovery date22 November 1875
Designations
(156) Xanthippe[2]
Pronunciation/zænˈθɪpiː/[6]
Named afterXanthippe
(wife of Socrates)[3]
A875 WA; 1901 SA;
1902 VA; 1936 FG1;
1942 RP; 1949 BN
Minor planet categorymain-belt[1][4] · (middle)
background[5]
Orbital characteristics[4]
Epoch 23 March 2018 (JD 2458200.5)
Uncertainty parameter 0
Observation arc116.46 yr (42,537 d)
|{{{apsis}}}|helion}}3.3475 AU
|{{{apsis}}}|helion}}2.1069 AU
2.7272 AU
Eccentricity0.2274
Orbital period4.50 yr (1,645 d)
Mean anomaly34.237°
Mean motion0° 13m 7.68s / day
Inclination9.7818°
Longitude of ascending node241.83°
338.29°
Physical characteristics
Mean diameter110.409 km[7][8]
110.718±2.187 km[9]
115.49±1.74 km[10]
116.34±4.14 km[11]
120.99±2.5 km[12]
121.68±41.10 km[13]
122.02±31.66 km[14]
143.346±0.903 km[15]
143.35±0.90 km[15]
Mass(6.49±3.71)×1018 kg[11]
Mean density7.86±4.57 g/cm3[11]
Rotation period22 h[16]
22.104±0.006 h[16]
22.37±0.01 h[17]
22.5 h[18]
Geometric albedo0.030±0.004[15]
0.03±0.03[14]
0.04±0.03[13]
0.0422±0.002[12]
0.047±0.002[10]
0.0504±0.0120[9]
0.0687[7]
Tholen = C[4]
SMASS = Ch[4][8]
B–V = 0.713[4]
U–B = 0.315[4]
Absolute magnitude (H)8.31[8]
8.31±0.09[7][17]
8.64[4][9][10][12][14][15]
8.65[13]
8.83±0.30[19]


Xanthippe (minor planet designation: 156 Xanthippe) is a dark background asteroid from the central regions of the asteroid belt, approximately 120 kilometers (75 miles) in diameter. It was discovered on 22 November 1875, by Austrian astronomer Johann Palisa at the Austrian Naval Observatory, in what is now Croatia.[1] It is named after Xanthippe, the wife of the Greek philosopher Socrates.[3]

Orbit and classification

Xanthippe is a non-family asteroid from the main belt's background population.[5] It orbits the Sun in the central main-belt at a distance of 2.1–3.3 AU once every 4 years and 6 months (1,645 days; semi-major axis of 2.73 AU). Its orbit has an eccentricity of 0.23 and an inclination of 10° with respect to the ecliptic.[4]

Physical characteristics

Photometric observations of this asteroid at the European Southern Observatory in La Silla, Chile during 1981 gave a light curve with a period of 22.5 hours.[18] Based upon its spectrum this is classified as a hydrated C-type asteroid (Ch-subtype) in the SMASS classification, indicating that it likely has a carbonaceous composition.[4][5]

Diameter and albedo

According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Xanthippe measures between 110.409 and 143.35 kilometers in diameter and its surface has an albedo between 0.030 and 0.0687.[7][9][10][12][13][14][15]

Naming

This minor planet was named for Xanthippe, the wife of the Greek philosopher Socrates (c. 470–399 BC), after whom asteroid 5450 Sokrates was named. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 20).[3]

References

  1. ↑ 1.0 1.1 1.2 "156 Xanthippe". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=156. Retrieved 29 May 2018. 
  2. ↑ Xantippe (3rd ed.), Oxford University Press, September 2005, http://oed.com/search?searchType=dictionary&q=Xantippe  (Subscription or UK public library membership required.)
  3. ↑ 3.0 3.1 3.2 Schmadel, Lutz D. (2007). "(156) Xanthippe". Dictionary of Minor Planet Names – (156) Xanthippe. Springer Berlin Heidelberg. p. 29. doi:10.1007/978-3-540-29925-7_157. ISBN 978-3-540-00238-3. 
  4. ↑ 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 "JPL Small-Body Database Browser: 156 Xanthippe". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2000156. Retrieved 29 May 2018. 
  5. ↑ 5.0 5.1 5.2 "Asteroid 156 Xanthippe". Small Bodies Data Ferret. https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=156+Xanthippe. Retrieved 29 May 2018. 
  6. ↑ Benjamin Smith (1903) The Century Dictionary and Cyclopedia
  7. ↑ 7.0 7.1 7.2 7.3 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. doi:10.1016/j.icarus.2012.07.026. Bibcode: 2012Icar..221..365P. 
  8. ↑ 8.0 8.1 8.2 "LCDB Data for (156) Xanthippe". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=156%7CXanthippe. Retrieved 29 May 2018. 
  9. ↑ 9.0 9.1 9.2 9.3 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. doi:10.1088/0004-637X/741/2/90. Bibcode: 2011ApJ...741...90M.  (catalog)
  10. ↑ 10.0 10.1 10.2 10.3 Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan 63 (5): 1117–1138. doi:10.1093/pasj/63.5.1117. Bibcode: 2011PASJ...63.1117U.  (online, AcuA catalog p. 153)
  11. ↑ 11.0 11.1 11.2 Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science 73 (1): 98–118, doi:10.1016/j.pss.2012.03.009, Bibcode: 2012P&SS...73...98C  See Table 1.
  12. ↑ 12.0 12.1 12.2 12.3 Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System 12: IRAS-A-FPA-3-RDR-IMPS-V6.0. Bibcode: 2004PDSS...12.....T. https://sbnarchive.psi.edu/pds3/iras/IRAS_A_FPA_3_RDR_IMPS_V6_0/data/diamalb.tab. Retrieved 22 October 2019. 
  13. ↑ 13.0 13.1 13.2 13.3 Nugent, C. R.; Mainzer, A.; Bauer, J.; Cutri, R. M.; Kramer, E. A.; Grav, T. et al. (September 2016). "NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos". The Astronomical Journal 152 (3): 12. doi:10.3847/0004-6256/152/3/63. Bibcode: 2016AJ....152...63N. 
  14. ↑ 14.0 14.1 14.2 14.3 Nugent, C. R.; Mainzer, A.; Masiero, J.; Bauer, J.; Cutri, R. M.; Grav, T. et al. (December 2015). "NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos". The Astrophysical Journal 814 (2): 13. doi:10.1088/0004-637X/814/2/117. Bibcode: 2015ApJ...814..117N. 
  15. ↑ 15.0 15.1 15.2 15.3 15.4 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C. et al. (November 2012). "Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids". The Astrophysical Journal Letters 759 (1): 5. doi:10.1088/2041-8205/759/1/L8. Bibcode: 2012ApJ...759L...8M. 
  16. ↑ 16.0 16.1 Behrend, Raoul. "Asteroids and comets rotation curves – (156) Xanthippe". Geneva Observatory. http://obswww.unige.ch/~behrend/page1cou.html#000156. Retrieved 29 May 2018. 
  17. ↑ 17.0 17.1 Harris, A. W.; Young, J. W. (October 1989). "Asteroid lightcurve observations from 1979-1981". Icarus 81 (2): 314–364. doi:10.1016/0019-1035(89)90056-0. ISSN 0019-1035. Bibcode: 1989Icar...81..314H. 
  18. ↑ 18.0 18.1 Debehogne, H.; de Sanctis, G.; Zappala, V. (April 1982). "Photoelectric photometry of three dark asteroids". Astronomy and Astrophysics 108 (1): 197–200. Bibcode: 1982A&A...108..197D. 
  19. ↑ 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. doi:10.1016/j.icarus.2015.08.007. Bibcode: 2015Icar..261...34V. 

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