Astronomy:1836 Komarov

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Short description: Asteroid
1836 Komarov
001836-asteroid shape model (1836) Komarov.png
Shape model of Komarov from its lightcurve
Discovery[1]
Discovered byN. Chernykh
Discovery siteCrimean Astrophysical Obs.
Discovery date26 July 1971
Designations
(1836) Komarov
Named afterVladimir Komarov (Soviet cosmonaut)[2]
1971 OT · 1952 KA1
1952 MT · 1961 JG
1962 SG
Minor planet categorymain-belt · (middle)
Dora[3]
Orbital characteristics[1]
Epoch 16 February 2017 (JD 2457800.5)
Uncertainty parameter 0
Observation arc63.89 yr (23,334 days)
|{{{apsis}}}|helion}}3.3187 AU
|{{{apsis}}}|helion}}2.2523 AU
2.7855 AU
Eccentricity0.1914
Orbital period4.65 yr (1,698 days)
Mean anomaly308.73°
Mean motion0° 12m 43.2s / day
Inclination7.0195°
Longitude of ascending node272.76°
12.344°
Physical characteristics
Dimensions21.16 km (calculated)[4]
21.55±6.10 km[5]
21.84±6.55 km[6]
22.240±0.304 km[7][8]
22.86±0.73 km[9]
25.40±9.32 km[10]
Rotation period8.8015±0.0004 h[11]
9.695±0.005 h[lower-alpha 1]
Geometric albedo0.042±0.005[7][8]
0.043±0.019[10]
0.05±0.05[5]
0.057 (assumed)[4]
0.06±0.06[6]
0.103±0.007[9]
SMASS = Ch[1] · C[4][12]
Absolute magnitude (H)11.30[9] · 11.9[7] · 11.98±0.37[12] · 12.00[6][10] · 12.1[1][4] · 12.15[5]


1836 Komarov (prov. designation: 1971 OT) is a carbonaceous Dorian asteroid from the central region of the asteroid belt, approximately 22 kilometers in diameter. It was discovered on 26 July 1971 by Russian astronomer Nikolai Chernykh at Crimean Astrophysical Observatory in Nauchnij on the Crimean peninsula.[13] It was named after Soviet cosmonaut Vladimir Komarov.[2]

Classification and orbit

Komarov is a member of the Dora family (FIN: 512), a well-established central asteroid family of more than 1,200 carbonaceous asteroids. The family's namesake is 668 Dora. It is alternatively known as the "Zhongolovich family", named after its presumably largest member 1734 Zhongolovich. The Dora family may also contain a subfamily.[3][14]:13,23

It orbits the Sun at a distance of 2.3–3.3 AU once every 4 years and 8 months (1,697 days). Its orbit has an eccentricity of 0.19 and an inclination of 7° with respect to the ecliptic.[1]

Physical characteristics

Komarov is characterized as a dark C-type asteroid by Pan-STARRS photometric survey.[12] It is also classified as a hydrated Ch-subtype in the SMASS classification scheme.[1]

Diameter and albedo

According to the surveys carried out by the Japanese Akari satellite and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Komarov measures between 21.55 and 25.40 kilometers in diameter and its surface has an albedo between 0.042 and 0.103.[5][6][7][8][9][10] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous asteroids of 0.057 and calculates a diameter of 21.16 kilometers based on an absolute magnitude of 12.1.[4]

Lightcurves

In July 2008, two rotational lightcurve of Komarov were independently obtained from photometric observations by astronomers Julian Oey and Peter Caspari. Lightcurve analysis gave a rotation period of 8.8015 and 9.695 hours with a brightness amplitude of 0.39 and 0.56 magnitude, respectively ({{{1}}}).[11][lower-alpha 1]

Naming

This minor planet was named in honor of Vladimir Komarov (1927–1967), Soviet cosmonaut who headed the manned flight on the Voskhod spacecraft. He was killed when the Soyuz 1 space capsule crashed after re-entry on 24 April 1967, due to a parachute failure.[2][15] The official naming citation was published by the Minor Planet Center on 1 June 1975 (M.P.C. 3825).[16]

Notes

  1. ↑ 1.0 1.1 Caspari (2008): rotation period 9.695±0.005 hours with a brightness amplitude of 0.56 mag. and a quality code of 2+. Observation date:2008-07-05. Summary figures for (1836) Komarov at Collaborative Asteroid Lightcurve Link (CALL)

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 "JPL Small-Body Database Browser: 1836 Komarov (1971 OT)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001836. 
  2. ↑ 2.0 2.1 2.2 Schmadel, Lutz D. (2007). "(1836) Komarov". Dictionary of Minor Planet Names. Springer Berlin Heidelberg. p. 147. doi:10.1007/978-3-540-29925-7_1837. ISBN 978-3-540-00238-3. 
  3. ↑ 3.0 3.1 Broz, M.; Morbidelli, A.; Bottke, W. F.; Rozehnal, J.; Vokrouhlický, D.; Nesvorný, D. (March 2013). "Constraining the cometary flux through the asteroid belt during the late heavy bombardment". Astronomy and Astrophysics 551: 16. doi:10.1051/0004-6361/201219296. Bibcode: 2013A&A...551A.117B. 
  4. ↑ 4.0 4.1 4.2 4.3 4.4 "LCDB Data for (1836) Komarov". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=1836%7CKomarov. 
  5. ↑ 5.0 5.1 5.2 5.3 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. 
  6. ↑ 6.0 6.1 6.2 6.3 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. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015ApJ...814..117N. Retrieved 7 July 2017. 
  7. ↑ 7.0 7.1 7.2 7.3 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. 
  8. ↑ 8.0 8.1 8.2 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Dailey, J. et al. (November 2011). "Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters". The Astrophysical Journal 741 (2): 20. doi:10.1088/0004-637X/741/2/68. Bibcode: 2011ApJ...741...68M. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011ApJ...741...68M. Retrieved 14 December 2016. 
  9. ↑ 9.0 9.1 9.2 9.3 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)
  10. ↑ 10.0 10.1 10.2 10.3 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. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012ApJ...759L...8M. Retrieved 14 December 2016. 
  11. ↑ 11.0 11.1 Oey, Julian (October 2009). "Lightcurve Analysis of Asteroids from Leura and Kingsgrove Observatory in the Second Half of 2008". The Minor Planet Bulletin 36 (4): 162–164. ISSN 1052-8091. Bibcode: 2009MPBu...36..162O. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2009MPBu...36..162O. Retrieved 14 December 2016. 
  12. ↑ 12.0 12.1 12.2 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. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015Icar..261...34V. Retrieved 14 December 2016. 
  13. ↑ "1836 Komarov (1971 OT)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=1836. 
  14. ↑ Nesvorný, D.; Broz, M.; Carruba, V. (December 2014). "Identification and Dynamical Properties of Asteroid Families". Asteroids IV. pp. 297–321. doi:10.2458/azu_uapress_9780816532131-ch016. ISBN 978-0-8165-3213-1. Bibcode: 2015aste.book..297N. 
  15. ↑ Lawrence W. Baker, ed (2005). "Almanac". Space Exploration Reference Library. 1. 
  16. ↑ Schmadel, Lutz D. (2009). "Appendix – Publication Dates of the MPCs". Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008). Springer Berlin Heidelberg. p. 221. doi:10.1007/978-3-642-01965-4. ISBN 978-3-642-01964-7. 

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