1858 Lobachevskij

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"Lobachevsk" and "Lobachevskij" redirect here. For other uses, see Lobachevsky (disambiguation).
1858 Lobachevskij
Discovery [1]
Discovered by L. Zhuravleva
Discovery site CrAO - Nauchnyj
Discovery date 18 August 1972
Designations
MPC designation 1858 Lobachevskij
Named after
Nikolai Lobachevsky[2]
1972 QL · 1928 SG
1936 MH · 1955 VW
1957 BM · 1964 YC
main-belt (middle)[3]
Orbital characteristics[1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc 79.05 yr (28873 days)
Aphelion 2.9066 AU (434.82 Gm)
Perihelion 2.4899 AU (372.48 Gm)
2.6982 AU (403.64 Gm)
Eccentricity 0.077223
4.43 yr (1618.9 d)
324.93°
0° 13m 20.568s / day
Inclination 1.6610°
271.93°
17.637°
Earth MOID 1.47188 AU (220.190 Gm)
Jupiter MOID 2.20085 AU (329.242 Gm)
Jupiter Tisserand parameter 3.364
Physical characteristics
Dimensions 10.919±0.116 km[4]
13.06 km (calculated)[3]
5.413 h (0.2255 d)[1][3]
7.00±0.01 h[5]
5.435±0.003 h[6]
5.4141±0.0115 h[7]
0.3737±0.0590[4]
0.18 (assumed)[3]
SMASS = L
11.9

1858 Lobachevskij, sometimes 1858 Lobachevsk, provisionally designated 1972 QL, is an asteroid in the middle region of the main-belt, calculated to be about 13 kilometers in diameter.[3] It was discovered on August 18, 1972, by Lyudmila Zhuravleva at Crimean Astrophysical Observatory in Nauchnyj.[8] The strongly reddish and relatively uncommon L-type asteroid had already been photographed in precovery images dating back to the 1930s, providing it with a much larger observation arc. It orbits the Sun at a distance of 2.5–2.9 AU once every 4 years and 5 months (1,619 days). The orbit is only slightly eccentric and nearly coplanar to the plane of the ecliptic.[1]

It has its rotation period determined to be about five and a half hours.[6][7] A previous photographic survey in a May 2002 by U.S. astronomers found the rotation period of this particular to be 7.00±0.01 hours, with an amplitude of 0.6 mag.[5] Its absolute magnitude was determined to be 11.5.

The asteroid covered a 10.4 mag star—a phenomenon known as occultation—in the constellation Sagittarius in June 2007. It was predicted that the event could be seen in the northeastern United States and southeast Canada. The combined light magnitude of the bodies would drop momentarily—for a maximum of 2.2 seconds.[9]

Lyudmila Zhuravleva has discovery 200 minor planets, 13 of which were co-discoveries, between 1972 and 1992. She is ranked 61 on the MPC's all-time discoverer list.[10]

The asteroid was named in honor of mathematician Nikolaj Ivanovich Lobachevskij (1792–1856), Russian mathematician, the creator of the first comprehensive system of non-Euclidian geometry.[2][9]

References[edit]

  1. ^ a b c d "JPL Small-Body Database Browser: 1858 Lobachevskij (1972 QL)" (2015-07-13 last obs.). Jet Propulsion Laboratory. Retrieved 20 April 2016. 
  2. ^ a b Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1858) Lobachevskij. Springer Berlin Heidelberg. p. 149. ISBN 978-3-540-29925-7. Retrieved 22 August 2016. 
  3. ^ a b c d e "LCDB Data for (1858) Lobachevskij". Asteroid Lightcurve Database (LCDB). Retrieved 22 August 2016. 
  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 22 August 2016. 
  5. ^ a b Ditteon, R.; Bixby, A. R.; Sarros, A. M.; Waters, C. T. (December 2002). "Rotation Periods and Lightcurves of 1858 Lobachevskij, 2384 Schulhof and (5515) 1989 EL1". The Minor Planet Bulletin. 29: 69. Bibcode:2002MPBu...29...69D. Retrieved 22 August 2016. 
  6. ^ a b Ditteon, Richard; Horn, Lauren; Kamperman, Amy; Vorjohan, Bradley; Kirkpatrick, Elaine (January 2012). "Asteroid Lightcurve Analysis at the Oakley Souther Sky Observatory: 2011 April-May". The Minor Planet Bulletin. 39 (1): 26–28. Bibcode:2012MPBu...39...26D. ISSN 1052-8091. Retrieved 22 August 2016. 
  7. ^ a b Waszczak, Adam; Chang, Chan-Kao; Ofek, Eran O.; Laher, Russ; Masci, Frank; Levitan, David; et al. (September 2015). "Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry". The Astronomical Journal. 150 (3): 35. arXiv:1504.04041Freely accessible. Bibcode:2015AJ....150...75W. doi:10.1088/0004-6256/150/3/75. Retrieved 22 August 2016. 
  8. ^ "1858 Lobachevskij (1972 QL)". Minor Planet Center. Retrieved 22 August 2016. 
  9. ^ a b http://www.asteroidoccultation.com/2007_06/0615_1858_10446_Summary.txt[dead link]
  10. ^ "Minor Planet Discoverers". Minor Planet Center. 4 October 2015. 

External links[edit]