1858 Lobachevskij

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1858 Lobachevskij
Discovery [1]
Discovered by L. Zhuravleva
Discovery site Crimean Astrophysical Obs.
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 16 February 2017 (JD 2457800.5)
Uncertainty parameter 0
Observation arc 80.13 yr (29,269 days)
Aphelion 2.9081 AU
Perihelion 2.4898 AU
2.6989 AU
Eccentricity 0.0775
4.43 yr (1,620 days)
53.836°
0° 13m 20.28s / day
Inclination 1.6607°
271.92°
17.673°
Physical characteristics
Dimensions 10.769±0.189[4]
10.919±0.116 km[5]
13.06 km (calculated)[3]
5.413 h (0.2255 d)[1][3]
5.4141±0.0115 h[6]
5.435±0.003 h[7]
7.00±0.01 h[8]
0.18 (assumed)[3]
0.3737±0.0590[5]
0.383±0.055[4]
SMASS = L[1]
11.9[1]

1858 Lobachevskij (erroneously 1858 Lobachevsk) provisionally designated 1972 QL, is a rare-type asteroid from the middle region of the asteroid belt, approximately 13 kilometers in diameter.[3]

It was discovered on 18 August 1972, by Soviet astronomer Lyudmila Zhuravleva at the Crimean Astrophysical Observatory in Nauchnyj, on the Crimean peninsula.[9] It was named after Russian mathematician Nikolai Lobachevsky.[2]

Description[edit]

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 (1,620 days). Its orbit has an eccentricity of 0.08 and an inclination of 2° with respect to the ecliptic.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]

Lobachevskij has its rotation period of 5.435 hours .[7][6] A previously obtaine lightcurve gave a period of this particular to be 7.00±0.01 hours, with an amplitude of 0.6 magnitude.[8] Its has an absolute magnitude of 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.[10]

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.[11]

This minor planet was named in honor of mathematician Nikolai Lobachevsky (1792–1856), Russian mathematician and creator of the first comprehensive system of non-Euclidean geometry.[2][10]

References[edit]

  1. ^ a b c d e f "JPL Small-Body Database Browser: 1858 Lobachevskij (1972 QL)" (2016-08-12 last obs.). Jet Propulsion Laboratory. Retrieved 29 March 2017. 
  2. ^ a b c Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (1858) Lobachevskij. Springer Berlin Heidelberg. p. 149. ISBN 978-3-540-00238-3. Retrieved 29 March 2017. 
  3. ^ a b c d e "LCDB Data for (1858) Lobachevskij". Asteroid Lightcurve Database (LCDB). Retrieved 22 August 2016. 
  4. ^ a b 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. arXiv:1109.4096Freely accessible. Bibcode:2011ApJ...741...68M. doi:10.1088/0004-637X/741/2/68. Retrieved 29 March 2017. 
  5. ^ 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. 
  6. ^ 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. 
  7. ^ 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. 
  8. ^ 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. 
  9. ^ "1858 Lobachevskij (1972 QL)". Minor Planet Center. Retrieved 29 March 2017. 
  10. ^ a b http://www.asteroidoccultation.com/2007_06/0615_1858_10446_Summary.txt[dead link]
  11. ^ "Minor Planet Discoverers". Minor Planet Center. 4 October 2015. 

External links[edit]