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 27 June 2015 (JD 2457200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 79.05 yr (28,873 days) |
| Aphelion | 2.9066 AU |
| Perihelion | 2.4901 AU |
| 2.6984 AU | |
| Eccentricity | 0.0771 |
| 4.43 yr (1,619 days) | |
| 280.53° | |
| Inclination | 1.6608° |
| 271.93° | |
| 17.548° | |
| Physical characteristics | |
| Dimensions | 10.919±0.116 km[4] 13.06 km (caculated)[3] |
| 5.413 h[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 Zhuravlyova 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]
- ^ a b c "JPL Small-Body Database Browser: 1858 Lobachevskij (1972 QL)" (2015-07-13 last obs.). Jet Propulsion Laboratory. Retrieved October 2015.
- ^ 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 October 2015.
- ^ a b c d e "LCDB Data for (1858) Lobachevskij". Asteroid Lightcurve Database (LCDB). Retrieved October 2015.
- ^ a b Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; McMillan, R. S.; Spahr, T.; Cutri, R. M.; Wright, E.; Watkins, J.; Mo, W.; Maleszewski, C. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results". The Astrophysical Journal 741 (2): 25. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved October 2015.
- ^ 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". Bulletin of the Minor Planets (Section of the Association of Lunar and Planetary Observers) 29: 69. Bibcode:2002MPBu...29...69D. Retrieved October 2015.
- ^ 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". Bulletin of the Minor Planets (Section of the Association of Lunar and Planetary Observers) 39 (1): 26–28. Bibcode:2012MPBu...39...26D. ISSN 1052-8091. Retrieved October 2015.
- ^ a b Waszczak, Adam; Chang, Chan-Kao; Ofek, Eran O.; Laher, Russ; Masci, Frank; Levitan, David; Surace, Jason; Cheng, Yu-Chi; Ip, Wing-Huen; Kinoshita, Daisuke; Helou, George; Prince, Thomas A.; Kulkarni, Shrinivas (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. Bibcode:2015AJ....150...75W. doi:10.1088/0004-6256/150/3/75. Retrieved October 2015.
- ^ "1858 Lobachevskij (1972 QL)". Minor Planet Center. Retrieved October 2015.
- ^ a b http://www.asteroidoccultation.com/2007_06/0615_1858_10446_Summary.txt[dead link]
- ^ "Minor Planet Discoverers". Minor Planet Center. 4 October 2015.
External links[edit]
- Asteroid Lightcurve Database (LCDB), query form (info)
- Dictionary of Minor Planet Names, Google books
- 1858 Lobachevskij at the JPL Small-Body Database
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