_Magnitka.png) Shape model ofMagnitka from itslightcurve | |
| Discovery[1] | |
|---|---|
| Discovered by | Crimean Astrophysical Obs. |
| Discovery site | Crimean Astrophysical Obs. |
| Discovery date | 12 October 1971 |
| Designations | |
| (2094) Magnitka | |
Named after | Magnitogorsk(Russian city)[2] |
| 1971 TC2 · 1941 WK 1951 WP · 1956 EB 1964 TD · 1968 WE 1977 FG | |
| main-belt · Flora[3] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 75.36 yr (27,524 days) |
| Aphelion | 2.4474AU |
| Perihelion | 2.0170 AU |
| 2.2322 AU | |
| Eccentricity | 0.0964 |
| 3.34yr (1,218 days) | |
| 149.03° | |
| 0° 17m 43.8s / day | |
| Inclination | 5.0289° |
| 281.93° | |
| 251.58° | |
| Physical characteristics | |
| 9.91±0.58 km[4] 10.121±0.408 km[5] 12.053±0.055 km[6] 12.167 km[7] 12.17 km(taken)[3] 12.58±1.04 km[8] 12.69±1.1 km[9] | |
| 6.11±0.02 h[10] 6.1124±0.0002h[a] 6.24±0.01 h[11] | |
| 0.120[3][7] 0.1278±0.0129[6] 0.132±0.025[5] 0.1739±0.035[9] 0.194±0.042[8] 0.285±0.036[4] | |
| S[3] | |
| 11.90[8] · 12.0±0.2(R)[a] · 12.0[4][9] · 12.1[1] · 12.45[6] · 12.49±0.206[7] · 12.49[3] | |
2094 Magnitka (prov. designation:1971 TC2) is aFlora asteroid from the inner regions of theasteroid belt, approximately 12 kilometers (7.5 miles) in diameter. It was discovered on 12 October 1971, at and by theCrimean Astrophysical Observatory in Nauchnyj, on the Crimean peninsula.[12] The discovery has not been attributed to an observing astronomer. It was later named for the city ofMagnitogorsk.[2]
Magnitka is a member of theFlora family, one of the largest families ofstony asteroids. It orbits the Sun in theinner main-belt at a distance of 2.0–2.4 AU once every 3 years and 4 months (1,218 days). Its orbit has aneccentricity of 0.10 and aninclination of 5° with respect to theecliptic.[1] It was first identified as1941 WK at the FinnishTurku Observatory, extending the body'sobservation arc by 30 years prior to its official discovery observation.[12]
Thisminor planet was named for the city ofMagnitogorsk, Russia, one of the largest centers of metallurgy of the formerSoviet Union.[2] The city is located at the far-east of theUral Mountains, about 250 kilometers southwest of the city ofChelyabinsk in the Chelyabinsk Oblast region, also known for the spectacular air-burst of theChelyabinsk meteor in 2013. The officialnaming citation was published by theMinor Planet Center on 1 April 1980 (M.P.C. 5282).[13]
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In October 2006, two rotationallightcurves forMagnitka were obtained from photometric observations byPetr Pravec at Ondřejov Observatory and by John Menke at his Menke Observatory, respectively. Lightcurve analysis gave a concurringrotation period of 6.11 hours with a brightness variation of 0.80 and 0.86magnitude (U=3-/n.a.), respectively, indicating a non-spheroidal shape forMagnitka.[10][a] In March 2016,Pierre Antonini obtained a tentative lightcurve, which gave a period of 6.24 hours and an amplitude of 0.85 (U=2+).[11]
According to the surveys carried out by the Infrared Astronomical SatelliteIRAS, the JapaneseAkari satellite, and NASA'sWide-field Infrared Survey Explorer with its subsequentNEOWISE mission, the asteroid measures between 9.9 and 12.7 kilometers in diameter and its surface has analbedo between 0.132.[4][5][6][7][8][9] TheCollaborative Asteroid Lightcurve Link agrees with Pravec's revised thermal WISE data,[7] taking an albedo of 0.12, and a diameter of 12.17 kilometers with anabsolute magnitude of 12.49.[3]
