| Discovery[1] | |
|---|---|
| Discovered by | L. Chernykh |
| Discovery site | Crimean Astrophysical Obs. |
| Discovery date | 29 May 1971 |
| Designations | |
| (2127) Tanya | |
Named after | Tanya Savicheva (Russian child diarist)[2] |
| 1971 KB1 · 1953 GH1 | |
| main-belt · (outer)[3] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 64.14 yr (23,428 days) |
| Aphelion | 3.3125AU |
| Perihelion | 3.1076 AU |
| 3.2100 AU | |
| Eccentricity | 0.0319 |
| 5.75yr (2,101 days) | |
| 343.14° | |
| 0° 10m 17.04s / day | |
| Inclination | 13.094° |
| 106.39° | |
| 185.54° | |
| Physical characteristics | |
| Dimensions | 30.18 km(calculated)[3] 37.736±0.197 km[4] 40.111±0.397 km[5] 41.19±1.05 km[6] 41.43±9.46 km[7] 43.89±16.43 km[8] |
| 7.864±0.0211h[9] | |
| 0.03±0.06[8] 0.04±0.03[7] 0.0437±0.0049[5] 0.048±0.007[4] 0.055±0.003[6] 0.057(assumed)[3] | |
| C[3][10] | |
| 10.70[6] · 10.70±0.83[10] · 10.879±0.002(R)[9] · 10.90[8] · 11.0[5] · 11.1[1] · 11.15[7] · 11.33[3] | |
2127 Tanya, provisional designation1971 KB1, is a carbonaceousasteroid from the outer region of theasteroid belt, approximately 40 kilometers in diameter. It was discovered on 29 May 1971, by Russian astronomerLyudmila Chernykh at theCrimean Astrophysical Observatory in Nauchnij, on the Crimean peninsula.[11] It was named in memory ofTanya Savicheva, a Russian child diarist during World War II.[2]
Tanya is a carbonaceousC-type asteroid, that orbits the Sun in theouter main-belt at a distance of 3.1–3.3 AU once every 5 years and 9 months (2,101 days). Its orbit has aneccentricity of 0.03 and aninclination of 13° with respect to theecliptic.[1] It was first identified as1953 GH1 atGoethe Link Observatory in 1953, extending the body'sobservation arc by 18 years prior to its official discovery at Nauchnij.[11]
In October 2013, a rotationallightcurve ofTanya was obtained from photometric observations at thePalomar Transient Factory in California. Lightcurve analysis gave arotation period of 7.8640 hours with a brightness variation of 0.18magnitude (U=2).[9]
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,Tanya measures between 37.736 and 43.89 kilometers in diameter, and its surface has a lowalbedo between 0.03 and 0.055.[4][5][6][7][8] TheCollaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous asteroids of 0.057 and calculates a much smaller diameter of 30.18 kilometers based on anabsolute magnitude of 11.33.[3]
Thisminor planet was named by the discover for the memory of the young Russian girlTanya Savicheva (1930–1944), who died after theSiege of Leningrad (1941–1944) on theEastern Front during World War II. She wrote a well-known diary, describing the death of her parents and other relatives.[2] The approved naming citation was published by theMinor Planet Center on 1 April 1980 (M.P.C. 5283).[12]
