| Discovery[1] | |
|---|---|
| Discovered by | L. G. Karachkina |
| Discovery site | Crimean Astrophysical Obs. |
| Discovery date | 13 January 1983 |
| Designations | |
| (2892) Filipenko | |
Named after | Aleksandr Filipenko (Crimean surgeon)[2] |
| 1983 AX2 · 1936 QK1 1953 SB · 1953 SL 1955 DO · 1957 KP 1964 PA · A910 CK | |
| main-belt · (outer)[3] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 63.63 yr (23,242 days) |
| Aphelion | 3.8269AU |
| Perihelion | 2.5215 AU |
| 3.1742 AU | |
| Eccentricity | 0.2056 |
| 5.66yr (2,066 days) | |
| 97.252° | |
| 0° 10m 27.48s / day | |
| Inclination | 16.956° |
| 326.54° | |
| 91.945° | |
| Physical characteristics | |
| Dimensions | 56.08 km(derived)[3] 56.13±1.4 km[4] 57.37±0.93 km[5] 69.492±0.396 km[6] |
| 14.00±0.01h[7] | |
| 0.030±0.007[6] 0.0426(derived)[3] 0.045±0.002[5] 0.0466±0.002[4] | |
| SMASS =C[1] · C[3] | |
| 10.02±0.31[8] · 10.20[4][5][6] · 10.3[1][3] | |
2892 Filipenko, provisional designation1983 AX2, is a carbonaceousasteroid from the outer region of theasteroid belt, approximately 60 kilometers in diameter.
The asteroid was discovered on 13 January 1983, by Russian female astronomerLyudmila Karachkina atCrimean Astrophysical Observatory in Nauchnyj, on the Crimean peninsula.[9] It was named after surgeonAleksandr Filipenko.[2]
Filipenko is a dark asteroid that orbits the Sun in theouter main-belt at a distance of 2.5–3.8 AU once every 5 years and 8 months (2,066 days). Its orbit has aneccentricity of 0.21 and aninclination of 17° with respect to theecliptic.[1]
First identified asA910 CK at Taunton Observatory (803) in 1910,Filipenko's first used observation was made at the FinnishTurku Observatory in 1953, extending the body'sobservation arc by 30 years prior to its official discovery observation at Nauchnyj.[9]
In theSMASS classification,Filipenko has been classified as a carbonaceousC-type asteroid.[1]
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,Filipenko measures between 56.1 and 69.5 kilometers in diameter and its surface has analbedo between 0.030 and 0.046.[4][5][6] TheCollaborative Asteroid Lightcurve Link derives an albedo of 0.0426 and a smaller diameter of 56.0 kilometers with an absolutemagnitude of 10.3.[3]
In November 2004, a rotationallightcurve ofFilipenko was obtained from photometric observations byRobert D. Stephens at the Santana Observatory (646), California, and gave a well-definedrotation period of14.00±0.01 hours with a brightness variation of0.21±0.03 magnitude (U=3).[7]
Thisminor planet is named for Aleksandr Filipenko, chief surgeon at the hospital inBakhchisarai located on the Crimean peninsula. He had saved the life of a friend of the discoverer Lyudmila Karachkina.[2] The official naming citation was published by theMinor Planet Center on 13 July 1984 (M.P.C. 8913).[10]
