| Discovery[1] | |
|---|---|
| Discovered by | T. Smirnova |
| Discovery site | Crimean Astrophysical Obs. |
| Discovery date | 28 April 1971 |
| Designations | |
| (2093) Genichesk | |
Named after | Henichesk (Ukrainian town)[2] |
| 1971 HX · 1974 CN1 1975 VG2 | |
| main-belt · Baptistina[3] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 66.78 yr (24,392 days) |
| Aphelion | 2.6507AU |
| Perihelion | 1.8877 AU |
| 2.2692 AU | |
| Eccentricity | 0.1681 |
| 3.42yr (1,249 days) | |
| 175.62° | |
| 0° 17m 17.88s / day | |
| Inclination | 6.0914° |
| 154.86° | |
| 118.21° | |
| Physical characteristics | |
| Dimensions | 8.804±1.922 km[4] 12.29 km(derived)[3] |
| 11.022±0.002h[5] 11.0231±0.0159 h[6] 11.028±0.006 h[7][a] | |
| 0.057(assumed)[3] 0.158±0.108[4] | |
| C[3] | |
| 12.880±0.004(R)[6] · 12.9[1] · 13.28±0.04[8] · 13.28±0.19[9] · 13.28[3] | |
2093 Genichesk, provisional designation1971 HX, is a Baptistinaasteroid from the inner regions of theasteroid belt, approximately 12 kilometers in diameter. It was discovered on 28 April 1971, by Russian astronomerTamara Smirnova at theCrimean Astrophysical Observatory in Nauchnyj, on the Crimean peninsula.[10] It was named for the Ukrainian townHenichesk.[2]
Genichesk is a member of theBaptistina family. It orbits the Sun in theinner main-belt at a distance of 1.9–2.7 AU once every 3 years and 5 months (1,249 days). Its orbit has aneccentricity of 0.17 and aninclination of 6° with respect to theecliptic.[1] A firstprecovery was taken atPalomar Observatory in 1950, extending the body'sobservation arc by 21 years prior to its official discovery.[10]
TheCollaborative Asteroid Lightcurve Link assumes a standardalbedo for carbonaceousC-type asteroids of 0.57 and calculates a diameter of 12.29 kilometers, based on an absolutemagnitude of 13.28,[3] while according to preliminary data from theNEOWISE mission of NASA'sWide-field Infrared Survey Explorer, the asteroid's surface has a much higher albedo of 0.158 and only measures 8.8 kilometers in diameter.[4]
Photometric observations by astronomerBrian D. Warner at thePalmer Divide Observatory in Colorado (716) during winter 2007–2008 were used to build alightcurve, which gave arotation period of11.028±0.006 hours and a brightness variation of0.24±0.02 in magnitude (U=3).[7][a] The results concur with observations made by French amateur astronomersStéphane Charbonnel andLaurent Bernasconi, and with analysed data from thePalomar Transient Factory Survey in 2004 and 2015, respectively (U=2/2).[5][6]
Thisminor planet was named after the Ukrainian town Genichesk (Henichesk), the discoverer's birthplace in the formerUkrainian Soviet Socialist Republic.[2] The official naming citation was published by theMinor Planet Center on 1 April 1980 (M.P.C. 5282).[11]
