.png) Lightcurve-based 3D-model ofTinchen | |
| Discovery[1] | |
|---|---|
| Discovered by | L. Kohoutek |
| Discovery site | Bergedorf Obs. |
| Discovery date | 14 January 1972 |
| Designations | |
| (1933) Tinchen | |
Named after | Christine Kohoutek (wife of the discoverer)[2] |
| 1972 AC · 1956 TB 1956 VE · 1962 JF 1962 JS | |
| main-belt · Vesta[3] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 60.59 yr (22,131 days) |
| Aphelion | 2.6437AU |
| Perihelion | 2.0617 AU |
| 2.3527 AU | |
| Eccentricity | 0.1237 |
| 3.61yr (1,318 days) | |
| 315.04° | |
| 0° 16m 23.16s / day | |
| Inclination | 6.8822° |
| 164.93° | |
| 214.52° | |
| Physical characteristics | |
| Dimensions | 4.51±0.11 km[4] 5.04 km(calculated)[3] 6.454±0.041 km[5] |
| 3.67±0.07h[6] 3.6703±0.0006 h[7] 3.671±0.005 h[8] 3.672±0.003 h[a] | |
| 0.2950±0.0588[5] 0.4(assumed)[3] 0.613±0.029[4] | |
| V[3] | |
| 12.769±0.003(R)[7] · 12.88[4] · 12.9[5] · 13.07±0.32[9] · 13.1[1][3] | |
1933 Tinchen, provisional designation1972 AC, is a Vestianasteroid from the inner regions of theasteroid belt, about 5 kilometers in diameter. It was discovered on 14 January 1972, by Czech astronomerLuboš Kohoutek at the HamburgerBergedorf Observatory in Germany, who named it after his wife, Christine Kohoutek.[2][10]
Tinchen orbits the Sun in theinner main-belt at a distance of 2.1–2.6 AU once every 3 years and 7 months (1,318 days). Its orbit has aneccentricity of 0.12 and aninclination of 7° with respect to theecliptic.[1]
The vestoid orV-type asteroid is also a member of theVesta family. Asteroids with these spectral and orbital characteristics are thought to have all originated from theRheasilvia crater, a large impact crater on the south-polar surface of4 Vesta, which is the main-belt's second-most-massive asteroid after1 Ceres.
Tinchen has arotation period of 3.671 hours.[6][7][a]
According to the survey carried out by NASA'sWide-field Infrared Survey Explorer with its subsequentNEOWISE mission,Tinchen measures between 4.51 and 6.454 kilometers in diameter and its surface has analbedo between 0.2950 and 0.613.[4][5] TheCollaborative Asteroid Lightcurve Link assumes a standard albedo for Vestian asteroids of 0.40 and calculates a diameter of 5.04 kilometers with anabsolute magnitude of 13.1.[3]
The discoverer named thisminor planet after his wife, Christine Kohoutek.[2] The officialnaming citation was published by theMinor Planet Center on 20 February 1976 (M.P.C. 3938).[11]
