1933 Tinchen
Main-belt asteroid
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1933 Tinchen, provisional designation 1972 AC, is a Vestian asteroid from the inner regions of the asteroid belt, about 5 kilometers in diameter. It was discovered on 14 January 1972, by Czech astronomer Luboš Kohoutek at the Hamburger Bergedorf Observatory in Germany, who named it after his wife, Christine Kohoutek.[2][10]
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Lightcurve-based 3D-model of Tinchen | |
| 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 | 2.6437 AU |
| Perihelion | 2.0617 AU |
| 2.3527 AU | |
| Eccentricity | 0.1237 |
| 3.61 yr (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±0.07 h[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] | |
Classification and orbit
Tinchen orbits the Sun in the inner main-belt at a distance of 2.1â2.6 AU once every 3 years and 7 months (1,318 days). Its orbit has an eccentricity of 0.12 and an inclination of 7° with respect to the ecliptic.[1]
The vestoid or V-type asteroid is also a member of the Vesta family. Asteroids with these spectral and orbital characteristics are thought to have all originated from the Rheasilvia crater, a large impact crater on the south-polar surface of 4 Vesta, which is the main-belt's second-most-massive asteroid after 1 Ceres.
Physical characteristics
Tinchen has a rotation period of 3.671 hours.[6][7][a]
According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Tinchen measures between 4.51 and 6.454 kilometers in diameter and its surface has an albedo between 0.2950 and 0.613.[4][5] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for Vestian asteroids of 0.40 and calculates a diameter of 5.04 kilometers with an absolute magnitude of 13.1.[3]
Naming
The discoverer named this minor planet after his wife, Christine Kohoutek.[2] The official naming citation was published by the Minor Planet Center on 20 February 1976 (M.P.C. 3938).[11]
Notes
- Ryan 2007 (web) figures at LCDB for results of LCDB â 1933 Tinchen
