1804 Chebotarev
Main-belt asteroid
From Wikipedia, the free encyclopedia
1804 Chebotarev (prov. designation: 1967 GG) is a stony background asteroid from the inner regions of the asteroid belt, approximately 10 kilometers in diameter. It was discovered on 6 April 1967, by Russian astronomer Tamara Smirnova at the Crimean Astrophysical Observatory in Nauchnyj on the Crimean peninsula.[7] The asteroid was named after Soviet astronomer Gleb Chebotaryov.[2]
_Chebotarev.png)
Shape model of Chebotarev from its lightcurve | |
| Discovery[1] | |
|---|---|
| Discovered by | T. Smirnova |
| Discovery site | Crimean Astrophysical Obs. |
| Discovery date | 6 April 1967 |
| Designations | |
| (1804) Chebotarev | |
Named after | G. A. Chebotarev (astronomer)[2] |
| 1967 GG · 1938 QL 1942 RL · 1968 QK | |
| main-belt · (inner)[3] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 78.05 yr (28,506 days) |
| Aphelion | 2.4628 AU |
| Perihelion | 2.3584 AU |
| 2.4106 AU | |
| Eccentricity | 0.0217 |
| 3.74 yr (1,367 days) | |
| 96.780° | |
| 0° 15m 47.88s / day | |
| Inclination | 3.6316° |
| 325.72° | |
| 305.47° | |
| Physical characteristics | |
| Dimensions | 9.15±1.12 km[4] 10.79 km (calculated)[3] |
| 4.026±0.002 h[5] | |
| 0.20 (assumed)[3] 0.501±0.289[4] | |
| S[3] | |
| 11.56[4] · 12.2[1][3] · 12.25±0.45[6] | |
Orbit and classification
The stony S-type asteroid orbits the Sun in the inner main-belt at a distance of 2.4–2.5 AU once every 3 years and 9 months (1,367 days). Its orbit has an eccentricity of 0.02 and an inclination of 4° with respect to the ecliptic.[1] Chebotarev was first identified as 1938 QL at Yerkes Observatory in 1938, extending the body's observation arc by 29 years prior to its official discovery observation.[7]
Physical characteristics
Rotation period
In February 2004, a rotational lightcurve of Chebotarev was obtained from photometric observations by French amateur astronomer Laurent Bernasconi. It gave a well-defined rotation period of 4.026 hours with a brightness amplitude of 0.41 magnitude (U=3).[5]
Diameter and albedo
According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Chebotarev measures 9.15 kilometers in diameter, and its surface has a high albedo of 0.501,[4] while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 10.79 kilometers with an absolute magnitude of 12.2.[3]
Naming
This minor planet was named in honor of G. A. Chebotarev (1913–1975), who was a professor and the director of the Institute of Theoretical Astronomy as well as president of IAU's Commission 20, (Positions & Motions of Minor Planets, Comets & Satellites). He is known for his work on celestial mechanics of asteroids, comets and satellites.[2] The official naming citation was published by the Minor Planet Center on 1 January 1974 (M.P.C. 3569).[8]
