_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] | |
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 G. A. Chebotarev. [2]
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]
References
- ^ a b c d "JPL Small-Body Database Browser: 1804 Chebotarev (1967 GG)" (2016-09-14 last obs.). Jet Propulsion Laboratory. Retrieved 8 June 2017.
- ^ a b c Schmadel, Lutz D. (2007). "(1804) Chebotarev". Dictionary of Minor Planet Names – (1804) Chebotarev. Springer Berlin Heidelberg. pp. 144–145. doi: 10.1007/978-3-540-29925-7_1805. ISBN 978-3-540-00238-3.
- ^ a b c d e f "LCDB Data for (1804) Chebotarev". Asteroid Lightcurve Database (LCDB). Retrieved 16 December 2016.
- ^ a b c d Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; et al. (November 2012). "Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids". The Astrophysical Journal Letters. 759 (1): 5. arXiv: 1209.5794. Bibcode: 2012ApJ...759L...8M. doi: 10.1088/2041-8205/759/1/L8. Retrieved 16 December 2016.
- ^ a b Behrend, Raoul. "Asteroids and comets rotation curves – (1804) Chebotarev". Geneva Observatory. Retrieved 16 December 2016.
- ^ Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus. 261: 34–47. arXiv: 1506.00762. Bibcode: 2015Icar..261...34V. doi: 10.1016/j.icarus.2015.08.007. Retrieved 16 December 2016.
- ^ a b "1804 Chebotarev (1967 GG)". Minor Planet Center. Retrieved 16 December 2016.
- ^ Schmadel, Lutz D. (2009). "Appendix – Publication Dates of the MPCs". Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008). Springer Berlin Heidelberg. p. 221. doi: 10.1007/978-3-642-01965-4. ISBN 978-3-642-01964-7.
External links
- Asteroid Lightcurve Database (LCDB), query form ( info Archived 16 December 2017 at the Wayback Machine)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
- 1804 Chebotarev at AstDyS-2, Asteroids—Dynamic Site
- 1804 Chebotarev at the JPL Small-Body Database
