Astronomy:1954 Kukarkin
_Kukarkin.png) Modelled shape of Kukarkin from its lightcurve | |
| Discovery[1] | |
|---|---|
| Discovered by | P. F. Shajn |
| Discovery site | Simeiz Obs. |
| Discovery date | 15 August 1952 |
| Designations | |
| (1954) Kukarkin | |
| Named after | Boris Kukarkin (astronomer)[2] |
| 1952 PH · 1957 QB | |
| Minor planet category | main-belt · (outer)[3] |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 63.87 yr (23,327 days) |
| |{{{apsis}}}|helion}} | 3.8543 AU |
| |{{{apsis}}}|helion}} | 2.0177 AU |
| 2.9360 AU | |
| Eccentricity | 0.3128 |
| Orbital period | 5.03 yr (1,838 days) |
| Mean anomaly | 324.18° |
| Mean motion | 0° 11m 45.24s / day |
| Inclination | 14.794° |
| Longitude of ascending node | 278.02° |
| 70.427° | |
| Physical characteristics | |
| Dimensions | 13.659±0.309 km[4][5] 30.59 km (calculated)[3] |
| Rotation period | 136.40±0.03 h[6] |
| Geometric albedo | 0.057 (assumed)[3] 0.261±0.016[4][5] |
| C[3] | |
| Absolute magnitude (H) | 11.3[1][3] · 11.4[4] |
1954 Kukarkin (prov. designation: 1952 PH) is an asteroid and slow rotator on an eccentric orbit from the outer regions of the asteroid belt. It was discovered on 15 August 1952, by Russian astronomer Pelageya Shajn at Simeiz Observatory on the Crimean peninsula.[7] The asteroid has a exceptionally long rotation period of 136.4 hours and measures approximately 30 kilometers (19 miles) in diameter. It was named after astronomer Boris Kukarkin.[2]
Orbit and classification
Kukarkin orbits the Sun in the outer main-belt at a distance of 2.0–3.9 AU once every 5.03 years (1,838 days). Its orbit has an eccentricity of 0.31 and an inclination of 15° with respect to the ecliptic.[1] No precoveries were taken prior to its discovery.[7]
Naming
This minor planet is named after stellar astronomer Boris Vasilyevich Kukarkin (1909–1977), a well-known specialist for variable stars, the structure of stellar systems, and professor at Moscow State University. Kukarkin started and edited the General Catalogue of Variable Stars that was first published in 1948. He also served as vice-president of the Astronomical Council of Academy of Sciences of the USSR as well as of the International Astronomical Union and was the president of its Commission 27.[2] The approved naming citation was published by the Minor Planet Center on 1 June 1980 (M.P.C. 5358).[8]
Physical characteristics
Kukarkin is a slow rotator, with a long period of 136.40±0.03 hours, measured at Los Algarrobos Observatory, Uruguay (I38) during a favorable opposition in 2012. The well-defined rotational lightcurve had brightness variation of 0.8±0.05 magnitude ({{{1}}}).[6]
While observations taken by NEOWISE gave an albedo of 0.2608±0.0155 and a diameter of 13.659±0.309 kilometers,[4] the Collaborative Asteroid Lightcurve Link assumes a standard albedo for a carbonaceous C-type asteroid of 0.057 and calculates a significantly larger diameter of 30.6 kilometers, as the lower the albedo, the larger the body's diameter at a constant absolute magnitude.[3]
References
- ↑ 1.0 1.1 1.2 1.3 "JPL Small-Body Database Browser: 1954 Kukarkin (1952 PH)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001954.
- ↑ 2.0 2.1 2.2 Schmadel, Lutz D. (2007). "(1954) Kukarkin". Dictionary of Minor Planet Names – (1954) Kukarkin. Springer Berlin Heidelberg. p. 157. doi:10.1007/978-3-540-29925-7_1955. ISBN 978-3-540-00238-3.
- ↑ 3.0 3.1 3.2 3.3 3.4 3.5 "LCDB Data for (1954) Kukarkin". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=1954%7CKukarkin.
- ↑ 4.0 4.1 4.2 4.3 Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D. et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results". The Astrophysical Journal 741 (2): 25. doi:10.1088/0004-637X/741/2/90. Bibcode: 2011ApJ...741...90M. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011ApJ...741...90M. Retrieved 18 May 2016.
- ↑ 5.0 5.1 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Dailey, J. et al. (November 2011). "Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters". The Astrophysical Journal 741 (2): 20. doi:10.1088/0004-637X/741/2/68. Bibcode: 2011ApJ...741...68M. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011ApJ...741...68M. Retrieved 8 December 2016.
- ↑ 6.0 6.1 Alvarez, Eduardo Manuel (January 2013). "Period Determination for the Slow Rotator 1954 Kukarkin". The Minor Planet Bulletin 40 (1): 29–30. ISSN 1052-8091. Bibcode: 2013MPBu...40...29A. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2013MPBu...40...29A. Retrieved 18 May 2016.
- ↑ 7.0 7.1 "1954 Kukarkin (1952 PH)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=1954.
- ↑ "MPC/MPO/MPS Archive". Minor Planet Center. https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html.
External links
- Asteroid Lightcurve Database (LCDB), query form (info )
- 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
- 1954 Kukarkin at AstDyS-2, Asteroids—Dynamic Site
- 1954 Kukarkin at the JPL Small-Body Database
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