Astronomy:2591 Dworetsky
| Discovery [1] | |
|---|---|
| Discovered by | K. Reinmuth |
| Discovery site | Heidelberg Obs. |
| Discovery date | 2 August 1949 |
| Designations | |
| (2591) Dworetsky | |
| Named after | Michael Dworetsky (British astronomer)[2] |
| 1949 PS · 1929 RH1 1934 RD · 1949 QU 1952 DC1 · 1962 BD 1962 EH · 1969 OC 1973 GQ · 1975 TU4 1978 GX3 · 1979 OD14 1981 YL2 · 1982 BO | |
| Minor planet category | main-belt · (outer) [3] |
| Orbital characteristics [1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 82.57 yr (30,159 days) |
| |{{{apsis}}}|helion}} | 3.0614 AU |
| |{{{apsis}}}|helion}} | 2.8135 AU |
| 2.9374 AU | |
| Eccentricity | 0.0422 |
| Orbital period | 5.03 yr (1,839 days) |
| Mean anomaly | 236.94° |
| Mean motion | 0° 11m 44.88s / day |
| Inclination | 1.5430° |
| Longitude of ascending node | 356.26° |
| 273.52° | |
| Physical characteristics | |
| Dimensions | 12.925±0.141[4] 13.269±0.195 km[5] 15.60 km (calculated)[3] |
| Rotation period | 12.77±0.05 h[6] |
| Geometric albedo | 0.20 (assumed)[3] 0.2792±0.0310[5] 0.291±0.037[4] |
| S [3][7] | |
| Absolute magnitude (H) | 11.4[5] · 11.5[1][3] · 11.70±0.46[7] |
2591 Dworetsky, provisional designation 1949 PS, is a stony asteroid from the outer region of the asteroid belt, approximately 13 kilometers in diameter.
The asteroid was discovered on 2 August 1949, by German astronomer Karl Reinmuth at the Heidelberg Observatory in southern Germany.[8] It was later named after British/American astronomer Michael Dworetsky.[2]
Orbit and classification
Dworetsky orbits the Sun in the outer main-belt at a distance of 2.8–3.1 AU once every 5.03 years (1,839 days). Its orbit has an eccentricity of 0.04 and an inclination of 2° with respect to the ecliptic.[1]
Physical characteristics
The asteroid has been characterized as a common S-type asteroid by PanSTARRS' photometric survey.[7]
Dworetsky has a rotation period of 12.8 hours[6] and an albedo of 0.279 and 0.291, based on observations made by NASA's Wide-field Infrared Survey Explorer and its subsequent NEOWISE mission.[4][5] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20, and calculates a diameter of 15.6 kilometers, based on an absolute magnitude of 11.5.[3]
Naming
This minor planet was named in honor of British/American astronomer Michael Dworetsky, senior lecturer at University College London (UCL). He is an active member of the International Astronomical Union, affiliated to several divisions, including "Education, Outreach and Heritage".[9] His research involve the stellar abundances of the mercury group of elements and has also taken a large part in the development of the undergraduate astronomy degree program. The asteroid's name was proposed by Conrad Bardwell (also see 1615 Bardwell), who made the identifications involving this minor planet.[2] The official naming citation was published by the Minor Planet Center on 27 June 1991 (M.P.C. 18448).[10]
References
- ↑ 1.0 1.1 1.2 1.3 "JPL Small-Body Database Browser: 2591 Dworetsky (1949 PS)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2002591.
- ↑ 2.0 2.1 2.2 Schmadel, Lutz D. (2007). "(2591) Dworetsky". Dictionary of Minor Planet Names – (2591) Dworetsky. Springer Berlin Heidelberg. p. 211. doi:10.1007/978-3-540-29925-7_2592. ISBN 978-3-540-00238-3.
- ↑ 3.0 3.1 3.2 3.3 3.4 3.5 "LCDB Data for (2591) Dworetsky". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=2591%7CDworetsky.
- ↑ 4.0 4.1 4.2 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 6 December 2016.
- ↑ 5.0 5.1 5.2 5.3 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.
- ↑ 6.0 6.1 Behrend, Raoul. "Asteroids and comets rotation curves – (2591) Dworetsky". Geneva Observatory. http://obswww.unige.ch/~behrend/page4cou.html#002591.
- ↑ 7.0 7.1 7.2 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. doi:10.1016/j.icarus.2015.08.007. Bibcode: 2015Icar..261...34V. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015Icar..261...34V. Retrieved 6 December 2016.
- ↑ "2591 Dworetsky (1949 PS)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=2591.
- ↑ "Michael M. Dworetsky". International Astronomical Union (IAU). http://www.iau.org/administration/membership/individual/3124/.
- ↑ "MPC/MPO/MPS Archive". Minor Planet Center. https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html.
External links
- Dr Michael M. Dworetsky – UCL Astrophysics Group
- 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
- 2591 Dworetsky at AstDyS-2, Asteroids—Dynamic Site
- 2591 Dworetsky at the JPL Small-Body Database
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