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. It was later named after British/American astronomer  Michael Dworetsky.
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.
The asteroid has been characterized as a common
S-type asteroid by PanSTARRS ' photometric survey.
Dworetsky has a rotation period of 12.8 hours 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.  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.
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". 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 , who made the identifications involving this minor planet. 1615 Bardwell) The official naming citation was published by the  Minor Planet Center on 27 June 1991 ( ). M.P.C. 18448
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"JPL Small-Body Database Browser: 2591 Dworetsky (1949 PS)" (2017-03-29 last obs.). Jet Propulsion Laboratory . Retrieved . 14 June 2017
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"LCDB Data for (2591) Dworetsky". Asteroid Lightcurve Database (LCDB) . Retrieved . 6 December 2016
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Behrend, Raoul. "Asteroids and comets rotation curves – (2591) Dworetsky". Geneva Observatory . Retrieved . 6 December 2016
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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 . 6 December 2016
"2591 Dworetsky (1949 PS)". Minor Planet Center . Retrieved . 6 December 2016
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