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2591 Dworetsky, provisional designation 1949 PS, is a stony asteroid from the outer region of the asteroid belt, approximately 13 kilometers in diameter.

2591 Dworetsky
Discovery [1]
Discovered byK. Reinmuth
Discovery siteHeidelberg Obs.
Discovery date2 August 1949
Designations
MPC designation
(2591) Dworetsky
Named after
Michael Dworetsky
(British astronomer)[2]
Alternative designations
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 arc82.57 yr (30,159 days)
Aphelion3.0614 AU
Perihelion2.8135 AU
Semi-major axis
2.9374 AU
Eccentricity0.0422
Orbital period (sidereal)
5.03 yr (1,839 days)
Mean anomaly
236.94°
Mean motion
0° 11m 44.88s / day
Inclination1.5430°
Longitude of ascending node
356.26°
Argument of perihelion
273.52°
Physical characteristics
Dimensions12.925±0.141[4]
13.269±0.195 km[5]
15.60 km (calculated)[3]
Synodic rotation period
12.77±0.05 h[6]
Geometric albedo
0.20 (assumed)[3]
0.2792±0.0310[5]
0.291±0.037[4]
Spectral type
S [3][7]
Absolute magnitude (H)
11.4[5] · 11.5[1][3] · 11.70±0.46[7]

    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. "JPL Small-Body Database Browser: 2591 Dworetsky (1949 PS)" (2017-03-29 last obs.). Jet Propulsion Laboratory. Retrieved 14 June 2017.
    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. "LCDB Data for (2591) Dworetsky". Asteroid Lightcurve Database (LCDB). Retrieved 6 December 2016.
    4. 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. arXiv:1109.4096. Bibcode:2011ApJ...741...68M. doi:10.1088/0004-637X/741/2/68. Retrieved 6 December 2016.
    5. 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. arXiv:1109.6407. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90.
    6. Behrend, Raoul. "Asteroids and comets rotation curves – (2591) Dworetsky". Geneva Observatory. Retrieved 6 December 2016.
    7. 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.
    8. "2591 Dworetsky (1949 PS)". Minor Planet Center. Retrieved 6 December 2016.
    9. "Michael M. Dworetsky". International Astronomical Union (IAU). Retrieved 10 December 2015.
    10. "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 6 December 2016.



    На других языках

    [de] (2591) Dworetsky

    (2591) Dworetsky (1980 KJ; 1949 WP; 1963 SM; 1974 UN; 1974 VG2; 1974 XK) ist ein ungefähr 13 Kilometer großer Asteroid des äußeren Hauptgürtels, der am 2. August 1949 vom deutschen (damals: Bundesrepublik Deutschland) Astronomen Karl Wilhelm Reinmuth an der Landessternwarte Heidelberg-Königstuhl auf dem Westgipfel des Königstuhls bei Heidelberg (IAU-Code 024) entdeckt wurde. Er gehört zur Koronis-Familie, einer Gruppe von Asteroiden, die nach (158) Koronis benannt ist.
    - [en] 2591 Dworetsky

    [ru] (2591) Дворецкий

    (2591) Дворецкий (лат. Dworetsky) — астероид главного пояса. Он был открыт 2 августа 1949 года немецким астрономом Карлом Рейнмутом в обсерватории Хайдельберг в Германии и назван в честь британского астронома Майкла Дворецкого[1].


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