2591 Dworetsky
| Discovery [1] | |
|---|---|
| Discovered by | K. Reinmuth |
| Discovery site | Heidelberg Obs. |
| Discovery date | 2 August 1949 |
| Designations | |
| MPC designation | 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 | |
| main-belt · (outer) [3] | |
| Orbital characteristics [1] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 81.45 yr (29748 days) |
| Aphelion | 3.0613 AU (457.96 Gm) |
| Perihelion | 2.8158 AU (421.24 Gm) |
| 2.9385 AU (439.59 Gm) | |
| Eccentricity | 0.041773 |
| 5.04 yr (1839.9 d) | |
| 119.20° | |
| 0° 11m 44.376s / day | |
| Inclination | 1.5431° |
| 356.27° | |
| 273.79° | |
| Earth MOID | 1.79869 AU (269.080 Gm) |
| Jupiter MOID | 1.96872 AU (294.516 Gm) |
| Jupiter Tisserand parameter | 3.272 |
| Physical characteristics | |
| Dimensions |
13.269±0.195 km[4] 15.60 km (calculated)[3] |
| 12.77 h (0.532 d)[5] | |
|
0.2792±0.0310[4] 0.20 (assumed)[3] | |
| S [3] | |
| 11.5[1] | |
|
| |
2591 Dworetsky, provisional designation 1949 PS, is a stony asteroid from the outer region of the asteroid belt, about 14 kilometers in diameter. It was discovered on 2 August 1949, by German astronomer Karl Reinmuth at the Heidelberg Observatory in southern Germany.[6]
The S-type asteroid orbits the Sun at a distance of 2.8–3.1 AU once every 5.04 years (1,840 days). Its orbit shows an eccentricity of 0.04 and is nearly coplanar to the ecliptic, tilted by 2 degrees only. It has a rotation period of 12.8 hours[5] and an albedo of 0.28, based on observations made by Wide-field Infrared Survey Explorer.[4] The Collaborative Asteroid Lightcurve Link assumes a somewhat lower albedo of 0.20.[3]
The minor planet was named in honor of British astronomer Michael M. 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".[7] 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]
References
- 1 2 3 "JPL Small-Body Database Browser: 2591 Dworetsky (1949 PS)" (2015-11-15 last obs.). Jet Propulsion Laboratory. Retrieved 15 April 2016.
- 1 2 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (2591) Dworetsky. Springer Berlin Heidelberg. p. 211. ISBN 978-3-540-29925-7. Retrieved 10 December 2015.
- 1 2 3 4 5 "LCDB Data for (2591) Dworetsky". Asteroid Lightcurve Database (LCDB). Retrieved 10 December 2015.
- 1 2 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. arXiv:1109.6407
. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved 10 December 2015. - 1 2 Behrend, Raoul. "Asteroids and comets rotation curves – (2591) Dworetsky". Geneva Observatory. Retrieved 10 December 2015.
- ↑ "2591 Dworetsky (1949 PS)". Minor Planet Center. Retrieved 10 December 2015.
- ↑ "Michael M. Dworetsky". International Astronomical Union (IAU). Retrieved 10 December 2015.
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 the JPL Small-Body Database
