6189 Völk
Discovery [1] | |
---|---|
Discovered by | E. W. Elst |
Discovery site | La Silla Obs. |
Discovery date | 2 March 1989 |
Designations | |
MPC designation | 6189 Völk |
Named after |
Elisabeth Völk (ESO staff member)[2] |
1989 EY2 · 1980 TY4 5489 T-2 | |
main-belt · Flora [3] | |
Orbital characteristics [1] | |
Epoch 31 July 2016 (JD 2457600.5) | |
Uncertainty parameter 0 | |
Observation arc | 42.40 yr (15,487 days) |
Aphelion | 2.6166 AU |
Perihelion | 1.9912 AU |
2.3039 AU | |
Eccentricity | 0.1357 |
3.5 yr (1,277 days) | |
130.6371° | |
0° 16m 54.48s / day | |
Inclination | 5.9400° |
245.3559° | |
68.6444° | |
Physical characteristics | |
Dimensions |
±0.156 km 3.982[4] 5.17 km (calculated)[3] |
±0.001 2.896h[5] | |
±0.0789 0.4434[4] 0.24 (assumed)[3] | |
S [3][6] | |
13.6[1][3] 13.5[4] ±0.59 14.43[6] | |
|
6189 Völk, provisional designation 1989 EY2, is a stony Flora asteroid from the inner regions of the asteroid belt, approximately 5 kilometers in diameter. It was discovered on 2 March 1989, by Belgian astronomer Eric Elst at ESO's La Silla Observatory in northern Chile.[7]
The S-type asteroid is a member of the Flora family, one of the largest groups of stony asteroids in the main-belt. It orbits the Sun at a distance of 2.0–2.6 AU once every 3 years and 6 months (1,277 days). Its orbit has an eccentricity of 0.14 and an inclination of 6° with respect to the plane of the ecliptic.[1] The first precovery was taken at Palomar Observatory in 1973, extending the asteroid's observation arc by 16 years prior to its discovery.[7]
Constructed from photometric observations in September 2015, a rotational light-curve was obtained by American astronomer Robert Stevens at the Center for Solar System Studies in California. It showed a well-defined rotation period of ±0.001 hours with a brightness amplitude of 0.18 in 2.896magnitude (U=3).[5]
According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, the asteroid measures 4.0 kilometers in diameter and its surface has an outstandingly high albedo of 0.44,[4] while the Collaborative Asteroid Lightcurve Link (CALL) assumes an albedo of 0.24 – in accordance with the family's largest member and namesake, 8 Flora – and calculates a diameter of 5.2 kilometers.[3] The body's S-type spectrum has also been determined in the large-scale survey performed by Pan-STARRS.[6]
The minor planet was named for Elisabeth Völk (b. 1946), administrative staff member at ESO's headquarters in Germany, in charge of the ESO Schmidt plates archive, who became a good friend of the discoverer. The naming was independently suggested by astronomer and author of the Dictionary of Minor Planets, Lutz Schmadel.[2] Naming citation was published on 15 February 1995 (M.P.C. 24766).[8]
References
- 1 2 3 4 "JPL Small-Body Database Browser: 6189 Volk (1989 EY2)" (2016-02-24 last obs.). Jet Propulsion Laboratory. Retrieved 17 May 2016.
- 1 2 Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (6189) Völk. Springer Berlin Heidelberg. p. 516. ISBN 978-3-540-00238-3. Retrieved 14 April 2016.
- 1 2 3 4 5 6 "LCDB Data for (6189) Volk". Asteroid Lightcurve Database (LCDB). Retrieved 14 April 2016.
- 1 2 3 4 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 14 April 2016.
- 1 2 Stephens, Robert D. (January 2016). "Asteroids Observed from CS3: 2015 July - September". The Minor Planet Bulletin. 43 (1): 52–56. Bibcode:2016MPBu...43...52S. ISSN 1052-8091. Retrieved 14 April 2016.
- 1 2 3 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 14 April 2016.
- 1 2 "6189 Volk (1989 EY2)". Minor Planet Center. Retrieved 14 April 2016.
- ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 17 May 2016.
External links
- ESO Schmidt Plates, Query Form
- 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 (5001)-(10000) – Minor Planet Center
- 6189 Völk at the JPL Small-Body Database