6102 Visby, provisional designation 1993 FQ25, is a stony background asteroid from the central region of the asteroid belt, approximately 5 kilometers (3.1 miles) in diameter.
| Discovery [1] | |
|---|---|
| Discovered by | UESAC |
| Discovery site | La Silla Obs. |
| Discovery date | 21 March 1993 |
| Designations | |
| (6102) Visby | |
Named after | Visby (Swedish town)[2] |
| 1993 FQ25 · 1990 TV11 1991 YQ2 | |
| main-belt · (middle) background | |
| Orbital characteristics [1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 27.87 yr (10,178 days) |
| Aphelion | 3.0260 AU |
| Perihelion | 2.1704 AU |
| 2.5982 AU | |
| Eccentricity | 0.1646 |
| 4.19 yr (1,530 days) | |
| 198.43° | |
| 0° 14m 7.08s / day | |
| Inclination | 1.7601° |
| 310.81° | |
| 358.44° | |
| Physical characteristics | |
| Dimensions | 4.473±0.168 km[3][4] 5.16 km (calculated)[5] |
| 3.28±0.01 h[6] | |
| 0.20 (assumed)[5] 0.292±0.077[3][4] | |
| S [5][7] | |
| 13.7[3] · 13.72±0.21[7] · 13.76±0.18 (R)[6] · 13.8[1][5] | |
The asteroid was discovered on 21 March 1993, during the Uppsala-ESO Survey of Asteroids and Comets (UESAC) at the ESO's La Silla Observatory site in northern Chile.[8] It is UESAC's lowest numbered discoveries (among more than 1,100 asteroids). It was named for the Swedish town of Visby.[2]
Orbit and classification
editVisby is a non-family asteroid from the main belt's background population. It orbits the Sun in the central main-belt at a distance of 2.2–3.0 AU once every 4 years and 2 months (1,530 days). Its orbit has an eccentricity of 0.16 and an inclination of 2° with respect to the ecliptic.[1] A first precovery was taken at Palomar Observatory in 1989, extending the body's observation arc by 4 years prior to its official discovery observation at La Silla.[8]
Naming
editThis minor planet was named after Visby, a Swedish town on the island of Gotland, known for its medieval and Hanseatic history (also see List of Gotland-related asteroids).[2] The official naming citation was published by the Minor Planet Center on 28 September 1999 (M.P.C. 36126).[9]
Physical characteristics
editVisby has been characterized as a common S-type asteroid by PanSTARRS' photometric survey.
Rotation period
editA rotational lightcurve of Visby was obtained from photometric observations at the Palomar Transient Factory in February 2013. It gave a rotation period of 3.28±0.01 hours with a brightness variation of 0.28 in magnitude (U=2+).[6]
Diameter and albedo
editAccording to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Visby measures 4.5 kilometers in diameter and its surface has an albedo of 0.29,[3][4] while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 5.2 kilometers.[5]
References
edit- ^ a b c d "JPL Small-Body Database Browser: 6102 Visby (1993 FQ25)" (2017-02-11 last obs.). Jet Propulsion Laboratory. Retrieved 21 June 2017.
- ^ a b c Schmadel, Lutz D. (2007). "(6102) Visby". Dictionary of Minor Planet Names – (6102) Visby. Springer Berlin Heidelberg. p. 509. doi:10.1007/978-3-540-29925-7_5647. ISBN 978-3-540-00238-3.
- ^ a b c d 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.
- ^ a b c 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 5 December 2016.
- ^ a b c d e "LCDB Data for (6102) Visby". Asteroid Lightcurve Database (LCDB). Retrieved 14 July 2016.
- ^ a b c Chang, Chan-Kao; Ip, Wing-Huen; Lin, Hsing-Wen; Cheng, Yu-Chi; Ngeow, Chow-Choong; Yang, Ting-Chang; et al. (June 2014). "313 New Asteroid Rotation Periods from Palomar Transient Factory Observations". The Astrophysical Journal. 788 (1): 21. arXiv:1405.1144. Bibcode:2014ApJ...788...17C. doi:10.1088/0004-637X/788/1/17. Retrieved 14 July 2016.
- ^ a b 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 July 2016.
- ^ a b "6102 Visby (1993 FQ25)". Minor Planet Center. Retrieved 14 July 2016.
- ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 14 July 2016.
External links
edit- Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
- Dictionary of Minor Planet Names, Google books
- Discovery Circumstances: Numbered Minor Planets (5001)-(10000) – Minor Planet Center
- 6102 Visby at AstDyS-2, Asteroids—Dynamic Site
- 6102 Visby at the JPL Small-Body Database