Astronomy:6102 Visby
| 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 | |
| Minor planet category | 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) |
| |{{{apsis}}}|helion}} | 3.0260 AU |
| |{{{apsis}}}|helion}} | 2.1704 AU |
| 2.5982 AU | |
| Eccentricity | 0.1646 |
| Orbital period | 4.19 yr (1,530 days) |
| Mean anomaly | 198.43° |
| Mean motion | 0° 14m 7.08s / day |
| Inclination | 1.7601° |
| Longitude of ascending node | 310.81° |
| 358.44° | |
| Physical characteristics | |
| Dimensions | 4.473±0.168 km[3][4] 5.16 km (calculated)[5] |
| Rotation period | 3.28±0.01 h[6] |
| Geometric albedo | 0.20 (assumed)[5] 0.292±0.077[3][4] |
| S [5][7] | |
| Absolute magnitude (H) | 13.7[3] · 13.72±0.21[7] · 13.76±0.18 (R)[6] · 13.8[1][5] |
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.
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
Visby 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
This 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
Visby has been characterized as a common S-type asteroid by PanSTARRS' photometric survey.
Rotation period
A 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 ({{{1}}}).[6]
Diameter and albedo
According 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
- ↑ 1.0 1.1 1.2 1.3 "JPL Small-Body Database Browser: 6102 Visby (1993 FQ25)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2006102.
- ↑ 2.0 2.1 2.2 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.
- ↑ 3.0 3.1 3.2 3.3 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. doi:10.1088/0004-637X/741/2/90. Bibcode: 2011ApJ...741...90M.
- ↑ 4.0 4.1 4.2 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. doi:10.1088/0004-637X/741/2/68. Bibcode: 2011ApJ...741...68M. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011ApJ...741...68M. Retrieved 5 December 2016.
- ↑ 5.0 5.1 5.2 5.3 5.4 "LCDB Data for (6102) Visby". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=6102%7CVisby.
- ↑ 6.0 6.1 6.2 Chang, Chan-Kao (June 2014). "313 New Asteroid Rotation Periods from Palomar Transient Factory Observations". The Astrophysical Journal 788 (1): 21. doi:10.1088/0004-637X/788/1/17. Bibcode: 2014ApJ...788...17C. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2014ApJ...788...17C. Retrieved 14 July 2016.
- ↑ 7.0 7.1 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. doi:10.1016/j.icarus.2015.08.007. Bibcode: 2015Icar..261...34V. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015Icar..261...34V. Retrieved 14 July 2016.
- ↑ 8.0 8.1 "6102 Visby (1993 FQ25)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=6102.
- ↑ "MPC/MPO/MPS Archive". Minor Planet Center. https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html.
External links
- Asteroid Lightcurve Database (LCDB), query form (info )
- 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
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