6102 Visby

Stony background asteroid

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 (U=2+).[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. ^ 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.
  2. ^ 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.
  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.
  4. ^ 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.
  5. ^ a b c d e "LCDB Data for (6102) Visby". Asteroid Lightcurve Database (LCDB). Retrieved 14 July 2016.
  6. ^ 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.
  7. ^ 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.
  8. ^ a b "6102 Visby (1993 FQ25)". Minor Planet Center. Retrieved 14 July 2016.
  9. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 14 July 2016.
  • 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
    • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
  • 6102 Visby at the JPL Small-Body Database Edit this at Wikidata
    • Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters
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