| 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 | 3.0260AU |
| Perihelion | 2.1704 AU |
| 2.5982 AU | |
| Eccentricity | 0.1646 |
| 4.19yr (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] | |
6102 Visby, provisional designation1993 FQ25, is a stony backgroundasteroid from the central region of theasteroid belt, approximately 5 kilometers (3.1 miles) in diameter.
The asteroid was discovered on 21 March 1993, during theUppsala-ESO Survey of Asteroids and Comets (UESAC) at theESO'sLa 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 ofVisby.[2]
Visby is a non-family asteroid from the main belt'sbackground population. It orbits the Sun in thecentral main-belt at a distance of 2.2–3.0 AU once every 4 years and 2 months (1,530 days). Its orbit has aneccentricity of 0.16 and aninclination of 2° with respect to theecliptic.[1]A firstprecovery was taken atPalomar Observatory in 1989, extending the body'sobservation arc by 4 years prior to its official discovery observation at La Silla.[8]
Thisminor planet was named afterVisby, a Swedish town on the island ofGotland, known for itsmedieval andHanseatic history(also seeList of Gotland-related asteroids).[2] The official naming citation was published by theMinor Planet Center on 28 September 1999 (M.P.C. 36126).[9]
Visby has been characterized as a commonS-type asteroid byPanSTARRS' photometric survey.
A rotationallightcurve ofVisby was obtained from photometric observations at thePalomar Transient Factory in February 2013. It gave arotation period of3.28±0.01 hours with a brightness variation of 0.28 inmagnitude (U=2+).[6]
According to the survey carried out by theNEOWISE mission of NASA'sWide-field Infrared Survey Explorer,Visby measures 4.5 kilometers in diameter and its surface has analbedo of 0.29,[3][4] while theCollaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 5.2 kilometers.[5]
