 Orbital diagram of Český Krumlov | |
| Discovery[1] | |
|---|---|
| Discovered by | A. Mrkos |
| Discovery site | Kleť Obs. |
| Discovery date | 19 February 1980 |
| Designations | |
| (2747) Cesky Krumlov | |
| Pronunciation | Czech:[ˈtʃɛskiːˈkrʊmlof] |
Named after | Český Krumlov (Czech town)[2] |
| 1980 DW · 1953 FO1 1975 EK5 · 1977 SV2 1977 TM3 · 1977 TS7 1982 OM | |
| main-belt · (outer)[3] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 63.93 yr (23,351 days) |
| Aphelion | 3.4959AU |
| Perihelion | 2.6996 AU |
| 3.0978 AU | |
| Eccentricity | 0.1285 |
| 5.45yr (1,991 days) | |
| 183.40° | |
| 0° 10m 50.88s / day | |
| Inclination | 5.8182° |
| 344.88° | |
| 302.03° | |
| Physical characteristics | |
| Dimensions | 20.62 km(calculated)[3] 22.51±6.03 km[4] 22.57±7.52 km[5] 28.39±0.98 km[6] 29.804±0.174 km[7] 32.103±0.239 km[8] 32.63 km[9] 36.33±0.66 km[10] |
| 438.7098±9.1557h[11] | |
| 0.028±0.004[7][10] 0.0380±0.004[9] 0.0393±0.0040[8] 0.05±0.08[4] 0.051±0.004[6] 0.057(assumed)[3] 0.06±0.07[5] | |
| X[12] · C[3] | |
| 11.6[6][8] · 11.70[5][10] · 11.706±0.003(R)[11] · 11.8[1] · 11.97±0.27[12] · 12.16[3] | |
2747 Český Krumlov (Czech:[ˈtʃɛskiːˈkrumlof]), provisional designation1980 DW, is a carbonaceousasteroid andslow rotator from the outer regions of theasteroid belt, approximately 22 kilometers in diameter. It was discovered by Czech astronomerAntonín Mrkos atKleť Observatory on 19 February 1980, and named for the Czech town ofČeský Krumlov.[2][13]
Český Krumlov belongs to theHygiea family.[citation needed] It orbits the Sun in theouter main-belt at a distance of 2.7–3.5 AU once every 5 years and 5 months (1,991 days). Its orbit has aneccentricity of 0.13 and aninclination of 6° with respect to theecliptic.[1]
It was first identified as1953 FO1 atAlmaty Observatory (210) in 1953. The body'sobservation arc begins four weeks later with aprecovery taken atPalomar Observatory, 27 years prior to its official discovery observation at Klet Observatory.[13]
Český Krumlov has been characterized as anX-type and carbonaceousC-type asteroid.[3][12]
In October 2010, a rotationallightcurve of Český Krumlov was obtained from photometric observations by astronomers at thePalomar Transient Factory in California. Lightcurve analysis gave arotation period of 438.7098 hours with a brightness variation of 0.63magnitude (U=2).[11] This makes it a veryslow rotator.
According to the surveys carried out by the Infrared Astronomical SatelliteIRAS, the JapaneseAkari satellite, and NASA'sWide-field Infrared Survey Explorer with its subsequentNEOWISE mission, Český Krumlov measures between 22.51 and 36.33 kilometers in diameter and its surface has analbedo between 0.028 and 0.06.[4][5][6][7][8][9][10]
TheCollaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous asteroids of 0.057 and calculates a diameter of 20.62 kilometers with anabsolute magnitude of 12.16.[3]
Thisminor planet was named after the historic Czech town ofČeský Krumlov, near to the location of the discovering Kleť Observatory.[2] The approved naming citation was published by theMinor Planet Center on 29 November 1993 (M.P.C. 22828).[14]
