_Castafiore.png) Shape model ofCastafiore from itslightcurve | |
| Discovery[1] | |
|---|---|
| Discovered by | S. Arend |
| Discovery site | Uccle Obs. |
| Discovery date | 19 September 1950 |
| Designations | |
| (1683) Castafiore | |
Named after | Bianca Castafiore (fictional character)[2] |
| 1950 SL · 1936 PH 1949 HA · 1959 TH | |
| main-belt · (middle)[3] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 80.55 yr (29,420 days) |
| Aphelion | 3.2165AU |
| Perihelion | 2.2554 AU |
| 2.7360 AU | |
| Eccentricity | 0.1756 |
| 4.53yr (1,653 days) | |
| 331.16° | |
| 0° 13m 4.08s / day | |
| Inclination | 12.476° |
| 326.66° | |
| 346.87° | |
| Physical characteristics | |
| Dimensions | 18.42±0.79 km[4] 21.159±0.114[5] 21.403±0.075 km[6] 25.44 km(calculated)[3] |
| 13.931±0.003h[a] | |
| 0.057(assumed)[3] 0.0888±0.0159[6] 0.119±0.017[4] 0.160±0.013[5] | |
| C[3] | |
| 11.6[4][6] · 11.66±0.46[7] · 11.7[1][3] | |
1683 Castafiore, provisional designation1950 SL, is a carbonaceousbackground asteroid from the central region of theasteroid belt, approximately 21 kilometers in diameter. It was discovered on 19 September 1950, by Belgian astronomerSylvain Arend atRoyal Observatory of Belgium in Uccle, Belgium, and named after the characterBianca Castafiore fromThe Adventures of Tintin.[8]
TheC-type asteroid orbits the Sun in themiddle main-belt at a distance of 2.3–3.2 AU once every 4 years and 6 months (1,653 days). Its orbit has aneccentricity of 0.18 and aninclination of 12° with respect to theecliptic.[1]
Thisminor planet was named forBianca Castafiore, a fictional character in the comic-stripAdventures of Tintin .[2] On the occasion of his seventy-fifth birthday, the father of the fictional character, Georges Remi, better known under his pseudonym Hergé, was honoured by the minor planet1652 Hergé.[9] The approved naming citation was published by theMinor Planet Center on 8 April 1982 (M.P.C. 6832).[10]
In September 2004, American astronomerDonald P. Pray obtained a rotationallightcurve ofCastafiore from photometric observations. It gave arotation period of 13.931 hours with a brightness variation of 0.66magnitude (U=2+).[a]
According to the survey carried out by NASA'sWide-field Infrared Survey Explorer with its subsequentNEOWISE mission,Castafiore measures 21.15 kilometers in diameter and its surface has analbedo of 0.160 (best result only),[5] while theCollaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous asteroids of 0.057, and calculates a diameter of 25.44 kilometers with anabsolute magnitude of 11.7.[3]
