| Discovery[1] | |
|---|---|
| Discovered by | P. Wild |
| Discovery site | Zimmerwald Obs. |
| Discovery date | 12 October 1977 |
| Designations | |
| (2175) Andrea Doria | |
Named after | Andrea Doria (16th-century admiral)[2] |
| 1977 TY · 1964 VY1 1967 RS · 1967 TE | |
| main-belt · Flora[3] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 66.18 yr (24,171 days) |
| Aphelion | 2.6751AU |
| Perihelion | 1.7560 AU |
| 2.2155 AU | |
| Eccentricity | 0.2074 |
| 3.30yr (1,205 days) | |
| 44.452° | |
| 0° 17m 56.04s / day | |
| Inclination | 3.7056° |
| 222.09° | |
| 143.68° | |
| Physical characteristics | |
| Dimensions | 3.86±0.14 km[4] 3.922±0.042[5] 4.013±0.021 km[6] 4.50 km(calculated)[3] |
| 4.880±0.001h[a] | |
| 0.24(assumed)[3] 0.392±0.067[4] 0.3997±0.0568[6] 0.417±0.057[5] | |
| S[3][7] | |
| 13.6[6] · 13.70[4] · 13.9[1][3] · 14.28±0.29[7] | |
2175 Andrea Doria, provisional designation1977 TY, is a stony Florianasteroid from the inner regions of theasteroid belt, approximately 4 kilometers in diameter.
It was discovered on 12 October 1977, by Swiss astronomerPaul Wild atZimmerwald Observatory near Bern, Switzerland, and named after 16th-century Genoese admiralAndrea Doria.[2][8]
Andrea Doria is a member of theFlora family, one of the largest families ofstony asteroids in the main belt. It orbits the Sun in theinner main-belt at a distance of 1.8–2.7 AU once every 3 years and 4 months (1,205 days). Its orbit has aneccentricity of 0.21 and aninclination of 4° with respect to theecliptic.[1] A firstprecovery was taken atPalomar Observatory in 1950, extending the body'sobservation arc by 27 years prior to its official discovery observation at Zimmerwald.[8]
In October 2010, a rotationallightcurve ofAndrea Doria was obtained from photometric observations by American amateur astronomer Ralph Megna. Lightcurve analysis gave a well-definedrotation period of 4.880 hours with a brightness variation of 0.25magnitude (U=3).[a]
According to the survey carried out by NASA'sWide-field Infrared Survey Explorer with its subsequentNEOWISE mission,Andrea Doria measures between 3.86 and 4.013 kilometers in diameter and its surface has analbedo between 0.392 and 0.417.[4][5][6] TheCollaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – derived from8 Flora, aS-type asteroid and the family's largest member and namesake – and calculates a diameter of 4.50 kilometers with anabsolute magnitude of 13.9.[3]
Thisminor planet was named after Genoese admiralAndrea Doria (1466–1560), popularized in Friedrich Schiller's dramaFiesco.[2] Several ships, including theSS Andrea Doria, famous for its sinking off the coast of New England, had also been named after the admiral. The official naming citation was published by theMinor Planet Center on 22 September 1983 (M.P.C. 8151).[9]
