| Discovery[1] | |
|---|---|
| Discovered by | K. Reinmuth |
| Discovery site | Heidelberg Obs. |
| Discovery date | 11 August 1928 |
| Designations | |
| (1097) Vicia | |
| Pronunciation | /ˈvɪsiə,-ʃiə/[2] |
Named after | Vicia(flowering plant)[3] |
| 1928 PC · 1941 SO2 1958 PF · 1978 BG A907 VF | |
| main-belt · (middle)[4] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 109.40 yr (39,958 days) |
| Aphelion | 3.4186AU |
| Perihelion | 1.8697 AU |
| 2.6441 AU | |
| Eccentricity | 0.2929 |
| 4.30yr (1,570 days) | |
| 274.05° | |
| 0° 13m 45.12s / day | |
| Inclination | 1.5332° |
| 133.86° | |
| 176.51° | |
| Physical characteristics | |
| Dimensions | 19.63±6.08 km[5] 21.02 km(derived)[4] 23.110±0.118 km[6] 23.95±1.04 km[7] 24.93±0.54 km[8] 26.55±0.35 km[6] |
| 26.5±0.1h[9] | |
| 0.031±0.004[6] 0.04±0.00[7] 0.044±0.007[6] 0.05±0.02[5] 0.060±0.003[8] 0.0695(derived)[4] | |
| S/C[4] | |
| 11.70[8] · 11.90[4][5][6] · 12.0[1] · 12.14±0.26[10] · 12.20[7] | |
1097 Vicia, provisional designation1928 PC, is anasteroid from the central regions of theasteroid belt, approximately 23 kilometers in diameter. Discovered byKarl Reinmuth at theHeidelberg Observatory in 1928, the asteroid was later named after the flowering plantVicia, commonly known as vetches.
Vicia was discovered by German astronomerKarl Reinmuth at theHeidelberg-Königstuhl State Observatory in southwest Germany on 11 August 1928.[11] On 15 and 22 August, the asteroid was independently discovered by Soviet astronomerPelageya Shajn atSimeiz Observatory on the Crimean peninsula, and by English astronomerHarry Edwin Wood at theJohannesburg Observatory in South Africa, respectively.[3] However, theMinor Planet Center only recognizes the first discoverer.[11]
The asteroid was first identified asA907 VF at Heidelberg in May 1907. The body'sobservation arc begins at Heidelberg in August 1928, six nights after its official discovery observation.[11]
Vicia is a non-family asteroid from the main belt'sbackground population. It orbits the Sun in thecentral main belt at a distance of 1.9–3.4 AU once every 4 years and 4 months (1,570 days). Its orbit has aneccentricity of 0.29 and aninclination of 2° with respect to theecliptic.[1]
Viciaspectral type has not been determined. Asteroids in the central main belt with asemi-major axis between 2.6 and 2.7 AU, are located in a transitional region where bothstony andcarbonaceous asteroids are frequent and generic assumptions are difficult.[4][a]
In November 2010, a rotationallightcurve ofVicia was obtained from photometric observations by Gordon Gartrelle at the University of North Dakota (730) and at theBadlands Observatory in North Dakota, United States. Analysis of the fragmentary lightcurve gave arotation period of 26.5 hours with a brightness variation of 0.08magnitude, indicative for a spherical rather than irregular and elongated shape (U=1).[9] As of 2017, however, no other lightcurve has been obtained andVicia's rotation period has not yet been secured.[4]
According to the surveys carried out by the JapaneseAkari satellite and theNEOWISE mission of NASA'sWide-field Infrared Survey Explorer,Vicia measures between 19.63 and 26.55 kilometers in diameter and its surface has analbedo between 0.031 and 0.060.[5][6][7][8]
TheCollaborative Asteroid Lightcurve Link derives an albedo of 0.0695 and a diameter of 21.02 kilometers based on anabsolute magnitude of 11.9.[4]
Thisminor planet was named after the flowering plantVicia, member of theFabaceae (legume family). It is commonly known as vetches. The official naming citation was mentioned inThe Names of the Minor Planets byPaul Herget in 1955 (H 103).[3]
Due to his many discoveries,Karl Reinmuth submitted a large list of 66 newly named asteroids in the early 1930s. The list covered his discoveries with numbers between(1009) and(1200). This list also contained a sequence of 28 asteroids, starting with1054 Forsytia, that were all named after plants, in particularflowering plants(also see list of minor planets named after animals and plants).[12]
