| Discovery[1] | |
|---|---|
| Discovered by | E. Skvortsov |
| Discovery site | Simeiz Obs. |
| Discovery date | 1 August 1929 |
| Designations | |
| (1149) Volga | |
Named after | Volga River[2] (Russianriver) |
| 1929 PF | |
| main-belt · (outer)[3] background[4] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 87.92 yr (32,114 days) |
| Aphelion | 3.1733AU |
| Perihelion | 2.6228 AU |
| 2.8981 AU | |
| Eccentricity | 0.0950 |
| 4.93yr (1,802 days) | |
| 258.64° | |
| 0° 11m 59.28s / day | |
| Inclination | 11.750° |
| 261.44° | |
| 116.40° | |
| Physical characteristics | |
| Dimensions | 48.50±13.27 km[5] 52.377±0.365 km[6] 53.86±18.96 km[7] 55.57±1.8 km[3][8] 56.020±1.123 km[9] 57.67±0.77 km[10] |
| 27.5h[11] | |
| 0.03±0.02[7] 0.032±0.001[10] 0.0333±0.0027[9] 0.0338±0.002[3][8] 0.038±0.006[6] 0.04±0.02[5] | |
| P[9] · C[3][12] B–V = 0.690[1] U–B = 0.250[1] | |
| 10.44±0.44[12] · 10.57[1][3][5][8][9][10][11] · 10.69[7] | |
1149 Volga, provisional designation1929 PF, is a dark backgroundasteroid from the outer regions of theasteroid belt, approximately 55 kilometers in diameter. It was discovered on 1 August 1929, by Soviet astronomerEvgenij Skvorcov (a.k.a. Skvortsov) at theSimeiz Observatory on the Crimean peninsula.[13] The asteroid was named after theVolga River.[2]
Volga is a non-family asteroid from the main belt'sbackground population.[4] It orbits the Sun in theouter asteroid belt at a distance of 2.6–3.2 AU once every 4 years and 11 months (1,802 days;semi-major axis 2.90 AU). Its orbit has aneccentricity of 0.10 and aninclination of 12° with respect to theecliptic.[1] The body'sobservation arc begins at Simeiz Observatory on 5 August 1929, four nights after its official discovery observation.[13]
TheWide-field Infrared Survey Explorer (WISE) characterizedVolga as a primitiveP-type asteroid,[9] whilePan-STARRS photometric survey found it to be a carbonaceousC-type asteroid.[3][12]
In October 1984, a rotationallightcurve ofVolga was obtained from photometric observations by American astronomerRichard Binzel. Lightcurve analysis gave a somewhat longer-than averagerotation period of 27.5 hours with a brightness amplitude of 0.26magnitude (U=2).[11]
According to the surveys carried out by the Infrared Astronomical SatelliteIRAS, the JapaneseAkari satellite and theNEOWISE mission of NASA's WISE telescope,Volga measures between 48.50 and 57.67 kilometers in diameter and its surface has analbedo between 0.03 and 0.04.[5][6][7][8][9][10]
TheCollaborative Asteroid Lightcurve Link adopts the results obtained by IRAS, that is, an albedo of 0.0338 and a diameter of 55.57 kilometers based on anabsolute magnitude of 10.57.[3][8]
Thisminor planet was named after theVolga River, the largest river in Europe and one of the principal ones ofRussia. Its name was suggested by the Institute of Theoretical Astronomy inSt. Petersburg.[2] The officialnaming citation was published by theMinor Planet Center on 1 June 1967 (M.P.C. 2740).[14]
