| Discovery[1] | |
|---|---|
| Discovered by | Harvard College Obs. |
| Discovery site | Oak Ridge Obs. |
| Discovery date | 1 April 1981 |
| Designations | |
| (4760) Jia-xiang | |
Named after | Zhang Jiaxiang[1] (Chinese astronomer) |
| 1981 GN1 · 1981 GP1 1982 SE5 | |
| main-belt[1][2] · (inner)[3] background[4] | |
| Orbital characteristics[2] | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 62.47yr (22,817 d) |
| Aphelion | 2.6236AU |
| Perihelion | 2.0279 AU |
| 2.3258 AU | |
| Eccentricity | 0.1281 |
| 3.55 yr (1,296 d) | |
| 37.063° | |
| 0° 16m 40.44s / day | |
| Inclination | 9.8513° |
| 177.82° | |
| 130.44° | |
| Physical characteristics | |
| 4.71 km(calculated)[3] 4.79±1.41 km[5] 5.137±0.036 km[6][7] 5.16±1.28 km[8] | |
| 14.96±0.0006 h[a][b] 14.9601 h[a][b] | |
| 0.13±0.06[8] 0.20(assumed)[3] 0.21±0.15[5] 0.227±0.042[6] 0.2275±0.0418[7] | |
| S(assumed)[3] | |
| 13.56±0.40[9] · 13.7[7] · 13.90[5] · 14.0[2][3] · 14.29[8] | |
4760 Jia-xiang, provisional designation1981 GN1, is a backgroundasteroid from the inner regions of theasteroid belt, approximately 5 kilometers (3 miles) in diameter. It was discovered on 1 April 1981, by astronomers at Harvard University'sOak Ridge Observatory in Massachusetts, United States.[1] The presumed stonyS-type asteroid was named after Chinese astronomerZhang Jiaxiang. It has arotation period of 14.96 hours.[a][b]
Jia-xiang is a non-family asteroid from the main belt'sbackground population.[4] It orbits the Sun in theinner main-belt at a distance of 2.0–2.6 AU once every 3 years and 7 months (1,296 days;semi-major axis of 2.33 AU). Its orbit has aneccentricity of 0.13 and aninclination of 10° with respect to theecliptic.[2] The body'sobservation arc begins with aprecovery taken atPalomar Observatory in January 1955, or 26 years prior to its official discovery observation at Oak Ridge.[1]
In 2017, two rotationallightcurves ofJia-xiang were obtained from photometric observations by Czech astronomerPetr Pravec atOndřejov Observatory. Lightcurve analysis gave arotation period of 14.96 and 14.9601 hours with a brightness amplitude of 0.55 and 0.63magnitude, respectively (U=3/3).[a][b]
According to the survey carried out by theNEOWISE mission of NASA'sWide-field Infrared Survey Explorer,Jia-xiang measures between 4.79 and 5.16 kilometers in diameter and its surface has analbedo between 0.13 and 0.2275.[5][6][7][8]
TheCollaborative Asteroid Lightcurve Link assumes an albedo of 0.20 and calculates a diameter of 4.71 kilometers based on anabsolute magnitude of 14.0.[3]
Thisminor planet was named after Chinese astronomerZhang Jiaxiang (born 1932).[1] The official naming citation was published by theMinor Planet Center on 21 November 1991 (M.P.C. 19339).[10]
