Discovery [1] | |
---|---|
Discovered by | W. Baade |
Discovery site | Bergedorf Obs. |
Discovery date | 8 October 1920 |
Designations | |
(5656) Oldfield | |
Named after |
Mike Oldfield
[1] (English musician) |
A920 TA · 1978 WW18 1981 JZ5 | |
main-belt
[1]
[2] · (
inner) background [3] | |
Orbital characteristics [2] | |
Epoch 23 March 2018 ( JD 2458200.5) | |
Uncertainty parameter 0 | |
Observation arc | 97.29 yr (35,536 d) |
Aphelion | 3.1076 AU |
Perihelion | 1.8111 AU |
2.4594 AU | |
Eccentricity | 0.2636 |
3.86 yr (1,409 d) | |
125.66 ° | |
0° 15m 19.8s / day | |
Inclination | 4.0144° |
248.67° | |
83.725° | |
Physical characteristics | |
Mean diameter | 7.691±0.051 km [4] |
0.075±0.009 [4] | |
14.1 [2] | |
5656 Oldfield, provisional designation A920 TA, is a background asteroid from the inner regions of the asteroid belt, approximately 7.7 kilometers (4.8 miles) in diameter. It was discovered on 8 October 1920, by astronomer Walter Baade at the Bergedorf Observatory in Hamburg, Germany. The asteroid was named for English musician Mike Oldfield. [1]
Oldfield is a non- family asteroid of the main belt's background population. [3] It orbits the Sun in the inner main-belt at a distance of 1.8–3.1 AU once every 3 years and 10 months (1,409 days; semi-major axis of 2.46 AU). Its orbit has an eccentricity of 0.26 and an inclination of 4 ° with respect to the ecliptic. [2]
The body's observation arc begins at Bergedorf two nights after its official discovery observation. [1]
According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Oldfield measures 7.691 kilometers in diameter and its surface has an albedo of 0.075. [4]
As of 2018, no rotational lightcurve of Oldfield has been obtained from photometric observations. The body's rotation period, poles and shape remain unknown. [2]
This minor planet was named after English composer and multi-instrumentalist Mike Oldfield (born 1953), creator of the famed Tubular Bells albums. [1] The official naming citation was proposed by Gareth V. Williams and published by the Minor Planet Center on 25 April 1994 ( M.P.C. 23353). [5]