5656 Oldfield

5656 Oldfield
Discovery
Discovered by	W. Baade
Discovery site	Bergedorf Obs.
Discovery date	8 October 1920
Designations
MPC designation	(5656) Oldfield
Named after	Mike Oldfield ; (English musician)
Alternative designations	A920 TA · 1978 WW18; 1981 JZ5
Minor planet category	main-belt · (inner); background
Orbital characteristics
	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
Semi-major axis	2.4594 AU
Eccentricity	0.2636
Orbital period (sidereal)	3.86 yr (1,409 d)
Mean anomaly	125.66°
Mean motion	0° 15m 19.8s / day
Inclination	4.0144°
Longitude of ascending node	248.67°
Argument of perihelion	83.725°
Physical characteristics
Mean diameter	7.691±0.051 km
Geometric albedo	0.075±0.009
Absolute magnitude (H)	14.1

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]

Orbit and classification

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]

Physical characteristics

Diameter and albedo

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]

Rotation period

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]

Naming

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]

References

^ ^a ^b ^c ^d ^e ^f "5656 Oldfield (A920 TA)". Minor Planet Center. Retrieved 10 April 2018.
^ ^a ^b ^c ^d ^e "JPL Small-Body Database Browser: 5656 Oldfield (A920 TA)" (2018-01-23 last obs.). Jet Propulsion Laboratory. Retrieved 10 April 2018.
^ ^a ^b "Asteroid 5656 Oldfield – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. Retrieved 29 October 2019.
^ ^a ^b ^c Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Dailey, J.; et al. (November 2011). "Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters". The Astrophysical Journal. 741 (2): 20. arXiv:1109.4096. Bibcode:2011ApJ...741...68M. doi:10.1088/0004-637X/741/2/68. Retrieved 10 April 2018.
^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 10 April 2018.

External links

Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
Dictionary of Minor Planet Names, Google books
Discovery Circumstances: Numbered Minor Planets (5001)-(10000) – Minor Planet Center
5656 Oldfield at AstDyS-2, Asteroids—Dynamic Site
- Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
5656 Oldfield at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

Zdroj:https://en.wikipedia.org?pojem=5656_Oldfield
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[MPC-object-1] ^ ^a ^b ^c ^d ^e ^f "5656 Oldfield (A920 TA)". Minor Planet Center. Retrieved 10 April 2018.

[jpldata-2] "JPL Small-Body Database Browser: 5656 Oldfield (A920 TA)" (2018-01-23 last obs.). Jet Propulsion Laboratory. Retrieved 10 April 2018.

[AstDys-object-3] "Asteroid 5656 Oldfield – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. Retrieved 29 October 2019.

[Masiero-2011-4] Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Dailey, J.; et al. (November 2011). "Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters". The Astrophysical Journal. 741 (2): 20. arXiv:1109.4096. Bibcode:2011ApJ...741...68M. doi:10.1088/0004-637X/741/2/68. Retrieved 10 April 2018.

[MPC-Circulars-Archive-5] "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 10 April 2018.

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