1506 Xosa
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1506 Xosa, provisional designation Template:Mp, is a stony asteroid and slow rotator from the middle region of the asteroid belt, approximately 13 kilometers in diameter. It was discovered on 15 May 1939, by English-born, South African astronomer Cyril Jackson at the Johannesburg Observatory in South Africa.[1] It is named for the Xhosa people.[2]
Orbit and classification
The S-type asteroid orbits the Sun at a distance of 1.9–3.2 AU once every 4 years and 2 months (1,507 days). Its orbit has an eccentricity of 0.26 and an inclination of 13° with respect to the ecliptic.[3] XosaTemplate:'s observation arc begins with its official discovery observation, as no precoveries were taken and no prior identifications were made.[1]
Physical characteristics
Slow rotator
In Fall 2010, lightcurve photometry by Brian Warner and at the Palomar Transient Factory revealed that Xosa is a slow rotator with a notably long rotation period of 292 and 298 hours and a brightness variation of 0.70 and 0.42 magnitude, respectively (U=2+/2Script error: No such module "Check for unknown parameters".).[4][5] It also seems to be in a non-principal axis rotation (NPAR), colloquially called as "tumbling". However, observations are insufficient to determine the body's tumbling, or to rule out a non-tumbling state (T0).[4] These observations superseded previous periods obtained in 2001 and 2005 (U=1/1Script error: No such module "Check for unknown parameters".).[6][7][8]
Diameter and albedo
According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Xosa measures 13.96 kilometers in diameter and its surface has an albedo of 0.157,[9] while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 11.83 kilometers using an absolute magnitude of 12.0.[10]
Naming
This minor planet was named after the Xhosa (formerly spelled "Xosa"), a Bantu ethnic group of native people in south-east South Africa, and who came into early contact with the white settlers.[2] The official Template:MoMP was published by the Minor Planet Center in April 1953 (M.P.C. 909Script error: No such module "Check for unknown parameters".).[11]
References
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External links
- Lightcurve plot of 1506 Xosa, Palmer Divide Observatory, B. D. Warner (2001)
- Asteroid Lightcurve Database (LCDB), query form (info Script error: No such module "webarchive".)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
- Template:AstDys
- Template:PAGENAMEBASE at the JPL Small-Body DatabaseTemplate:EditAtWikidata
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