3960 Chaliubieju
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3960 Chaliubieju, provisional designation Template:Mp, is a stony asteroid from the central regions of the asteroid belt, approximately 9 kilometers in diameter. It was discovered on 20 January 1955, by astronomers at the Purple Mountain Observatory in Nanjing, China.[1] The asteroid was named after Cha Liubieju, a friend of one of the discoverers.[2]
Orbit and classification
Chaliubieju is an asteroid of the main belt's background population that does not belong to any known asteroid family. It orbits the Sun in the central main-belt at a distance of 1.9–3.4 AU once every 4 years and 3 months (1,568 days). Its orbit has an eccentricity of 0.28 and an inclination of 14° with respect to the ecliptic.[3]
The asteroid was first identified as Template:Mp at Bergedorf Observatory in March 1921. The body's observation arc begins at Nanjing, two days after its official discovery observation.[1]
Physical characteristics
Chaliubieju is an assumed S-type asteroid.[4]
Rotation period
In February 2011, a rotational lightcurve of Chaliubieju was obtained French amateur astronomer Pierre Antonini. Lightcurve analysis gave a rotation period of 3.986 hours with a brightness variation of 0.27 magnitude (U=3Script error: No such module "Check for unknown parameters".).[5] One month later another photometric observation at the Astronomical Research Observatory (H21Script error: No such module "Check for unknown parameters".) gave a concurring period of 3.984 hours and an amplitude of 0.30 magnitude (U=3-Script error: No such module "Check for unknown parameters".).[6]
Diameter and albedo
According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Chaliubieju measures between 7.13 and 9.00 kilometers in diameter and its surface has an albedo between 0.288 and 0.34,[7][8][9] while the Collaborative Asteroid Lightcurve Link assumes an albedo of 0.10 and calculates a diameter of 14.57 kilometers based on an absolute magnitude of 12.3.[4]
Naming
This minor planet was named after Cha Liubieju, a friend of one of the discovering astronomers at the Purple Mountain Observatory. Liubieju is noted for her social work with sick and destitute mothers and children in China.[2] The official naming citation was published by the Minor Planet Center on 5 October 1998 (M.P.C. 32787Script error: No such module "Check for unknown parameters".).[10]
References
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External links
- 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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