1837 Osita
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1837 Osita (prov. designation: Template:Mp) is a stony Flora asteroid from the inner regions of the asteroid belt, approximately 7 kilometers in diameter. It was discovered on 16 August 1971, by American astronomer James Gibson at the Yale–Columbia Southern Station of the Leoncito Astronomical Complex in Argentina, who named it after his wife Ursula ("Osita").[1]
Orbit and classification
The S-type asteroid is a member of the Flora family, one of the largest groups of stony asteroids in the main-belt. It orbits the Sun in the inner main-belt at a distance of 2.0–2.4 AU once every 3 years and 3 months (1,196 days). Its orbit has an eccentricity of 0.09 and an inclination of 4° with respect to the ecliptic.[2] Osita was first identified as Template:Mp at Goethe Link Observatory in 1962, extending the body's observation arc by 9 years prior to its official discovery observation.[1]
Physical characteristics
PanSTARRSTemplate:'s large-scale survey also classified Osita as a rare AQ-type, having intermediate spectral characteristics of an A and Q type asteroid.[3]
Rotation period
In February 2006, a rotational lightcurve of Osita was obtained from photometric observation by French amateur astronomer René Roy, giving a well-defined rotation period of 3.81880 hours with a brightness variation of 0.48 magnitude (U=3Script error: No such module "Check for unknown parameters".).[4] Photometric observations in the R-band at the Palomar Transient Factory in October 2011, gave a concurring period of 3.8186 hours and an amplitude of 0.59 magnitude (U=2Script error: No such module "Check for unknown parameters".).[5] A third period of 3.81880 hours was derived from a large international data-mining collaboration in February 2016 (U=n.a.Script error: No such module "Check for unknown parameters".).[6]
Diameter and albedo
According to the surveys carried out by the Japanese Akari satellite and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Osita measures between 7.53 and 7.94 kilometers in diameter, and its surface has an albedo between 0.194 and 0.216.[7][8][9][10]
The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – derived from 8 Flora, the largest member and namesake of this orbital family – and calculates a diameter of 7.14 kilometers with an absolute magnitude of 12.9.[11]
Naming
This minor planet was named by the discoverer for his wife Ursula ("Osita" is the Spanish equivalent). She volunteered as an assistant and actively participated in the observations by measuring or reducing more than 150 positions of comets and minor planets.[12] The official Template:MoMP was published by the Minor Planet Center on 20 February 1976 (M.P.C. 3935Script error: No such module "Check for unknown parameters".).[13]
References
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External links
- Asteroid Lightcurve Database (LCDB), query form (info Template: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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