Английская Википедия:3401 Vanphilos
Шаблон:Use dmy dates Шаблон:Infobox planet
3401 Vanphilos, provisional designation Шаблон:Mp, is a stony, eccentric asteroid and sizeable Mars-crosser, approximately 7 kilometers in diameter. It was discovered on 1 August 1981, by and at Harvard's Oak Ridge Observatory (Agassiz Station) in Massachusetts, United States.[1]
Orbit and classification
Vanphilos orbits the Sun in the inner main-belt at a distance of 1.5–3.2 AU once every 3 years and 8 months (1,330 days). Its orbit has an eccentricity of 0.36 and an inclination of 22° with respect to the ecliptic.[2] In 1946, it was first identified as Шаблон:Mp at the Finnish Turku Observatory, extending the body's observation arc by 35 years prior to its official discovery at Harvard.[1]
Physical characteristics
In the SMASS taxonomy, Vanphilos is characterized as a common S-type asteroid.[2]
Rotation period
In February and March 2008, three rotational lightcurves of Vanphilos were obtained from photometric observations by astronomers Petr Pravec, James W. Brinsfield and Robert Stephens. Light-curve analysis gave a well defined rotation period of 4.225 and 4.226 hours, respectively, with a change in brightness between 0.50 and 0.54 magnitude (Шаблон:Small).[3][4]Шаблон:Efn
In August 2014, astronomer Brian Warner derived a concurring period of 4.227 hours with an amplitude of 0.62 magnitude from his observations taken at the Palmer Divide Station in Colorado (Шаблон:Small).[5] Light-curve plots were published on-line by the Ondřejov Observatory and the Center for Solar System Studies.Шаблон:EfnШаблон:Efn
Diameter and albedo
According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Vanphilos measures 7.02 and 7.10 kilometers in diameter, and its surface has an albedo of 0.377 and 0.31, respectively.[6][7] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 10.30 kilometers, as the lower the body's albedo (reflectivity), the larger its diameter, at a constant absolute magnitude.[8]
Naming
This minor planet was named for Vanessa Hall and Philip Osborne, by astronomer G. V. William to celebrate their marriage on 3 August 1991.[9] The approved naming citation was published by the Minor Planet Center on 25 August 1991 (Шаблон:Small).[10]
Notes
References
External links
- Asteroid Lightcurve Database (LCDB), query form (info Шаблон: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
- Шаблон:AstDys
- Шаблон:JPL small body
Шаблон:Minor planets navigator Шаблон:Small Solar System bodies Шаблон:Authority control
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- Английская Википедия
- Mars-crossing asteroids
- Discoveries by the Harvard College Observatory
- Named minor planets
- S-type asteroids (SMASS)
- Astronomical objects discovered in 1981
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