Английская Википедия:1157 Arabia
1157 Arabia, provisional designation Шаблон:Mp, is an asteroid from the outer regions of the asteroid belt, approximately 29 kilometers in diameter. Astronomer Karl Reinmuth discovered it at the Heidelberg Observatory in southwest Germany on 31 August 1929.[1] The asteroid was named for the Arabian Peninsula.
Orbit and classification
Arabia is a non-family asteroid from the main belt's background population.[2] It orbits the Sun in the outer asteroid belt at a distance of 2.7–3.6 AU once every 5 years and 8 months (2,073 days). Its orbit has an eccentricity of 0.14 and an inclination of 10° with respect to the ecliptic.[3]
The body's observation arc begins at Heidelberg in December 1930, more than a year after its official discovery observation.[1]
Physical characteristics
Arabia is an assumed carbonaceous C-type asteroid,[4] while the measured albedos are rather typical for a stony composition (see below).[5][6]
Rotation period
In June 2008, Peter Caspari obtained a rotational lightcurve of Arabia from photometric observations at the BDI Observatory (Шаблон:Small) near Sydney, Australia. Lightcurve analysis gave a rotation period of 15.225 hours with a brightness amplitude of 0.37 magnitude (Шаблон:Small).Шаблон:Efn
Diameter and albedo
According to the surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Arabia measures 29.01 and 29.113 kilometers in diameter and its surface has an albedo of 0.211 and 0.247, respectively.[5][6] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous asteroids of 0.057 and calculates a much larger diameter of 55.67 kilometers based on an absolute magnitude of 10.0.[4]
Naming
This minor planet was named after the Arabian Peninsula, also known as "Arabia", in Western Asia. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (Шаблон:Small).[7]
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:Use dmy dates Шаблон:Minor planets navigator Шаблон:Small Solar System bodies
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- Английская Википедия
- Background asteroids
- Discoveries by Karl Wilhelm Reinmuth
- Named minor planets
- Astronomical objects discovered in 1929
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