Английская Википедия:941 Murray
Шаблон:Use dmy dates Шаблон:Infobox planet
941 Murray (prov. designation: Шаблон:Mp or Шаблон:Mp) is a background asteroid, approximately Шаблон:Convert in diameter, located in the central region of the asteroid belt. It was discovered by Austrian astronomer Johann Palisa at the Vienna Observatory on 10 October 1920.[1] The X-type asteroid has a short rotation period of 3.4 hours. It was named after British professor Gilbert Murray (1866–1957).[2]
Orbit and classification
Murray is a non-family asteroid of the main belt's background population when applying the hierarchical clustering method to its proper orbital elements.[3][4] It orbits the Sun in the central asteroid belt at a distance of 2.2–3.3 AU once every 4 years and 8 months (1,695 days; semi-major axis of 2.78 AU). Its orbit has an eccentricity of 0.20 and an inclination of 7° with respect to the ecliptic.[5] The body's observation arc begins at Vienna Observatory on 11 October 1920, the night after its official discovery observation.[1]
Naming
This minor planet was named after Gilbert Murray (1866–1957), British classical scholar and diplomat who helped post-war Austria in 1920 through the League of Nations. The Шаблон:MoMP was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (Шаблон:Small).[2]
Physical characteristics
In the Tholen classification, Murray is a carbonaceous C-type asteroid (CX), somewhat similar to that of an X-type, while in the Bus-Binzel SMASS classification, it is an X-type asteroid.[5][4]
Rotation period
In December 2018, a rotational lightcurve of Murray was obtained from photometric observations by the Spanish astronomer group OBAS. Lightcurve analysis gave a notably short rotation period of Шаблон:Val hours with a brightness amplitude of Шаблон:Val magnitude (Шаблон:Small).[6][7]
Diameter and albedo
According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer (WISE), Murray measures Шаблон:Val kilometers in diameter and its surface has an albedo of Шаблон:Val.[8] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for a carbonaceous asteroid of 0.057 and calculates a diameter of 27.26 kilometers based on an absolute magnitude of 11.55.[6] The WISE team also published an alternative mean-diameter Шаблон:Val with an albedo of Шаблон:Val.[6]
References
External links
- Lightcurve Database Query (LCDB), at www.minorplanet.info
- Dictionary of Minor Planet Names, Google books
- 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
- Background asteroids
- Discoveries by Johann Palisa
- Named minor planets
- CX-type asteroids (Tholen)
- X-type asteroids (SMASS)
- Astronomical objects discovered in 1920
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