9983 Rickfienberg
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9983 Rickfienberg (prov. designation: Template:Mp) is a carbonaceous asteroid from the middle region of the asteroid belt, approximately Script error: No such module "convert". in diameter. It was discovered on 19 February 1995, by American astronomer Dennis di Cicco at his private Sudbury Observatory Template:Obscode, Massachusetts, United States.[1] It was named after American astronomer and editor Richard Fienberg.[2]
Orbit and classification
Rickfienberg is a non-family asteroid of the main belt's background population when applying the hierarchical clustering method to its proper orbital elements. The dark C-type asteroid orbits the Sun in the central main-belt at a distance of 2.4–3.0 AU once every 4 years and 5 months (1,627 days). Its orbit has an eccentricity of 0.12 and an inclination of 8° with respect to the ecliptic.[3] The first observation was taken at the Australian Siding Spring Observatory in 1987, extending the asteroid's observation arc by 8 years prior to its discovery.[1]
Naming
This minor planet was named for Richard Tresch Fienberg (born 1956) an American astronomer at Rice and Harvard universities, and a stargazer at his private observatory near Danbury, New Hampshire. He is also an editor of the American amateur astronomer magazine Sky & Telescope, after which the minor planet 3243 Skytel is named.[2] The Template:MoMP was published by the Minor Planet Center on 1 May 2003 (M.P.C. 48389Script error: No such module "Check for unknown parameters".).[4]
Physical characteristics
Lightcurve
During the asteroid's opposition in November 2011, a rotational lightcurve was obtained from photometric observations at Kitt Peak Observatory. It gave a well-defined rotation period of Script error: No such module "val". hours with a high brightness variation of 1.3 in magnitude (U=3Script error: No such module "Check for unknown parameters".), typically indicating a non-spheroidal shape.[5] This period was also confirmed by remodeled data from the Lowell photometric database in March 2016.[6]
Diameter and albedo
According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Rickfienberg measures 7.4 kilometers in diameter and its surface has an albedo of 0.17,[7][8] while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous asteroids of 0.057 and calculates a diameter of 12.2 kilometers, as the lower the body's albedo (reflectivity), the larger its diameter, at a constant absolute magnitude (brightness).[9]
References
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External links
- Richard Tresch Fienberg, Sky & Telescope, 18 July 2006
- My Place in the Dark, by Richard Tresch Fienberg, Sky & Telescope,17 July 2006
- Lightcurve Database Query (LCDB), at www.minorplanet.info
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Geneva Observatory, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (5001)-(10000) – Minor Planet Center
- Template:AstDys
- Template:PAGENAMEBASE at the JPL Small-Body DatabaseTemplate:EditAtWikidata
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