1955 McMath
asteroid
1955 McMath, provisional designation 1963 SR, is a stony Koronis asteroid from the outer region of the asteroid belt, approximately 10 kilometers in diameter.
It was discovered on 22 September 1963, by Indiana University's Indiana Asteroid Program at its Goethe Link Observatory near Brooklyn, Indiana, United States. It was later named after solar astronomer Robert Raynolds McMath.
Orbit and classification
McMath is a stony S-type asteroid and a member of the Koronis family, which is named after 158 Koronis and consists of about 300 known bodies. It orbits the Sun in the outer main-belt at a distance of 2.7–3.0 AU once every 4 years and 10 months (1,762 days). Its orbit has an eccentricity of 0.06 and an inclination of 1° with respect to the ecliptic. The first precovery was taken at Goethe Link Observatory in 1949, extending the asteroid's observation arc by 15 years prior to its discovery. The first (unused) observation at Uccle Observatory dates back to 1936.
Physical characteristics
Rotation period
It has a well determined rotation period of 5.574±0.002 hours with a brightness amplitude of 0.30 in magnitude (U=3). Between 2011 and 2013, three additional lightcurves with concurring periods of McMath with an amplitude between 0.32 and 0.39 magnitude were obtained through photometric observations in the R- and S-band at the U.S. Palomar Transient Factory in California (U=2/3-/2).
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This entry incorporates text from “1955 McMath” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.