1130 Skuld
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1130 Skuld, provisional designation Template:Mp, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 10 kilometers in diameter. It was named after Skuld from Norse mythology.[1]
Discovery
Skuld was discovered on 2 September 1929, by German astronomer Karl Reinmuth at Heidelberg Observatory in southwest Germany.[2] The body was independently discovered by astronomers and fellow countrymen Arnold Schwassmann and Arno Wachmann at the Hamburger Bergedorf Observatory ten nights later.[1]
It was first identified as Template:Mp at Heidelberg in 1906, extending the asteroid's observation arc by 23 years prior to its official discovery observation.[2]
Orbit and classification
Skuld is a member of the Flora family, one of the largest groups of stony S-type asteroids in the main-belt. It orbits the Sun in the inner main-belt at a distance of 1.8–2.7 AU once every 3 years and 4 months (1,215 days). Its orbit has an eccentricity of 0.20 and an inclination of 2° with respect to the ecliptic.[3]
Naming
This minor planet was named after Skuld, one of the three Norns in Norse mythology. The asteroids 167 Urda and 621 Werdandi are named after the other two Norns.[1] Naming citation was first mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 110Script error: No such module "Check for unknown parameters".).[1]
Physical characteristics
Rotation period
In January 2004, the first rotational lightcurves of Skuld were obtained by Henk de Groot and by a group of Polish and French astronomers. Lightcurve analysis gave a rotation period of 4.73 and 4.8079 hours with a brightness variation of 0.46 and 0.40 magnitude, respectively (U=2+/3-Script error: No such module "Check for unknown parameters".).[4][5]
In 2009 and 2011, astronomers Robert Buchheim and Larry Robinson obtained two well-defined lightcurves from photometric observations. They gave a refined period of 4.810 and 4.807 hours with an amplitude of 0.50 and 0.26 magnitude, respectively (U=3/3Script error: No such module "Check for unknown parameters".).[6]Template:Efn
Diameter and albedo
According to the surveys carried out by the Japanese Akari satellite and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Skuld measures between 9.63 and 11.009 kilometers in diameter and its surface has an albedo between 0.1995 and 0.302.[7][8][9][10] The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – derived from 8 Flora, the largest member and namesake of this orbital family – and calculates a diameter of 9.99 kilometers with an absolute magnitude of 12.17.[11]
Notes
References
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External links
- 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 (1)-(5000) – Minor Planet Center
- Template:AstDys
- Template:PAGENAMEBASE at the JPL Small-Body DatabaseTemplate:EditAtWikidata
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