3288 Seleucus
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3288 Seleucus, provisional designation Template:Mp, is a rare-type stony asteroid, classified as near-Earth object of the Amor group of asteroids, approximately 2.5 kilometers in diameter. It was discovered on 28 February 1982, by German astronomer Hans-Emil Schuster at ESO's La Silla Observatory site in northern Chile.[1] It was named after the Hellenistic general and Seleucid ruler Seleucus I Nicator.[2]
Orbit
Seleucus orbits the Sun in the inner main-belt at a distance of 1.1–3.0 AU once every 2 years and 11 months (1,059 days). Its orbit has an eccentricity of 0.46 and an inclination of 6° with respect to the ecliptic.[3] Seleucus has an Earth minimum orbital intersection distance of Script error: No such module "convert"., which corresponds to 40.1 lunar distances.[3] As no precoveries were taken, and no prior identifications were made, the body's observation arc begins with its official discovery observation at La Silla.[1]
Physical parameters
Spectral type
On the Tholen and SMASS taxonomic scheme, Seleucus is classified as a featureless S-type and rare K-type asteroid, respectively.[3]
Rotation period
It has a relatively long rotation period of 75 hours with a brightness variation of 1.0 magnitude, indicative of a non-spheroidal shape (U=3/3Script error: No such module "Check for unknown parameters".).[4][5] While most minor planets have spin rate between 2 and 20 hours, Seleucus still rotates faster than a typical slow rotator, which have periods above 100 hours.
Diameter and albedo
According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Seleucus measures 2.49 and 2.83 kilometers in diameter, and its surface has an albedo of 0.139 and 0.24, respectively.[6][7] The Collaborative Asteroid Lightcurve Link adopts an albedo of 0.23 and a diameter of 2.2 kilometers, based on modeled data by Alan Harris.[8][9]
Naming
This minor planet is named for Seleucus I Nicator, a general in the army of Alexander the Great, and, after the death of Alexander, founder and king of the Seleucid Empire.[2] The approved naming citation was published by the Minor Planet Center on 29 September 1985 (M.P.C. 10046Script error: No such module "Check for unknown parameters".).[10]
See also
- Seleucus (crater), a lunar crater
References
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External links
- Asteroid Lightcurve Database (LCDB), query form (info Script error: No such module "webarchive".)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Template:NeoDys
- Template:ESA-SSA
- Template:PAGENAMEBASE at the JPL Small-Body DatabaseTemplate:EditAtWikidata
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