22899 Alconrad
asteroid
22899 Alconrad (provisional designation 1999 TO14) is a Koronian asteroid and binary system from the outer region of the asteroid belt, approximately 5 kilometers in diameter. It was discovered on 11 October 1999, by Croatian astronomers Korado Korlević and Mario Jurić at the Višnjan Observatory, Croatia.
When its minor-planet moon was discovered in 2003, it was the smallest known main-belt asteroid to possess a satellite. It was later named after American astronomer Albert R. Conrad.
Classification and orbit
Alconrad belongs to the Koronis family, a collisional group of stony asteroids consisting of a few hundred known bodies with nearly ecliptical orbits. It orbits the Sun in the outer main-belt at a distance of 2.6–3.1 AU once every 4 years and 10 months (1,752 days). Its orbit has an eccentricity of 0.08 and an inclination of 3° with respect to the ecliptic. The body's observation arc begins 5 years prior to its official discovery observation, with a precovery taken by Steward Observatory's Spacewatch program in October 1994.
Physical characteristics
Rotation period
In December 2009, a rotational lightcurve of Alconrad was obtained from photometric observations at the ground-based Wise Observatory in Mitzpe Ramon, Israel. Lightcurve analysis gave a rotation period of 4.03 hours with a brightness variation of 0.19 magnitude (U=2).
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This entry incorporates text from “22899 Alconrad” 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.