2893 Peiroos
asteroid
2893 Peiroos is a large Jupiter trojan from the Trojan camp, approximately 87 kilometers (54 miles) in diameter. It was discovered on 30 August 1975, by astronomers of the Felix Aguilar Observatory at the Leoncito Astronomical Complex in Argentina. The D-type asteroid has a rotation period of 8.96 hours and belongs to the 40 largest Jupiter trojans. It was named after Peiroos (Peirous) from Greek mythology.
Orbit and classification
Peiroos is a dark Jovian asteroid orbiting in the trailing Trojan camp at Jupiter's L5 Lagrangian point, 60° behind its orbit in a 1:1 resonance (see Trojans in astronomy). It is a non-family asteroid in the Jovian background population. It orbits the Sun at a distance of 4.8–5.5 AU once every 11 years and 8 months (4,269 days; semi-major axis of 5.15 AU). Its orbit has an eccentricity of 0.08 and an inclination of 15° with respect to the ecliptic.
The body's observation arc begins with its first observation as 1933 BJ at Heidelberg Observatory in January 1933, more than 42 years prior to its official discovery observation at Leoncito.
Physical characteristics
In the Tholen classification, Peiroos has been characterized as a dark D-type asteroid.
“2893 Peiroos” enters the record as asteroid. Crown Archives preserves that source wording while asking what Peiroos and asteroid can confirm, complicate or overturn.
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This entry incorporates text from “2893 Peiroos” 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.