Английская Википедия:15436 Dexius
Шаблон:Short description Шаблон:Use dmy dates Шаблон:Infobox planet
15436 Dexius, provisional designation: Шаблон:Mp, is a large Jupiter trojan from the Greek camp, approximately Шаблон:Convert in diameter. It was discovered on 10 November 1998, by astronomers of the Lincoln Near-Earth Asteroid Research at the Lincoln Laboratory's Experimental Test Site near Socorro, New Mexico.[1] The presumed C-type asteroid has a rotation period of 8.97 hours.[2] It is one of the 50 largest Jupiter trojans and was named after Dexius, father of Iphinous from Greek mythology.[1][3] [4]
Orbit and classification
Dexius is a dark Jovian asteroid orbiting in the leading Greek camp at Jupiter's Шаблон:L4 Lagrangian point, 60° ahead of its orbit in a 1:1 resonance (see Trojans in astronomy). It is a non-family asteroid in the Jovian background population.[5][6] It orbits the Sun at a distance of 5.0–5.4 AU once every 11 years and 11 months (4,344 days; semi-major axis of 5.21 AU). Its orbit has an eccentricity of 0.04 and an inclination of 16° with respect to the ecliptic.[7]
The body's observation arc begins with its first observation as Шаблон:Mp at the Goethe Link Observatory in November 1962, or 36 years prior to its official discovery observation at Socorro.[1]
Numbering and naming
This minor planet was numbered on 21 June 2000 (Шаблон:Small).[8] On 14 May 2021, the object was named by the Working Group for Small Bodies Nomenclature (WGSBN), after Dexius, father of Iphinous from Greek mythology.[4]
Physical characteristics
Dexius is a generically assumed C-type asteroid.[2]
Rotation period
In 2013 and 2014, two rotational lightcurves of Dexius were obtained from photometric observations by Robert Stephens at the Trojan Station of Center for Solar System Studies Шаблон:Obscode in Landers, California. Lightcurve analysis gave an identical rotation period of 8.97 hours with a brightness amplitude of 0.15 and 0.29 magnitude, respectively (Шаблон:Small).[2][9][10]Шаблон:EfnШаблон:Efn
Diameter and albedo
According to the surveys carried out by the Japanese Akari satellite, the Infrared Astronomical Satellite IRAS, and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer (WISE), this Jovian trojan measures between 78.63 and 87.65 kilometers in diameter and its surface has an albedo between 0.038 and 0.053.[11][12][13] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0547 and a diameter of 86.00 kilometers based on an absolute magnitude of 9.1.
Шаблон:Largest Jupiter trojans
Notes
References
External links
- Asteroid Lightcurve Database (LCDB), query form (info Шаблон:Webarchive)
- Center for Solar System Studies (CS3)
- Discovery Circumstances: Numbered Minor Planets (15001)-(20000) – Minor Planet Center
- Шаблон:AstDys
- Шаблон:JPL small body
Шаблон:Minor planets navigator Шаблон:Small Solar System bodies
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- Английская Википедия
- Jupiter trojans (Greek camp)
- Background asteroids
- Discoveries by LINEAR
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- Astronomical objects discovered in 1998
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