5120 Bitias
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5120 Bitias Template:IPAc-en is a Jupiter trojan from the Trojan camp, approximately Script error: No such module "convert". in diameter. It was discovered on 13 October 1988, by American astronomer Carolyn Shoemaker at the Palomar Observatory in California.[1] The assumed C-type asteroid has a rotation period of 15.2 hours. It was named after Bitias, a companion of Aeneus in Virgil's Aeneid.[1]
Orbit and classification
Bitias is a dark Jovian asteroid in a 1:1 orbital resonance with Jupiter. It is located in the trailing Trojan camp at the Gas Giant's Template:L5 Lagrangian point, 60° behind on its orbit Template:Crossreference.[2] It is also a non-family asteroid of the Jovian background population.[3]
It orbits the Sun at a distance of 4.7–5.9 AU once every 12 years and 1 month (4,426 days; semi-major axis of 5.28 AU). Its orbit has an eccentricity of 0.11 and an inclination of 25° with respect to the ecliptic.[4] The body's observation arc begins with its first observation at Palomar in September 1988, just one month prior to its official discovery observation.[1]
Physical characteristics
Bitias is an assumed, carbonaceous C-type asteroid. It has a low V–I color index of 0.78.[5]
Rotation period
In March 1993, a rotational lightcurve of Bitias was obtained from photometric observations over four consecutive nights by Stefano Mottola using the ESO 1-metre telescope at La Silla Observatory in Chile. Lightcurve analysis gave a rotation period of 11.582 hours with a brightness variation of at least 0.38 magnitude (U=2Script error: No such module "Check for unknown parameters".).[5][6]
In August 2013, a more refined period determination from observations over seven consecutive nights by Robert Stephens at the Center for Solar System Studies gave a well-defined period of Script error: No such module "val". hours with an amplitude of 0.32 magnitude (U=3Script error: No such module "Check for unknown parameters".).[7]Template:Efn
Diameter and albedo
According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Bitias measures between 47.987 and 47.99 kilometers in diameter and its surface has an albedo,[8] while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for a carbonaceous asteroid of 0.057 and calculates a diameter of 50.77 kilometers based on an absolute magnitude of 10.2.[5]
Template:Largest Jupiter trojans
Naming
This minor planet was named by the discoverer from Greek mythology after the Trojan warrior Bitias. He survived the Trojan War and was a companion in Aeneas' exile. He was later killed in Italy with a whirling pike during the Latin War.[1] The official naming citation was published by the Minor Planet Center on 4 June 1993 (M.P.C. 22248Script error: No such module "Check for unknown parameters".).[9]
Notes
References
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External links
- Asteroid Lightcurve Database (LCDB), query form (info Template:Webarchive)
- Dictionary of Minor Planet Names, Google books
- Discovery Circumstances: Numbered Minor Planets (5001)-(10000) – Minor Planet Center
- Asteroid 5120 Bitias at the Small Bodies Data Ferret
- Template:AstDys
- Template:PAGENAMEBASE at the JPL Small-Body DatabaseTemplate:EditAtWikidata
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