Английская Википедия:2146 Stentor
2146 Stentor Шаблон:IPAc-en is a Jupiter trojan from the Greek camp, approximately Шаблон:Convert in diameter. It was discovered on 24 October 1976, by Danish astronomer Richard Martin West at the ESO's La Silla Observatory in Chile.[1] The dark Jovian asteroid has a rotation period of 16.4 hours and belongs to the 100 largest Jupiter trojans.[2] It was named after Stentor from Greek mythology, a Herald of the Greeks during the Trojan War.[1]
Orbit and classification
Stentor is a Jovian asteroid orbiting in the leading Greek camp at Jupiter's Шаблон:L4 Lagrangian point, 60° ahead of the gas giant's orbit in a 1:1 resonance Шаблон:Cross reference.[3] It is a non-family asteroid in the Jovian background population.[4]
It orbits the Sun at a distance of 4.7–5.7 AU once every 11 years and 10 months (4,327 days; semi-major axis of 5.2 AU). Its orbit has an eccentricity of 0.10 and an inclination of 39° with respect to the ecliptic.[5] The body's observation arc begins with its official discovery observation at La Silla in October 1976.[1]
Physical characteristics
Stentor is an assumed C-type asteroid.[2]
Rotation period
In June 2016, a rotational lightcurve of Stentor was obtained from photometric observations by Brian Warner at the Center for Solar System Studies (CS3) in California. Lightcurve analysis gave a rotation period of Шаблон:Val hours with a brightness amplitude of 0.10 magnitude (Шаблон:Small). An alternative period solution (1:1.5 alias of 24.88 was also obtained.[2][6]Шаблон:Efn
Stentor was previously observed at CS3 by Daniel Coley and Robert Stephens in February 2013, gave an alternative period solution of Шаблон:Val hours with an amplitude of 0.09 magnitude. This approximately a 1:2 alias is now superseded by the shorter period above (Шаблон:Small).[7]
Diameter and albedo
According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Stentor measures 50.76 kilometers in diameter and its surface has an albedo 0.082,[8] while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for a carbonaceous asteroid of 0.057 and calculates a diameter of 58.29 kilometers based on an absolute magnitude of 9.9.[2]
Шаблон:Largest Jupiter trojans
Naming
This minor planet was named from Greek mythology after Stentor, the Greek warrior and herald with a voice as loud as fifty men together.[1] The official Шаблон:MoMP was published by the Minor Planet Center on 1 July 1979 (Шаблон:Small).[9]
Notes
References
External links
- Asteroid Lightcurve Database (LCDB), query form (info Шаблон:Webarchive)
- Dictionary of Minor Planet Names, Google books
- Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
- Small Bodies Data Ferret at the Asteroid 2146 Stentor
- Шаблон:AstDys
- Шаблон:JPL small body
Шаблон:Use dmy dates Шаблон:Minor planets navigator Шаблон:Small Solar System bodies
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- Discoveries by Richard Martin West
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