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2146 Stentor

Minor planet

Field	Value
minorplanet	yes
name	2146 Stentor
background	#C2FFFF
discovery_ref
discoverer	R. M. West
discovery_site	La Silla Obs.
discovered	24 October 1976
mpc_name	(2146) Stentor
alt_names	1976 UQ
adjective	Stentorian
pronounced
named_after	Stentor
(Greek mythology)
mp_category	Jupiter trojan
Greekbackground
orbit_ref
epoch	23 March 2018 (JD 2458200.5)
uncertainty	0
observation_arc	40.93 yr (14,949 d)
aphelion	5.7217 AU
perihelion	4.6714 AU
semimajor	5.1965 AU
eccentricity	0.1011
period	11.85 yr (4,327 d)
mean_anomaly	238.48°
mean_motion	/ day
inclination	39.261°
asc_node	131.32°
arg_peri	273.11°
jupiter_moid	0.0831 AU
tisserand	2.5410
mean_diameter
(calculated)
rotation
albedo	(assumed)

spectral_type	C (assumed)
abs_magnitude	9.8
9.9

(Greek mythology) Greekbackground (calculated)

9.9

2146 Stentor is a Jupiter trojan from the Greek camp, approximately 51 km in diameter. It was discovered on 24 October 1976, by Danish astronomer Richard Martin West at the ESO's La Silla Observatory in Chile. The dark Jovian asteroid has a rotation period of 16.4 hours and belongs to the 100 largest Jupiter trojans. It was named after Stentor from Greek mythology, a Herald of the Greeks during the Trojan War.

Orbit and classification

Stentor is a Jovian asteroid orbiting in the leading Greek camp at Jupiter's Lagrangian point, 60° ahead of the gas giant's orbit in a 1:1 resonance . It is a non-family asteroid in the Jovian background population.

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. The body's observation arc begins with its official discovery observation at La Silla in October 1976.

Physical characteristics

Stentor is an assumed C-type asteroid.

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 hours with a brightness amplitude of 0.10 magnitude (). An alternative period solution (1:1.5 alias of 24.88 was also obtained.

Stentor was previously observed at CS3 by Daniel Coley and Robert Stephens in February 2013, gave an alternative period solution of hours with an amplitude of 0.09 magnitude. This approximately a 1:2 alias is now superseded by the shorter period above ().

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, 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.

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. The official was published by the Minor Planet Center on 1 July 1979 (M.P.C. 4788).

Notes

References

"stentor". [[Oxford University Press]].

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

jupiter-trojans-(greek-camp) discoveries-by-richard-martin-west named-minor-planets astronomical-objects-discovered-in-1976

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