11665 Dirichlet

11665 Dirichlet
Discovery
Discovered by	P. G. Comba
Discovery site	Prescott Obs.
Discovery date	14 April 1997
Designations
MPC designation	(11665) Dirichlet
Named after	Peter Gustav Lejeune Dirichlet; (German mathematician)
Alternative designations	1997 GL28
Minor planet category	main-belt · (outer); Griqua
Orbital characteristics
	Epoch 27 April 2019 (JD 2458600.5)
	Uncertainty parameter 0
Observation arc	23.97 yr (8,756 d)
Aphelion	3.7625 AU
Perihelion	2.7963 AU
Semi-major axis	3.2794 AU
Eccentricity	0.1473
Orbital period (sidereal)	5.94 yr (2,169 d)
Mean anomaly	298.55°
Mean motion	0° 9m 57.6s / day
Inclination	15.787°
Longitude of ascending node	215.21°
Argument of perihelion	309.39°
TJupiter	3.0980
Physical characteristics
Mean diameter	6.803±0.358 km
Geometric albedo	0.087±0.014
Absolute magnitude (H)	14.1

11665 Dirichlet, provisional designation 1997 GL₂₈, is a Griqua asteroid and a 2:1 Jupiter librator from the outermost regions of the asteroid belt, approximately 6.8 kilometers (4 miles) in diameter. It was discovered on 14 April 1997, by astronomer Paul Comba at the Prescott Observatory in Arizona, United States. The asteroid was named after German mathematician Peter Gustav Lejeune Dirichlet.^[1]

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