2449 Kenos

2449 Kenos
Discovery
Discovered by	W. Liller
Discovery site	Cerro Tololo
Discovery date	8 April 1978
Designations
MPC designation	(2449) Kenos
Named after	Kenos (Selknam mythology)
Alternative designations	1978 GC
Minor planet category	Mars-crosser · Hungaria · binary
Orbital characteristics
	Epoch 4 September 2017 (JD 2458000.5)
	Uncertainty parameter 0
Observation arc	38.93 yr (14,220 days)
Aphelion	2.2303 AU
Perihelion	1.5872 AU
Semi-major axis	1.9088 AU
Eccentricity	0.1685
Orbital period (sidereal)	2.64 yr (963 days)
Mean anomaly	258.57°
Mean motion	0° 22m 25.32s / day
Inclination	24.986°
Longitude of ascending node	179.86°
Argument of perihelion	102.25°
Physical characteristics
Dimensions	2.95 km (calculated)
Synodic rotation period	3.846±0.001 h; 3.8481±0.0003 h; 3.8492±0.0008 h; 4.188±0.007 h
Geometric albedo	0.4 (assumed)
Spectral type	Tholen = E · CX · E ; B–V = 0.684; U–B = 0.356
Absolute magnitude (H)	14.07±0.09 · 14.26 · 14.46±0.48

2449 Kenos, provisional designation 1978 GC, is a bright Hungaria asteroid and medium-sized Mars-crosser from the inner regions of the asteroid belt, approximately 3 kilometers in diameter. It was discovered by American astronomer William Liller at Cerro Tololo Inter-American Observatory in Chile, on 8 April 1978, and named after Kenos from Selknam mythology.^[2]^[3] A minor-planet moon was discovered around the asteroid on 27 February 2015.^[10]

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