1996 PW

1996 PW
	Discovery images of 1996 PW from NEAT-GEODSS in August 1996
Discovery
Discovered by	NEAT
Discovery site	Haleakala Obs.
Discovery date	9 August 1996
Designations
MPC designation	1996 PW
Minor planet category	TNO · damocloid; distant · unusual
Orbital characteristics
	Epoch 27 April 2019 (JD 2458600.5)
	Uncertainty parameter 2
Observation arc	1.39 yr (506 d)
Aphelion	504.23 AU
Perihelion	2.4933 AU
Semi-major axis	253.36 AU
Eccentricity	0.9902
Orbital period (sidereal)	4033 yr (1,473,017 d)
Mean anomaly	2.0281°
Mean motion	0° 0m 0.72s / day
Inclination	29.956°
Longitude of ascending node	144.38°
Argument of perihelion	181.60°
TJupiter	1.7130
Physical characteristics
Mean diameter	7 km; 8 km (est. at 0.15); 15 km (est. at 0.04)
Synodic rotation period	35.44 h
Spectral type	Ld (SMASS); D; B–R = 0.56±0.04; V–I = 1.03±0.06; V–J = 1.80±0.05; V–H = 2.19±0.05; V–K = 2.32±0.05
Absolute magnitude (H)	14.0

1996 PW is an exceptionally eccentric trans-Neptunian object and a damocloid on an orbit typical of long-period comets but one that showed no sign of cometary activity around the time it was discovered. The unusual object measures approximately 10 kilometers (6 miles) in diameter and has a rotation period of 35.4 hours and likely an elongated shape.