(19308) 1996 TO66

(19308) 1996 TO₆₆
	Hubble Space Telescope image of 1996 TO66 taken in 2005
Discovery
Discovered by	Chadwick Trujillo; David Jewitt; Jane Luu;
Discovery date	12 October 1996
Designations
MPC designation	(19308) 1996 TO66
Minor planet category	Haumeid; TNO; intermittent 11:19 resonance?;
Orbital characteristics
	Epoch 13 January 2016 (JD 2457400.5)
	Uncertainty parameter 3
Observation arc	7322 days (20.05 yr)
Aphelion	48.375 AU (7.2368 Tm)
Perihelion	37.939 AU (5.6756 Tm)
Semi-major axis	43.157 AU (6.4562 Tm)
Eccentricity	0.12090
Orbital period (sidereal)	283.52 yr (103,555 d)
Mean anomaly	137.16°
Mean motion	0° 0m 12.515s / day
Inclination	27.4948°
Longitude of ascending node	355.2889°
Argument of perihelion	239.07°
Earth MOID	37.0117 AU (5.53687 Tm)
Jupiter MOID	33.0091 AU (4.93809 Tm)
Physical characteristics
Dimensions	200 km (assuming a Haumea-like albedo of 0.7); (<902km);
Synodic rotation period	7.92 h (0.330 d)
Sidereal rotation period	7.92 h
Geometric albedo	0.7 (assumed)
Temperature	~43 K
Spectral type	Neutral; B−V = 0.68, V−R = 0.39; B−V = 0.74, V−R = 0.38;
Absolute magnitude (H)	4.5

(19308) 1996 TO₆₆ (provisional designation 1996 TO₆₆) is a trans-Neptunian object that was discovered in 1996 by Chadwick Trujillo, David Jewitt and Jane Luu. Until 20000 Varuna was discovered, it was the second-largest known object in the Kuiper belt, after Pluto.

Discovery
Hubble Space Telescope image of 1996 TO₆₆ taken in 2005
Discovered by	Chadwick Trujillo David Jewitt Jane Luu
Discovery date	12 October 1996
Designations
MPC designation	(19308) 1996 TO₆₆
Minor planet category	Haumeid TNO intermittent 11:19 resonance?
Orbital characteristics
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 3
Observation arc	7322 days (20.05 yr)
Aphelion	48.375 AU (7.2368 Tm)
Perihelion	37.939 AU (5.6756 Tm)
Semi-major axis	43.157 AU (6.4562 Tm)
Eccentricity	0.12090
Orbital period (sidereal)	283.52 yr (103,555 d)
Mean anomaly	137.16°
Mean motion	0° 0^m 12.515^s / day
Inclination	27.4948°
Longitude of ascending node	355.2889°
Argument of perihelion	239.07°
Earth MOID	37.0117 AU (5.53687 Tm)
Jupiter MOID	33.0091 AU (4.93809 Tm)
Physical characteristics
Dimensions	200 km (assuming a Haumea-like albedo of 0.7) (<902km)
Synodic rotation period	7.92 h (0.330 d)
Sidereal rotation period	7.92 h
Geometric albedo	0.7 (assumed)
Temperature	~43 K
Spectral type	Neutral B−V = 0.68, V−R = 0.39 B−V = 0.74, V−R = 0.38
Absolute magnitude (H)	4.5