(15820) 1994 TB

(15820) 1994 TB is a trans-Neptunian object residing in the Kuiper belt. It is in a 3:2 orbital resonance with Neptune, similar to Pluto. It was discovered on October 2, 1994, by David C. Jewitt and Jun Chen at the Mauna Kea Observatory, in Hawaii.

(15820) 1994 TB

Discovery
Discovered by	D. C. Jewitt and J. Chen
Discovery date	2 October 1994
Designations
MPC designation	(15820) 1994 TB
Alternative designations	none
Minor planet category	TNO (plutino)
Orbital characteristics[1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 3
Observation arc	5210 days (14.26 yr)
Aphelion	51.81015 AU (7.750688 Tm)
Perihelion	26.95788 AU (4.032841 Tm)
Semi-major axis	39.38402 AU (5.891766 Tm)
Eccentricity	0.31551
Orbital period (sidereal)	247.17 yr (90277.3 d)
Average orbital speed	4.63 km/s
Mean anomaly	355.418°
Mean motion	0° 0m 14.356s / day
Inclination	12.1390°
Longitude of ascending node	317.481°
Argument of perihelion	99.2670°
Earth MOID	25.9914 AU (3.88826 Tm)
Jupiter MOID	22.0897 AU (3.30457 Tm)
TJupiter	5.237
Physical characteristics
Dimensions	167 km[2]
Mass	4.9×1018? kg
Mean density	2.0? g/cm3
Equatorial surface gravity	0.0467? m/s2
Equatorial escape velocity	0.0883? km/s
Synodic rotation period	6.5 h (0.27 d)
Sidereal rotation period	? d
Geometric albedo	0.10?
Temperature	~44 K
Spectral type	?
Absolute magnitude (H)	7.3