(303775) 2005 QU182

(303775) 2005 QU₁₈₂ (provisional designation 2005 QU₁₈₂) is a trans-Neptunian object with a bright absolute magnitude of 3.74.^[4]

(303775) 2005 QU₁₈₂

Discovery[1]
Discovered by	M. E. Brown D. L. Rabinowitz C. A. Trujillo
Discovery date	30 August 2005
Designations
MPC designation	2005 QU182
Minor planet category	TNO (SDO)[2][3]
Orbital characteristics[4]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 2
Observation arc	13642 days (37.35 yr)
Aphelion	184.19 AU (27.554 Tm) (Q)
Perihelion	36.827 AU (5.5092 Tm) (q)
Semi-major axis	110.51 AU (16.532 Tm) (a)
Eccentricity	0.66675 (e)
Orbital period (sidereal)	1161.74 yr (424325.7 d)
Mean anomaly	13.854° (M)
Mean motion	0° 0m 3.054s / day (n)
Inclination	14.032° (i)
Longitude of ascending node	78.395° (Ω)
Argument of perihelion	223.69° (ω)
Earth MOID	35.8244 AU (5.35925 Tm)
Jupiter MOID	31.769 AU (4.7526 Tm)
TJupiter	6.711
Physical characteristics
Dimensions	416±73 km[5]
Synodic rotation period	9.61 h (0.400 d)
Sidereal rotation period	9.61 hr[4]
Geometric albedo	0.328+0.160 −0.109[5]
Apparent magnitude	20.9[6]
Absolute magnitude (H)	3.80±0.32[5] 3.74[4]

Distance

It came to perihelion in 1971^[4] and is currently 51.8 AU from the Sun.^[6] In April 2013, it moved beyond 50 AU from the Sun.

It has been observed 81 times over 10 oppositions with precovery images back to 1974.^[4]

2005 QU₁₈₂ takes over 1,200 years to orbit the Sun. Among large TNOs, only Sedna, 2012 VP113, 2013 FS₂₈ and (445473) 2010 VZ98 have a longer orbit around the Sun.^[7]

See also

• List of Solar System objects most distant from the Sun