(620074) 2013 AT183

(620074) 2013 AT₁₈₃ (provisional designation 2013 AT₁₈₃) is a large trans-Neptunian object in the scattered disc, the outermost region of the Solar System. It was discovered on 26 January 2012 by the Pan-STARRS 1 sky survey at Haleakala Observatory, Hawaii.^[1] First known precovery observation of (620074) 2013 AT₁₈₃ was carried out on 29 January 2003.^[1]

(620074) 2013 AT₁₈₃

Orbit of 2013 AT183
Discovery[1]
Discovered by	Pan-STARRS 1
Discovery site	Haleakala Obs.
Discovery date	26 January 2012
Designations
MPC designation	2013 AT183
Minor planet category	TNO[2] · SDO[3] · distant[1]
Orbital characteristics[2]
Epoch 27 April 2019 (JD 2458600.5)
Uncertainty parameter 4 · 3[1]
Observation arc	20.20 yr (8,080 d)
Earliest precovery date	29 January 2003[1]
Aphelion	87.592 AU
Perihelion	35.630 AU
Semi-major axis	61.611 AU
Eccentricity	0.4217
Orbital period (sidereal)	483.61 yr (176,640 d)
Mean anomaly	68.884°
Mean motion	0° 0m 7.2s / day
Inclination	28.125°
Longitude of ascending node	304.59°
Argument of perihelion	68.292°
Physical characteristics
Mean diameter	160-799 km[2]
Geometric albedo	0.124[4]
Absolute magnitude (H)	4.6[2] · 4.92[1]

See also

• List of Solar System objects most distant from the Sun