(472271) 2014 UM33

(472271) 2014 UM33
Discovery[1]
Discovered byMount Lemmon Survey (Pan-STARRS)
Discovery siteMount Lemmon
Discovery date22 October 2014
Designations
(472271) 2014 UM33
2014 UM33 · 2010 TQ182
TNO
Orbital characteristics[2]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 3
Observation arc20.00 yr (>8,000 days)
Earliest precovery date16 October 2003
Aphelion49.631 AU
Perihelion36.163 AU
42.897 AU
Eccentricity0.1570
280.96 yr (102,622 days)
269.23°
0° 0m 12.6s / day
Inclination17.403°
236.58°
269.24°
Physical characteristics
Dimensions320–720 km[3]
478 km[4]
607 km[5]
220–880[6]
21–22
4.9[2]
4.95[1]
5.2[4]

(472271) 2014 UM33 (provisional designation 2014 UM33) is a trans-Neptunian object residing in the outer Kuiper belt. It was discovered on October 22, 2014, by the Mount Lemmon Survey.

It is approximately the size of 2 Pallas in the asteroid belt. On August 18, 2015, 2014 UM33 was found to have been discovered over four years previously, with the designation 2010 TQ182. This extended its observation arc to over 4 years, and then precovery observations were found using the Sloan Digital Sky Survey from January 2009 and Palomar Observatory from October 2003.

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