(472271) 2014 UM33

(472271) 2014 UM33, provisionally designated 2010 TQ182, is a trans-Neptunian object and possible dwarf planet residing in the outer Kuiper belt. It was discovered on October 22, 2014, by the Mount Lemmon Survey. It is listed on Mike Brown's website as a probable dwarf planet, ranked 67th most likely.[4]

(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 arc11.86 yr (4,332 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[1][2]
5.2[4]

    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 2009.

    See also

    References
    1. "472271 (2014 UM33)". Minor Planet Center. Retrieved 25 October 2016.
    2. "JPL Small-Body Database Browser: 472271 (2014 UM33)" (2015-08-26 last obs.). Jet Propulsion Laboratory. Retrieved 25 October 2016.
    3. "Glossary: Absolute Magnitude (H)". JPL. NASA. Retrieved 2 January 2015.
    4. Brown, Mike. "How many dwarf planets are there in the outer solar system? (updates daily)". www.gps.caltech.edu. Caltech. Retrieved 21 July 2015.
    5. Wm. Robert Johnston (24 March 2015). "List of Known Trans-Neptunian Objects". Johnston's Archive. Retrieved 21 July 2015.
    6. Bruton, Dan. "Conversion of Absolute Magnitude to Diameter". SFASU – Department of Physics and Astronomy. Archived from the original on 18 December 2008. Retrieved 18 August 2015.


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