(472271) 2014 UM₃₃

(472271) 2014 UM₃₃
Discovery
Discovered by	Mount Lemmon Survey (Pan-STARRS)
Discovery site	Mount Lemmon
Discovery date	22 October 2014
Designations
MPC designation	(472271) 2014 UM33
Alternative designations	2014 UM33 · 2010 TQ182
Minor planet category	TNO
Orbital characteristics
	Epoch 31 July 2016 (JD 2457600.5)
	Uncertainty parameter 3
Observation arc	20.00 yr (>8,000 days)
Earliest precovery date	16 October 2003
Aphelion	49.631 AU
Perihelion	36.163 AU
Semi-major axis	42.897 AU
Eccentricity	0.1570
Orbital period (sidereal)	280.96 yr (102,622 days)
Mean anomaly	269.23°
Mean motion	0° 0m 12.6s / day
Inclination	17.403°
Longitude of ascending node	236.58°
Argument of perihelion	269.24°
Physical characteristics
Dimensions	320–720 km; 478 km; 607 km; 220–880
Apparent magnitude	21–22
Absolute magnitude (H)	4.9; 4.95; 5.2

(472271) 2014 UM₃₃, provisionally designated 2010 TQ₁₈₂, 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.

References

^ ^a ^b "472271 (2014 UM33)". Minor Planet Center. Retrieved 7 June 2023.
^ ^a ^b "JPL Small-Body Database Browser: 472271 (2014 UM33)" (2015-08-26 last obs.). Jet Propulsion Laboratory. Retrieved 25 October 2016.
^ "Glossary: Absolute Magnitude (H)". JPL. NASA. Archived from the original on 2 March 2001. Retrieved 2 January 2015.
^ ^a ^b Brown, Mike. "How many dwarf planets are there in the outer solar system? (updates daily)". www.gps.caltech.edu. Caltech. Retrieved 21 July 2015.
^ Wm. Robert Johnston (24 March 2015). "List of Known Trans-Neptunian Objects". Johnston's Archive. Retrieved 21 July 2015.
^ 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.

External links

(472271) 2014 UM33 at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit viewer · Orbit parameters · Physical parameters

This article about a centaur (minor planet) or trans-Neptunian object is a stub. You can help Wikipedia by expanding it.

[MPC-object-1] "472271 (2014 UM33)". Minor Planet Center. Retrieved 7 June 2023.

[jpldata-2] "JPL Small-Body Database Browser: 472271 (2014 UM33)" (2015-08-26 last obs.). Jet Propulsion Laboratory. Retrieved 25 October 2016.

[Hjpl-3] "Glossary: Absolute Magnitude (H)". JPL. NASA. Archived from the original on 2 March 2001. Retrieved 2 January 2015.

[mikebrown-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.

[johnstonsarchive-5] Wm. Robert Johnston (24 March 2015). "List of Known Trans-Neptunian Objects". Johnston's Archive. Retrieved 21 July 2015.

[absmagcalc-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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