(556416) 2014 OE394

(556416) 2014 OE₃₉₄ (provisional designation 2014 OE₃₉₄) is a large classical Kuiper belt object that was discovered in July 2014 by the Pan-STARRS 1 telescope, and announced on 17 July 2016.^[5] It is one of the brighter trans-Neptunian objects, being the 34th brightest cubewano as of 23 July 2016. Its exact size is unknown, but is most likely between 240 and 730 kilometers across.^[3]

(556416) 2014 OE₃₉₄

Discovery
Discovered by	Pan-STARRS (F51)
Discovery site	F51, Haleakala Observatory
Discovery date	28 July 2014
Designations
Minor planet category	Classical Kuiper belt object[1]
Orbital characteristics[2]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 2
Observation arc	1452 days (5 oppositions)
Aphelion	51.976 AU
Perihelion	40.805 ± 0.002 AU
Semi-major axis	46.391 AU
Eccentricity	0.12040 ± 0.00005
Orbital period (sidereal)	316 years
Mean anomaly	70.25469°
Inclination	3.93206 ± 0.00008°
Longitude of ascending node	308.87986 ± 0.0004°
Argument of perihelion	259.35897 ± 0.008°
Physical characteristics
Mean diameter	280-540 km[2] 240-730 km[3]
Absolute magnitude (H)	4.74[4]

2014 OE₃₉₄ was observed by the New Horizons probe in September 2017 and August 2018. It passed close by:^[6] about 8.7 AU away on 1 January 2017, and 7.5 AU on 1 January 2019.

See also

• (119951) 2002 KX14, one of the largest cold classical Kuiper belt objects