(556416) 2014 OE394

(556416) 2014 OE394 is a large cubewano in the Kuiper belt 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.[4] Mike Brown's website lists it as a "possible" dwarf planet, with an estimated diameter of 337 kilometers.[2]

(556416) 2014 OE394
Discovery
Discovered byPan-STARRS (F51)
Discovery siteF51, Haleakala Observatory
Discovery date28 July 2014
Designations
Classical Kuiper belt object[1][2]
Orbital characteristics[3]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 2
Observation arc1452 days (5 oppositions)
Aphelion51.976 AU
Perihelion40.805 ± 0.002 AU
Semi-major axis
46.391 AU
Eccentricity0.12040 ± 0.00005
316 years
70.25469°
Inclination3.93206 ± 0.00008°
308.87986 ± 0.0004°
Argument of perihelion
259.35897 ± 0.008°
Physical characteristics
Mean diameter
280-540 km[3]
240-730 km[4]

    2014 OE394 is also somewhat close to the New Horizons probe, about 8.7 AU away on 1 January 2017, and 7.5 AU on 1 January 2019. Considering its large size, it would make a possible imaging target, as 15810 Arawn was in early 2016. However, as 2014 OE394 is currently over 10 times further than the other was, it would have much lower-precision data.

    References
    1. Marc W. Buie. "Orbit Fit and Astrometric record for 14OE394". SwRI (Space Science Department). Retrieved 17 February 2018.
    2. Brown, Mike. "How many dwarf planets are there in the outer solar system? (updates daily)". Mike Brown's Planets. Retrieved 24 July 2016.
    3. "IAU Minor Planet Center - 2014 OE394". Minor Planet Center. International Astronomical Union. Retrieved 24 July 2016.
    4. "JPL Small-Body Database Browser". Jet Propulsion Laboratory. NASA. Retrieved 24 July 2016.
    5. "MPEC 2016-O95 : 2014 OE394". Minor Planet Center. International Astronomical Union. Retrieved 24 July 2016.
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