(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
46.391 AU
Eccentricity0.12040 ± 0.00005
316 years
70.25469°
Inclination3.93206 ± 0.00008°
308.87986 ± 0.0004°
259.35897 ± 0.008°
Physical characteristics
Mean diameter
280-540 km[3]
240-730 km[4]
4.74[5]

    (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.[6] 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]

    2014 OE394 was observed by the New Horizons probe in September 2017 and August 2018. It passed close by:[7] about 8.7 AU away on 1 January 2017, and 7.5 AU on 1 January 2019.

    References

    1. ↑ Marc W. Buie. "Orbit Fit and Astrometric record for 14OE394". SwRI (Space Science Department). Archived from the original on 28 March 2019. Retrieved 17 February 2018.
    2. 1 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. 1 2 "IAU Minor Planet Center - 2014 OE394". Minor Planet Center. International Astronomical Union. Retrieved 24 July 2016.
    4. 1 2 "JPL Small-Body Database Browser". Jet Propulsion Laboratory. NASA. Retrieved 24 July 2016.
    5. ↑ http://www.minorplanetcenter.net/db_search/show_object?object_id=556416
    6. ↑ "MPEC 2016-O95 : 2014 OE394". Minor Planet Center. International Astronomical Union. Retrieved 24 July 2016.
    7. ↑ Verbiscer, Anne J.; Helfenstein, Paul; Porter, Simon B.; Benecchi, Susan D.; Kavelaars, J. J.; Lauer, Tod R.; et al. (April 2022). "The Diverse Shapes of Dwarf Planet and Large KBO Phase Curves Observed from New Horizons". The Planetary Science Journal. 3 (4): 31. Bibcode:2022PSJ.....3...95V. doi:10.3847/PSJ/ac63a6. 95.
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