C/2014 OE4 PANSTARRS
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Comet C/2014 OE4 was discovered on 26 July 2014 with Pan-STARRS 1 telescope (Haleakala), that is 2.4 yr before its perihelion passage; its cometary nature was soon recognised. Next, this comet was found on earlier images taken on several occasion by Pan-STARRS 1, Mount Lemmon Survey and Steward Observatory (Kitt Peak-Spacewatch survey), reaching back to 8 May 2014. This comet was observed until the end of 2019, and is still observable.
Comet had its closest approach to the Earth on 1 June 2016 (5.755 au), about six months before its perihelion passage.
Solution given here is based on data spanning over 3.78 yr in a range of heliocentric distances: 8.86 au – 6.253 au (perihelion) – 6.91 au (18 February 2018).
This Oort spike comet suffers slight planetary perturbations during its passage through the planetary system; these perturbations lead to a more tight future orbit with a semimajor axis larger than 10,000 au (see future barycentric orbits).

solution description
number of observations 1373
data interval 2014 05 08 – 2018 02 18
data type perihelion within the observation arc (FULL)
data arc selection entire data set (STD)
range of heliocentric distances 8.86 au – 6.24 au (perihelion) – 6.91 au
detectability of NG effects in the comet's motion NG effects not determinable
type of model of motion GR - gravitational orbit
data weighting YES
number of residuals 2691
RMS [arcseconds] 0.31
orbit quality class 1a+
orbital elements (barycentric ecliptic J2000)
Epoch 2325 06 02
perihelion date 2016 12 09.29723832 ± 0.00026412
perihelion distance [au] 6.25313639 ± 0.00000151
eccentricity 0.99938998 ± 0.00000178
argument of perihelion [°] 65.787985 ± 0.000026
ascending node [°] 240.447886 ± 0.000003
inclination [°] 81.358584 ± 0.000004
reciprocal semi-major axis [10-6 au-1] 97.55 ± 0.28