C/2015 X5 PANSTARRS
more info
Comet C/2015 X5 was discovered on 6 December 2015 with Pan-STARRS 1 telescope (Haleakala), that is almost 2 years before its perihelion passage. In 2020, this comet is still observed.
Comet had its closest approach to the Earth on 4 January 2018 (5.909 au); 4 days after its perihelion passage.
Solution given here is based on data spanning over 2.18 yr in a range of heliocentric distances: 8.38 au – 6.802 au (perihelion) – 6.81 au (2 February 2018).
This is Oort spike comet.

solution description
number of observations 171
data interval 2015 12 06 – 2018 02 08
data type perihelion within the observation arc (FULL)
data arc selection entire data set (STD)
range of heliocentric distances 8.38 au – 6.80 au (perihelion) – 6.81 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 332
RMS [arcseconds] 0.22
orbit quality class 1a+
orbital elements (heliocentric ecliptic J2000)
Epoch 2018 01 02
perihelion date 2017 12 31.02870660 ± 0.00093854
perihelion distance [au] 6.80173014 ± 0.00000500
eccentricity 1.00332087 ± 0.00000382
argument of perihelion [°] 27.752309 ± 0.000074
ascending node [°] 122.314515 ± 0.000004
inclination [°] 124.290922 ± 0.00001
recip semi-major axis [10-6 au-1] -488.24 ± 0.56