C/2016 Q2 PANSTARRS
more info
Comet C/2016 Q2 was discovered on 26 August 2016 with Pan-STARRS 1 telescope (Haleakala), that is more then 5 years before its perihelion passage. In 2020, this comet is still on its orbital journey towards perihelion.
Comet will have its closest approach to the Earth on 24 May 2021 (6.805 au), about 2 weeks after its perihelion passage.
Solution given here is based on data spanning over 3.17 yr in a range of heliocentric distances from 12.58 au to 7.94 au (29 October 2019).
This is comet with original semimajor axis of about 7,800 au.

solution description
number of observations 138
data interval 2016 08 26 – 2019 10 29
data type observed only before perihelion (PRE)
data arc selection entire data set (STD)
range of heliocentric distances 12.58 au – 7.94au
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 270
RMS [arcseconds] 0.32
orbit quality class 1a
orbital elements (heliocentric ecliptic J2000)
Epoch 2021 09 23
perihelion date 2021 05 11.99367501 ± 0.00407506
perihelion distance [au] 7.08192824 ± 0.00003107
eccentricity 1.00118204 ± 0.00001032
argument of perihelion [°] 84.535793 ± 0.000375
ascending node [°] 322.295182 ± 0.000011
inclination [°] 109.388256 ± 0.000029
recip semi-major axis [10-6 au-1] -166.91 ± 1.45
Time distribution of positional observations with corresponding heliocentric (red curve) and geocentric (green curve) distance at which they were taken. The horizontal dotted line shows the perihelion distance for a given comet whereas vertical dotted line – the moment of perihelion passage