C/2012 V1 PANSTARRS
more info
Comet C/2012 V1 was discovered on 3 November 2012 with Pan-STARRS 1 telescope (Haleakala), that is almost 9 months before its perihelion passage. It was observed until 13 August 2013 (see picture).
C/2012 V1 had its closest approach to the Earth on 5 August 2013 (1.163 au), about 2 weeks after its perihelion passage.
Solution given here is based on data spanning over 0.775 yr in a range of heliocentric distances: 3.58 au – 2.09 au (perihelion) – 2.11 au.
This probably Oort spike comet (slightly negative original 1/a) suffers moderate planetary perturbations during its passage through the planetary system that cause a tighter future orbit with a semimajor axis of about 1,300 au (see future barycentric orbits).
See also Królikowska 2020.

solution description
number of observations 97
data interval 2012 11 03 – 2013 08 13
data type significantly more measurements before perihelion (PRE+)
data arc selection entire data set (STD)
range of heliocentric distances 3.58 au – 2.09 au (perihelion) – 2.11 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 177
RMS [arcseconds] 0.36
orbit quality class 1b
orbital elements (barycentric ecliptic J2000)
Epoch 1713 08 29
perihelion date 2013 07 21.14411011 ± 0.00027737
perihelion distance [au] 2.08672072 ± 0.00000259
eccentricity 1.00003254 ± 0.00000477
argument of perihelion [°] 123.111282 ± 0.000137
ascending node [°] 85.133219 ± 0.000069
inclination [°] 157.643456 ± 0.000028
recip semi-major axis [10-6 au-1] -15.59 ± 2.29
file containing 5001 VCs swarm
2012v1a5.bmi
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
Six 2D-projections of the 6D space of original swarm including 5001 VCs. Each density map is given in logarithmic scale presented on the right in the individual panel.