C/2012 V1 PANSTARRS
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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 (heliocentric ecliptic J2000)
Epoch 2013 07 07
perihelion date 2013 07 21.51140836 ± 0.00026711
perihelion distance [au] 2.08974623 ± 0.00000255
eccentricity 0.99982078 ± 0.00000472
argument of perihelion [°] 123.324977 ± 0.000138
ascending node [°] 85.378772 ± 0.000071
inclination [°] 157.842776 ± 0.000028
recip semi-major axis [10-6 au-1] 85.76 ± 2.26
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