C/2001 K5 LINEAR
more info
C/2001 K5 was discovered on 17 May 2001 by the LINEAR as an apparently asteroidal object. Soon, its cometary apperance was reported [IAUC 7634, 2001 May 28]. Later, pre-discovery observations by LINEAR from 30 April 2001 were found.
This comet made its closest approach to the Earth on 30 May 2002 (4.432 au), 4.3 months before perihelion.
Solution given here is based on data spanning over 3.6 yr in a range of heliocentric distances: 6.50 au – 5.184 au (perihelion) – 7.65 au.
This Oort spike comet suffers small planetary perturbations during its passage through the planetary system that lead to escape of the comet from the solar system on hiperbolic orbit (see future barycentric orbit).
See also Królikowska 2014 and Królikowska and Dybczyński 2017.

solution description
number of observations 3402
data interval 2001 04 30 – 2004 11 25
data type perihelion within the observation arc (FULL)
data arc selection entire data set (STD)
range of heliocentric distances 6.5 au – 5.18 au (perihelion) – 7.65 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 6736
RMS [arcseconds] 0.66
orbit quality class 1a+
orbital elements (barycentric ecliptic J2000)
Epoch 1697 03 25
perihelion date 2002 10 11.97453800 ± 0.00022500
perihelion distance [au] 5.18958159 ± 0.00000140
eccentricity 0.99994997 ± 0.00000210
argument of perihelion [°] 47.066240 ± 0.000023
ascending node [°] 237.490666 ± 0.000006
inclination [°] 72.541315 ± 0.000005
recip semi-major axis [10-6 au-1] 9.64 ± 0.41
file containing 5001 VCs swarm
2001k5a2.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.