C/2006 K3 McNaught
more info
Comet C/2006 K3 was discovered on 22 May 2006 by Robert H. McNaught (Siding Spring Survey), that is about almost 10 months before its perihelion passage. It was observed until 26 January 2008.
Comet had its closest approach to the Earth on 26 December 2006 (2.416 au), about 2.5 months before its perihelion passage.
Solutions given here are based on data spanning over 1.68 yr in a range of heliocentric distances: 3.95 au – 2.501 au (perihelion) – 4.13 au.
This Oort spike comet suffers small planetary perturbations during its passage through the planetary system; however, these perturbations lead to escape the comet from the planetary zone on a hyperbolic orbit (see future barycentric orbits).
See also Królikowska and Dybczyński 2013 and Królikowska 2020.

solution description
number of observations 206
data interval 2006 05 22 – 2008 01 26
data type significantly more measurements before perihelion (PRE+)
data arc selection entire data set (STD)
range of heliocentric distances 3.95 au – 2.50 au (perihelion) – 4.13 au
type of model of motion NS - non-gravitational orbits for standard g(r)
data weighting YES
number of residuals 402
RMS [arcseconds] 0.54
orbit quality class 1a
orbital elements (barycentric ecliptic J2000)
Epoch 1611 09 13
perihelion date 2007 03 13.05203836 ± 0.00027831
perihelion distance [au] 2.50325995 ± 0.00000303
eccentricity 0.99984724 ± 0.00001158
argument of perihelion [°] 328.074663 ± 0.000153
ascending node [°] 49.427949 ± 0.000043
inclination [°] 92.612447 ± 0.000018
recip semi-major axis [10-6 au-1] 61.02 ± 4.63
file containing 5001 VCs swarm
2006k3n5.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.