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 (heliocentric ecliptic J2000)
Epoch 2007 03 01
perihelion date 2007 03 13.36348909 ± 0.00036296
perihelion distance [au] 2.50143944 ± 0.00000237
eccentricity 1.00085639 ± 0.00000599
argument of perihelion [°] 328.075919 ± 0.000136
ascending node [°] 49.402938 ± 0.000029
inclination [°] 92.61971 ± 0.00002
recip semi-major axis [10-6 au-1] -342.36 ± 2.40
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
non-gravitational parameters
A1 [10-8au\day-2] 15.693 ± 1.671
A2 [10-8au\day-2] 2.2505 ± 2.4514
A3 [10-8au\day-2] -0.20861 ± 0.57628
m -2.15
n 5.093
k -4.6142
r0 [au] 2.808
α 0.1113