C/2005 K1 Skiff
more info
C/2005 K1 was discovered by Brian A. Skiff on 16 May 2005 using the 0.59-m LONEOS Schmidt telescope. Its cometary apperance was soon confirmed [IAUC 8532, 2005 May 20].
This comet made its closest approach to the Earth on 27 June 2006 (3.177 au), 7 months after its perihelion passage.
Solutions given here are based on data spanning over 2.2 yr in a range of heliocentric distances: 4.06 au – 3.693 au (perihelion) – 6.42 au.
This Oort spike comet suffers slight planetary perturbations during its passage through the planetary system, however these perturbations move out this comet from the solar system.
See also Królikowska 2014 and Królikowska and Dybczyński 2017.

solution description
number of observations 642
data interval 2005 05 16 – 2007 08 06
data type perihelion within the observation arc (FULL)
data arc selection entire data set (STD)
range of heliocentric distances 4.06 au – 3.69 au (perihelion) – 6.42 au
type of model of motion NS - non-gravitational orbits for standard g(r)
data weighting YES
number of residuals 1246
RMS [arcseconds] 0.52
orbit quality class 1a
orbital elements (heliocentric ecliptic J2000)
Epoch 2005 11 06
perihelion date 2005 11 21.21784000 ± 0.00090800
perihelion distance [au] 3.69287282 ± 0.00000357
eccentricity 1.00327669 ± 0.00000422
argument of perihelion [°] 134.943605 ± 0.000193
ascending node [°] 106.304986 ± 0.000023
inclination [°] 77.747678 ± 0.000012
recip semi-major axis [10-6 au-1] -887.30 ± 1.14
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/day2] 2515 ± 741
A2 [10-8au/day2] 184 ± 762
A3 [10-8au/day2] 0 (assumed)
m -2.15
n 5.093
k -4.6142
r0 [au] 2.808
α 0.1113