C/2000 K1 LINEAR
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C/2000 K1 was discovered on 26 May 2000 by the LINEAR as a cometary object [IAUC 7430, 2000 May 26]. Positional observations of this comet were next linked with pre-discovery measurements of two asteroidal objects observed by LINEAR in 1999 (1999 LW24 = 1999 NF13) from May to July 1999, and in May 2000 [IAUC 7431, MPEC 2000-K26, 27, 29].
This comet made its closest approach to the Earth on 15 June 1999 (5.387 au), six months before its perihelion passage.
Solution given here is based on data spanning over 2.2 yr in a range of heliocentric distances: 6.44 au – 6.276 au (perihelion) – 7.51 au.
This Oort spike comet suffers small planetary perturbations during its passage through the planetary system that lead to a more tight future orbit (see future barycentric orbit).
See also Królikowska 2014 and Królikowska and Dybczyński 2017.

solution description
number of observations 333
data interval 1999 05 18 – 2001 08 15
data type significantly more measurements after perihelion (POST+)
data arc selection entire data set (STD)
range of heliocentric distances 6.44 au – 6.28 au (perihelion) – 7.51 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 663
RMS [arcseconds] 0.72
orbit quality class 1a
orbital elements (heliocentric ecliptic J2000)
Epoch 1999 12 08
perihelion date 1999 12 14.79967100 ± 0.00227300
perihelion distance [au] 6.27611470 ± 0.00001447
eccentricity 1.00240548 ± 0.00001457
argument of perihelion [°] 15.814601 ± 0.000212
ascending node [°] 260.194253 ± 0.000028
inclination [°] 116.782036 ± 0.000037
recip semi-major axis [10-6 au-1] -383.27 ± 2.32
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