C/2002 Q5 LINEAR
more info
Comet C/2002 Q5 was discovered on 28 August 2002 with Lincoln Laboratory Near-Earth Asteroid Research project, that is almost 3 months before its perihelion passage. It was observed until 30 May 2003.
Comet had its closest approach to the Earth on 30 August 2002 (0.994 au), two days after its discovery.
Solutions given here are based on data spanning over 0.753 yr in a range of heliocentric distances: 1.75 au – 1.24 au (perihelion) – 2.92 au.
This Oort spike comet suffers large planetary perturbations during its passage through the planetary system; these perturbations lead to escape the comet from the planetary zone on a hyperbolic orbit (see future barycentric orbits).
See also Królikowska 2014.

solution description
number of observations 605
data interval 2002 08 28 – 2003 05 30
data type perihelion within the observation arc (FULL)
data arc selection entire data set (STD)
range of heliocentric distances 1.75 au – 1.24 au (perihelion) – 2.92 au
type of model of motion NS - non-gravitational orbits for standard g(r)
data weighting YES
number of residuals 1195
RMS [arcseconds] 0.57
orbit quality class 1b
orbital elements (heliocentric ecliptic J2000)
Epoch 2002 11 22
perihelion date 2002 11 19.19959833 ± 0.00006991
perihelion distance [au] 1.24299506 ± 0.00000316
eccentricity 1.00165115 ± 0.00000887
argument of perihelion [°] 133.306325 ± 0.000070
ascending node [°] 33.747807 ± 0.000061
inclination [°] 149.164085 ± 0.000015
recip semi-major axis [10-6 au-1] -1,328.36 ± 7.14
Upper panel: 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.
Lower panel (panels): O-C diagram for this(two) solution (solutions) given in this database, where residuals in right ascension are shown using magenta dots and in declination by blue open circles.
non-gravitational parameters
A1 [10-8au/day2] -2.4794 ± 0.2704
A2 [10-8au/day2] 0.40151 ± 0.07452
A3 [10-8au/day2] -0.075221 ± 0.033638
m -2.15
n 5.093
k -4.6142
r0 [au] 2.808
α 0.1113