C/2002 R3 LONEOS
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C/2002 R3 was discovered on 4 September 2002 by the LONEOS as an apparently asteroidal object. A few days later its cometary apperance was reported by observers [IAUC 7970, 2002 September 14].
This comet made its closest approach to the Earth on 13 September 2003 (3.004 au), three months after perihelion.
Solution given here is based on data spanning over 1.7 yr in a range of heliocentric distances: 4.57 au – 3.869 au (perihelion) – 4.88 au.
This Oort spike comet suffers slight planetary perturbations during its passage through the planetary system; however, they can lead to escape of the comet from the solar system on hiperbolic orbit (see future barycentric orbit).
See also Królikowska 2014 and Królikowska and Dybczyński 2017.

solution description
number of observations 1274
data interval 2002 09 04 – 2004 05 24
data type perihelion within the observation arc (FULL)
data arc selection entire data set (STD)
range of heliocentric distances 4.57 au – 3.87 au (perihelion) – 4.88 au
detectability of NG effects in the comet's motion comet with determinable NG~orbit
type of model of motion GR - gravitational orbit
data weighting YES
number of residuals 2533
RMS [arcseconds] 0.55
orbit quality class 1a
orbital elements (heliocentric ecliptic J2000)
Epoch 2003 06 10
perihelion date 2003 06 13.47673425 ± 0.00029539
perihelion distance [au] 3.86949192 ± 0.00000140
eccentricity 1.00269594 ± 0.00000218
argument of perihelion [°] 45.068253 ± 0.000052
ascending node [°] 54.296419 ± 0.000016
inclination [°] 161.095581 ± 0.000008
recip semi-major axis [10-6 au-1] -696.72 ± 0.56
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