C/2003 S3 LINEAR
more info
C/2003 S3 was discovered on 27 September 2003 during the LINEAR survey. Next day, its cometary apperance was confirmed [IAUC 8211, 2003 September 29]. At the moment of discovery, it was about 5.5 month after perihelion passage. Later, Syuichi Nakano linked observations of this comet with measurements of asteroid 2002 XM113 taken on 23 December 2001 (NEAT) and on 7, 11, and 23 December 2002 (LINEAR) [Nakano Notes 1022].
This comet made its closest approach to the Earth on 9 December 2002 (7.216 au), four months before perihelion. However, the second approach to the Earth was on 16 November 2003 (7.256 au, see figure), that is less than two months after the moment of discovery (see figure).
Solution given here is based on data spanning over 2.8 yr in a range of heliocentric distances: 8.61 au – 8.128 au (perihelion) – 8.80 au.
This Oort spike comet suffers slight planetary perturbations during its passage through the planetary system; however, these perturbations probably move out this comet from the solar system.
See also Królikowska 2014 and Królikowska and Dybczyński 2017.

solution description
number of observations 124
data interval 2001 12 23 – 2004 10 23
data type perihelion within the observation arc (FULL)
data arc selection entire data set (STD)
range of heliocentric distances 8.61 au – 8.13 au (perihelion) – 8.8 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 242
RMS [arcseconds] 0.49
orbit quality class 1a
orbital elements (heliocentric ecliptic J2000)
Epoch 2003 03 22
perihelion date 2003 04 10.25354300 ± 0.00409400
perihelion distance [au] 8.12943090 ± 0.00003043
eccentricity 1.00142723 ± 0.00002358
argument of perihelion [°] 154.553947 ± 0.000233
ascending node [°] 226.389152 ± 0.000035
inclination [°] 151.496771 ± 0.000029
recip semi-major axis [10-6 au-1] -175.56 ± 2.90
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