C/2013 L2 Catalina
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Comet C/2013 L2 was discovered on 2 June 2013 with the Catalina Sky Survey, that is more than one year after perihelion passage, and next observed 121 days (0.33 yr) in a range of heliocentric distances from 5.71 au to 6.22 au.
Comet had its closest approach to the Earth on 2 July 2012 (3.888 au), less than two months after perihelion.
C/2013 L2 suffered small planetary perturbations during its passage through the planetary system.
This Oort spike comet suffers small planetary perturbations during its passage through the planetary system; these perturbations lead to a more tight future orbit (see future barycentric orbits).
See also Królikowska and Dybczyński 2017.

solution description
number of observations 242
data interval 2013 06 02 – 2013 10 01
data type observed only after perihelion (POST)
data arc selection entire data set (STD)
range of heliocentric distances 5.71 au – 6.22au
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 471
RMS [arcseconds] 0.32
orbit quality class 2a
orbital elements (heliocentric ecliptic J2000)
Epoch 2013 04 18
perihelion date 2012 05 11.25925356 ± 0.00697668
perihelion distance [au] 4.87255449 ± 0.00008139
eccentricity 1.00093442 ± 0.00009181
argument of perihelion [°] 1.949569 ± 0.001554
ascending node [°] 285.875499 ± 0.000539
inclination [°] 106.774487 ± 0.000434
reciprocal semi-major axis [10-6 au-1] -191.77 ± 18.85
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.