C/2011 F1 LINEAR
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Comet C/2011 F1 was discovered on 17 March 2011 with Lincoln Laboratory Near-Earth Asteroid Research project; that is about a year and 10 months before its perihelion passage. The comet was observed until 7 August 2014.
Comet had its closest approach to the Earth on 6 April 2013 (2.560 au), about 3 months after its perihelion passage.
Solutions given here are based on data spanning over 3.39 yr in a range of heliocentric distances: 6.99 au – 1.819 au (perihelion) – 6.30 au.
This Oort spike comet suffers moderate 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 2020.

solution description
number of observations 4654
data interval 2011 03 17 – 2014 08 07
data type perihelion within the observation arc (FULL)
data arc selection entire data set (STD)
range of heliocentric distances 6.99 au – 1.82 au (perihelion) – 6.3 au
type of model of motion NS - non-gravitational orbits for standard g(r)
data weighting YES
number of residuals 9196
RMS [arcseconds] 0.42
orbit quality class 1a
orbital elements (barycentric ecliptic J2000)
Epoch 1713 02 10
perihelion date 2013 01 08.31485087 ± 0.00005934
perihelion distance [au] 1.82192235 ± 0.00000062
eccentricity 0.99995414 ± 0.00000053
argument of perihelion [°] 192.517290 ± 0.000025
ascending node [°] 85.161573 ± 0.000007
inclination [°] 56.600141 ± 0.000002
reciprocal semi-major axis [10-6 au-1] 25.17 ± 0.29
file containing 5001 VCs swarm
2011f1n5.bmi
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.
Six 2D-projections of the 6D space of original swarm including 5001 VCs. Each density map is given in logarithmic scale presented on the right in the individual panel.