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 4653
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
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 9257
RMS [arcseconds] 0.47
orbit quality class 1a+
orbital elements (heliocentric ecliptic J2000)
Epoch 2013 01 28
perihelion date 2013 01 08.01487223 ± 0.00005881
perihelion distance [au] 1.81912689 ± 0.00000063
eccentricity 1.00009379 ± 0.00000054
argument of perihelion [°] 192.552690 ± 0.000026
ascending node [°] 85.115053 ± 0.000008
inclination [°] 56.612802 ± 0.000002
reciprocal semi-major axis [10-6 au-1] -51.56 ± 0.30
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.