C/2011 F1 LINEAR
more info
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 (heliocentric ecliptic J2000)
Epoch 2013 01 28
perihelion date 2013 01 08.00876051 ± 0.00008429
perihelion distance [au] 1.81915093 ± 0.00000048
eccentricity 0.99995697 ± 0.00000404
argument of perihelion [°] 192.547906 ± 0.000023
ascending node [°] 85.115048 ± 0.000008
inclination [°] 56.612837 ± 0.000015
recip semi-major axis [10-6 au-1] 23.65 ± 2.22
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
non-gravitational parameters
A1 [10-8au\day-2] 6.2926 ± 0.0615
A2 [10-8au\day-2] -2.5369 ± 0.0989
A3 [10-8au\day-2] -0.064616 ± 0.027105
m -2.15
n 5.093
k -4.6142
r0 [au] 2.808
α 0.1113