C/2001 B1 LINEAR
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Comet C/2001 B1 was discovered on 22 January 2001 with Lincoln Laboratory Near-Earth Asteroid Research project, that is 4 months after its perihelion passage. It was observed until 8 January 2002.
Comet had its closest approach to the Earth on 5 December 2000 (2.544 au), 2.5 months after its perihelion passage and 1.5 month before discovery.
Solution given here is based on data spanning over 0.961 yr in a range of heliocentric distances from 3.18 au to 5.34 au.
This Oort spike comet suffers small planetary perturbations during its passage through the planetary system; however, these perturbations lead to escape the comet from the planetary zone on a hyperbolic orbit (see future barycentric orbits).
See also Królikowska 2020.

solution description
number of observations 169
data interval 2001 01 22 – 2002 01 08
data type observed only after perihelion (POST)
data arc selection entire data set (STD)
range of heliocentric distances 3.18 au – 5.34au
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 332
RMS [arcseconds] 0.57
orbit quality class 1b
orbital elements (heliocentric ecliptic J2000)
Epoch 2000 09 13
perihelion date 2000 09 19.28619935 ± 0.00071655
perihelion distance [au] 2.92799769 ± 0.00001321
eccentricity 1.00054894 ± 0.00000570
argument of perihelion [°] 284.814495 ± 0.000344
ascending node [°] 49.831524 ± 0.000013
inclination [°] 104.134303 ± 0.000081
recip semi-major axis [10-6 au-1] -187.48 ± 1.95
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