C/2000 Y1 Tubbiolo
more info
C/2000 Y1 was discovered on 16 December 2000 by A.F. Tubbiolo with the 0.9m Spacewatch telescope at Kitt Peak. At once, pre-discovery detections by LINEAR going back to 24 October 2000 were found [IAUC 7544, 2000 December 18].
This comet made its closest approach to the Earth on 23 November 2000 (7.000 au), 2.3 months before perihelion.
Solution given here is based on data spanning over 2.0 yr in a range of heliocentric distances: 8.00 au – 7.975 au (perihelion) – 8.86 au.
This Oort spike comet suffers tiny planetary perturbations during its passage through the planetary system; however, they could lead to escape of the comet from the solar system on hiperbolic orbit (see future barycentric orbit).
See also Królikowska 2014 and Królikowska and Dybczyński 2017.

solution description
number of observations 94
data interval 2000 10 24 – 2002 11 05
data type perihelion within the observation arc (FULL)
data arc selection entire data set (STD)
range of heliocentric distances 8 au – 7.97 au (perihelion) – 8.86 au
detectability of NG effects in the comet's motion NG effects not determinable
type of model of motion GR - gravitational orbit
data weighting NO
number of residuals 185
RMS [arcseconds] 0.74
orbit quality class 1a
orbital elements (heliocentric ecliptic J2000)
Epoch 2001 04 01
perihelion date 2001 02 02.14266800 ± 0.01248700
perihelion distance [au] 7.97474088 ± 0.00004697
eccentricity 1.00268899 ± 0.00003350
argument of perihelion [°] 181.731551 ± 0.000767
ascending node [°] 239.395267 ± 0.000036
inclination [°] 137.976898 ± 0.000104
recip semi-major axis [10-6 au-1] -337.19 ± 4.19
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