C/2000 O1 Koehn
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C/2000 O1 was discovered on 26 May 2000 by B.W. Koehn in the course of the LONEOS as a cometary object [IAUC 7462, 2000 July 23]. Positional observations of this comet were next linked by Brian G. Marsden with pre-discovery measurements of two asteroidal objects observed by LINEAR (1998 XA70 = 1999 UJ10) going back to 14 December 1998 [MPEC 2000-O22].
This comet made its closest approach to the Earth on 9 November 1999 (5.050 au), 2.5 months before perihelion.
Solution given here is based on data spanning over 2.7 yr in a range of heliocentric distances: 6.58 au – 5.922 au (perihelion) – 7.15 au.
This Oort spike comet suffers small planetary perturbations during its passage through the planetary system that lead to a more tight future orbit (see future barycentric orbit).
See also Królikowska 2014 and Królikowska and Dybczyński 2017.
This comet made its closest approach to the Earth on 9 November 1999 (5.050 au), 2.5 months before perihelion.
Solution given here is based on data spanning over 2.7 yr in a range of heliocentric distances: 6.58 au – 5.922 au (perihelion) – 7.15 au.
This Oort spike comet suffers small planetary perturbations during its passage through the planetary system that lead to a more tight future orbit (see future barycentric orbit).
See also Królikowska 2014 and Królikowska and Dybczyński 2017.
| solution description | ||
|---|---|---|
| number of observations | 65 | |
| data interval | 1998 12 14 – 2001 08 27 | |
| data type | perihelion within the observation arc (FULL) | |
| data arc selection | entire data set (STD) | |
| range of heliocentric distances | 6.58 au – 5.92 au (perihelion) – 7.15 au | |
| 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 | 128 | |
| RMS [arcseconds] | 0.81 | |
| orbit quality class | 1a | |
| orbital elements (barycentric ecliptic J2000) | ||
|---|---|---|
| Epoch | 1692 09 27 | |
| perihelion date | 2000 01 28.21257900 | ± 0.00334200 |
| perihelion distance [au] | 5.91487290 | ± 0.00002655 |
| eccentricity | 0.99969254 | ± 0.00002809 |
| argument of perihelion [°] | 55.184190 | ± 0.000313 |
| ascending node [°] | 88.877691 | ± 0.000115 |
| inclination [°] | 148.072564 | ± 0.00004 |
| reciprocal semi-major axis [10-6 au-1] | 51.98 | ± 4.75 |
| file containing 5001 VCs swarm |
|---|
| 2000o1a1.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.