C/2020 K8 Catalina-ATLAS
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Comet C/2020 K8 was discovered on 25 May 2020, about 3.5 months before its perihelion passage and was observed to 6 April 2021.
Solutions given here (NG and GR) are based on data span over 0.866 yr in a range of heliocentric distances: 2.18 au – 0.475 au (perihelion) – 3.40 au.
This Oort spike comet suffers moderate planetary perturbations during its passage through the planetary system that lead to escape the comet from the solar system on hyperbolic barycentric orbit.
Solutions given here (NG and GR) are based on data span over 0.866 yr in a range of heliocentric distances: 2.18 au – 0.475 au (perihelion) – 3.40 au.
This Oort spike comet suffers moderate planetary perturbations during its passage through the planetary system that lead to escape the comet from the solar system on hyperbolic barycentric orbit.
| solution description | ||
|---|---|---|
| number of observations | 283 | |
| data interval | 2020 05 25 – 2021 04 06 | |
| data type | significantly more measurements before perihelion (PRE+) | |
| data arc selection | entire data set (STD) | |
| range of heliocentric distances | 2.18 au – 0.47 au (perihelion) – 3.4 au | |
| type of model of motion | NS - non-gravitational orbits for standard g(r) | |
| data weighting | YES | |
| number of residuals | 550 | |
| RMS [arcseconds] | 0.44 | |
| orbit quality class | 1b | |
| previous orbit statistics, both Galactic and stellar perturbations were taken into account | ||
|---|---|---|
| no. of returning VCs in the swarm | 3775 | * |
| no. of escaping VCs in the swarm | 1226 | |
| no. of hyperbolas among escaping VCs in the swarm | 177 | |
| previous reciprocal semi-major axis [10-6 au-1] | 9.30 – 32.80 – 55.81 | |
| previous perihelion distance [au] | 0.33 – 360 – 590 | R |
| previous aphelion distance [103 au] | 36 – 60 – 160 | |
| time interval to previous perihelion [Myr] | 2.2 – 4.4 – 10 | R |
| percentage of VCs with qprev < 10 | 16 | |
| percentage of VCs with 10 < qprev < 20 | 1 | |
| percentage of VCs with qprev > 20 | 83 | |
| previous orbit statistics, here only the Galactic tide has been included | ||
|---|---|---|
| no. of returning VCs in the swarm | 4031 | * |
| no. of escaping VCs in the swarm | 970 | |
| no. of hyperbolas among escaping VCs in the swarm | 177 | |
| previous reciprocal semi-major axis [10-6 au-1] | 9.38 – 32.85 – 55.82 | |
| previous perihelion distance [au] | 0.26 – 2.9 – 180 | R |
| previous aphelion distance [103 au] | 36 – 60 – 160 | |
| time interval to previous perihelion [Myr] | 2.3 – 4.4 – 10 | R |
| percentage of VCs with qprev < 10 | 65 | |
| percentage of VCs with 10 < qprev < 20 | 7 | |
| percentage of VCs with qprev > 20 | 28 | |