C/2019 K7 Smith
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Comet C/2019 K7 was discovered on 30 May 2019, more than one year before its perihelion passage. Later a few pre-discovery observations were found from 8 and 9 October 2017. In the moment of orbit determination, this comet was still observed.
Solutions (GR and NG) given here span over 5.49 yr in a range of heliocentric distances: 8.64 au – 4.48 au (perihelion) – 9.2 au; orbits based on pre-perihelion and post-perihelion data independently were also obtained.
This Oort spike comet suffers moderate planetary perturbations during its passage through the planetary system that lead to a more tight future orbit (see future barycentric orbit).
Solutions (GR and NG) given here span over 5.49 yr in a range of heliocentric distances: 8.64 au – 4.48 au (perihelion) – 9.2 au; orbits based on pre-perihelion and post-perihelion data independently were also obtained.
This Oort spike comet suffers moderate planetary perturbations during its passage through the planetary system that lead to a more tight future orbit (see future barycentric orbit).
| solution description | ||
|---|---|---|
| number of observations | 631 | |
| data interval | 2017 10 08 – 2020 06 17 | |
| data arc selection | data generally limited to pre-perihelion (PRE) | |
| range of heliocentric distances | 8.64 au – 4.48 au (perihelion) – 4.48 au | |
| detectability of NG effects in the comet's motion | comet with determinable NG~orbit | |
| type of model of motion | GR - gravitational orbit | |
| data weighting | YES | |
| number of residuals | 1246 | |
| RMS [arcseconds] | 0.29 | |
| orbit quality class | 1a+ | |
| previous orbit statistics, both Galactic and stellar perturbations were taken into account | ||
|---|---|---|
| no. of returning VCs in the swarm | 5001 | * |
| no. of escaping VCs in the swarm | 0 | |
| no. of hyperbolas among escaping VCs in the swarm | 0 | |
| previous reciprocal semi-major axis [10-6 au-1] | 16.49 – 17.31 – 18.55 | |
| previous perihelion distance [au] | 1400 – 3900 – 8700 | |
| previous aphelion distance [103 au] | 106 – 111 – 113 | |
| time interval to previous perihelion [Myr] | 13 – 14.1 – 14.6 | |
| percentage of VCs with qprev > 20 | 100 | |
| previous orbit statistics, here only the Galactic tide has been included | ||
|---|---|---|
| no. of returning VCs in the swarm | 5001 | * |
| no. of escaping VCs in the swarm | 0 | |
| no. of hyperbolas among escaping VCs in the swarm | 0 | |
| previous reciprocal semi-major axis [10-6 au-1] | 18.59 – 19.36 – 20.14 | |
| previous perihelion distance [au] | 93 – 120 – 160 | |
| previous aphelion distance [103 au] | 99.2 – 103 – 107 | |
| time interval to previous perihelion [Myr] | 11.1 – 11.8 – 12.6 | |
| percentage of VCs with qprev > 20 | 100 | |