C/2018 V1 Machholz-Fujikawa-Iwamoto
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Comet C/2018 V1 was discovered on 7 November 2019, about one months before its perihelion passage, and was last seen on 15 December 2018.
Solutions (GR and NG) given here span over 0.101 yr in a range of heliocentric distances: 0.75 au – 0.39 au (perihelion) – 0.50 au;due to short data arc the orbital parameters are uncertain (orbit of 2b quality class).
This comet suffers notable planetary perturbations during its passage through the planetary system; in both cases (GR and NG model of motion) these perturbations lead to escape the comet from the planetary zone on a hyperbolic orbit (see future barycentric orbits).However, the original orbits in both solutions differ and the interstellar origin of this comet cannot be ruled out.
Solutions (GR and NG) given here span over 0.101 yr in a range of heliocentric distances: 0.75 au – 0.39 au (perihelion) – 0.50 au;due to short data arc the orbital parameters are uncertain (orbit of 2b quality class).
This comet suffers notable planetary perturbations during its passage through the planetary system; in both cases (GR and NG model of motion) these perturbations lead to escape the comet from the planetary zone on a hyperbolic orbit (see future barycentric orbits).However, the original orbits in both solutions differ and the interstellar origin of this comet cannot be ruled out.
| solution description | ||
|---|---|---|
| number of observations | 766 | |
| data interval | 2018 11 08 – 2018 12 15 | |
| data type | perihelion within the observation arc (FULL) | |
| data arc selection | entire data set (STD) | |
| range of heliocentric distances | 0.75 au – 0.39 au (perihelion) – 0.5 au | |
| type of model of motion | NS - non-gravitational orbits for standard g(r) | |
| data weighting | YES | |
| number of residuals | 1518 | |
| RMS [arcseconds] | 0.56 | |
| orbit quality class | 2b | |
| previous orbit statistics, both Galactic and stellar perturbations were taken into account | ||
|---|---|---|
| no. of returning VCs in the swarm | 2905 | * |
| no. of escaping VCs in the swarm | 2096 | |
| no. of hyperbolas among escaping VCs in the swarm | 1920 | |
| previous reciprocal semi-major axis [10-6 au-1] | -184.25 – 55.44 – 295.91 | |
| previous perihelion distance [au] | 0.391 – 0.4 – 276 | R |
| previous aphelion distance [103 au] | 5.8 – 13 – 65 | |
| time interval to previous perihelion [Myr] | 0.15 – 0.5 – 3.3 | R |
| percentage of VCs with qprev < 10 | 87 | |
| percentage of VCs with qprev > 20 | 13 | |
| previous orbit statistics, here only the Galactic tide has been included | ||
|---|---|---|
| no. of returning VCs in the swarm | 2916 | * |
| no. of escaping VCs in the swarm | 2085 | |
| no. of hyperbolas among escaping VCs in the swarm | 1920 | |
| previous reciprocal semi-major axis [10-6 au-1] | -184.30 – 55.44 – 295.91 | |
| previous perihelion distance [au] | 0.39 – 0.4 – 1.99 | R |
| previous aphelion distance [103 au] | 5.8 – 13 – 65 | |
| time interval to previous perihelion [Myr] | 0.15 – 0.5 – 3.5 | R |
| percentage of VCs with qprev < 10 | 95 | |
| percentage of VCs with 10 < qprev < 20 | 1 | |
| percentage of VCs with qprev > 20 | 4 | |