C/2020 T4 PanSTARRS
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Comet C/2020 T4 was discovered on 15 October 2020, about 9.5 months before its perihelion passage, later two series of pre-discovery observations were found from 9 October 2020 and 26 September 2020. This comet was observed to 17 June 2021 (to about two weeks before perihelion passage).
Solutions given here are based on data span over 0.726 yr in a range of heliocentric distances from 3.78 au to 2.20 au.
This Oort spike comet suffers rather small planetary perturbations during its passage through the planetary system; however, they lead to escape the comet from the solar system on hyperbolic barycentric orbit.
Solutions given here are based on data span over 0.726 yr in a range of heliocentric distances from 3.78 au to 2.20 au.
This Oort spike comet suffers rather small planetary perturbations during its passage through the planetary system; however, they lead to escape the comet from the solar system on hyperbolic barycentric orbit.
| solution description | ||
|---|---|---|
| number of observations | 174 | |
| data interval | 2020 09 26 – 2021 06 17 | |
| data type | observed only before perihelion (PRE) | |
| data arc selection | entire data set (STD) | |
| range of heliocentric distances | 3.78 au – 2.2au | |
| 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 | 336 | |
| RMS [arcseconds] | 0.23 | |
| orbit quality class | 1b | |
| 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] | 40.21 – 41.44 – 42.37 | |
| previous perihelion distance [au] | 400 – 550 – 700 | |
| previous aphelion distance [103 au] | 46.8 – 47.7 – 49 | |
| time interval to previous perihelion [Myr] | 2.95 – 3.18 – 3.43 | |
| 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] | 43.55 – 45.92 – 48.37 | |
| previous perihelion distance [au] | 4.7 – 5.3 – 6.1 | |
| previous aphelion distance [103 au] | 41.3 – 43.6 – 45.9 | |
| time interval to previous perihelion [Myr] | 2.96 – 3.2 – 3.46 | |
| percentage of VCs with qprev < 10 | 100 | |