C/2021 A6 PanSTARRS
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Comet C/2021 A6 was discovered on 8 January 2021, about 4 months before its perihelion passage; later a series of prediscovery images was found from 22 December 2020 and 26 November 2020. In the moment of orbit determination, this comet was still observed.
Solution given here is based on data span over 2.51 yr in a range of heliocentric distances: 7.99 au – 7.93 au (perihelion) – 9.13 au.Orbits based on pre-perihelion and post-perihelion data independently were also obtained.
This Oort spike comet suffers tiny planetary perturbations during its passage through the planetary system that lead to a bit tight future orbit.
Solution given here is based on data span over 2.51 yr in a range of heliocentric distances: 7.99 au – 7.93 au (perihelion) – 9.13 au.Orbits based on pre-perihelion and post-perihelion data independently were also obtained.
This Oort spike comet suffers tiny planetary perturbations during its passage through the planetary system that lead to a bit tight future orbit.
| solution description | ||
|---|---|---|
| number of observations | 164 | |
| data interval | 2020 11 20 – 2023 05 24 | |
| data type | perihelion within the observation arc (FULL) | |
| data arc selection | entire data set (STD) | |
| range of heliocentric distances | 7.99 au – 7.93 au (perihelion) – 9.13 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 | 316 | |
| RMS [arcseconds] | 0.23 | |
| orbit quality class | 1a+ | |
| orbital elements (barycentric ecliptic J2000) | ||
|---|---|---|
| Epoch | 1710 09 14 | |
| perihelion date | 2021 05 03.31999781 | ± 0.00149688 |
| perihelion distance [au] | 7.93689652 | ± 0.00000550 |
| eccentricity | 0.99970492 | ± 0.00000411 |
| argument of perihelion [°] | 351.666186 | ± 0.000091 |
| ascending node [°] | 164.079819 | ± 0.000004 |
| inclination [°] | 75.542981 | ± 0.00001 |
| reciprocal semi-major axis [10-6 au-1] | 37.18 | ± 0.52 |
| file containing 5001 VCs swarm |
|---|
| 2021a6ba.bmi |
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.