C/2021 G3 PanSTARRS
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Comet C/2021 G3 was discovered on 1 April 2021 with the Pan-STARRS 1 telescope (Haleakala), that is seven months before its perihelion passage.
Comet had its closest approach to the Earth on 5 February 2022 (4.36 au), about 3.5 months after its perihelion passage.
GR solution given here is based on data span over 1.79 yr in a range of heliocentric distances: 5.52 au – 5.18 au (perihelion) – 5.99 au.
This Oort spike comet suffers almost negligible planetary perturbations during its passage through the planetary system; and its future orbit have semimajor axis still longer than 10,000 au.
Comet had its closest approach to the Earth on 5 February 2022 (4.36 au), about 3.5 months after its perihelion passage.
GR solution given here is based on data span over 1.79 yr in a range of heliocentric distances: 5.52 au – 5.18 au (perihelion) – 5.99 au.
This Oort spike comet suffers almost negligible planetary perturbations during its passage through the planetary system; and its future orbit have semimajor axis still longer than 10,000 au.
| solution description | ||
|---|---|---|
| number of observations | 63 | |
| data interval | 2021 02 09 – 2022 11 24 | |
| data type | perihelion within the observation arc (FULL) | |
| data arc selection | entire data set (STD) | |
| range of heliocentric distances | 5.52 au – 5.18 au (perihelion) – 5.99 au | |
| detectability of NG effects in the comet's motion | NG effects not determinable | |
| type of model of motion | GR - gravitational orbit | |
| data weighting | NO | |
| number of residuals | 121 | |
| RMS [arcseconds] | 0.31 | |
| orbit quality class | 1a | |
| orbital elements (barycentric ecliptic J2000) | ||
|---|---|---|
| Epoch | 2327 08 11 | |
| perihelion date | 2021 10 19.45392145 | ± 0.00241749 |
| perihelion distance [au] | 5.18821584 | ± 0.00001028 |
| eccentricity | 0.99982970 | ± 0.00001361 |
| argument of perihelion [°] | 10.687719 | ± 0.000268 |
| ascending node [°] | 147.397860 | ± 0.000015 |
| inclination [°] | 102.825389 | ± 0.000047 |
| reciprocal semi-major axis [10-6 au-1] | 32.83 | ± 2.62 |
| file containing 5001 VCs swarm |
|---|
| 2021g3a1.bpl |
Time distribution of positional observations with corresponding heliocentric (red curve) and geocentric (green curve) distance at which they were taken. The horizontal dotted line shows the perihelion distance for a given comet whereas vertical dotted line — the moment of perihelion passage.
Six 2D-projections of the 6D space of future swarm including 5001 VCs. Each density map is given in logarithmic scale presented on the right in the individual panel.