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 (heliocentric ecliptic J2000) | ||
|---|---|---|
| Epoch | 2021 07 05 | |
| perihelion date | 2021 10 18.74580247 | ± 0.00242967 |
| perihelion distance [au] | 5.18110032 | ± 0.00001047 |
| eccentricity | 1.00120031 | ± 0.00001379 |
| argument of perihelion [°] | 10.664499 | ± 0.000269 |
| ascending node [°] | 147.418434 | ± 0.000016 |
| inclination [°] | 102.884062 | ± 0.000048 |
| reciprocal semi-major axis [10-6 au-1] | -231.67 | ± 2.66 |
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.