C/2019 G4 PanSTARRS
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Comet C/2019 G4 was discovered on 9 April 2019, about 7 months after its perihelion passage. Later a two pre-discovery observations were found from 24 July 2018, these two measurements are the only data taken before perihelion passage.
Solution given here span over 2.30 yr in a range of heliocentric distances: 5.87 au – 5.86 au (perihelion) – 7.99 au.
This Oort spike comet suffers small planetary perturbations during its passage through the planetary system that lead to a more tight future orbit (see future barycentric orbit).
Solution given here span over 2.30 yr in a range of heliocentric distances: 5.87 au – 5.86 au (perihelion) – 7.99 au.
This Oort spike comet suffers small planetary perturbations during its passage through the planetary system that lead to a more tight future orbit (see future barycentric orbit).
| solution description | ||
|---|---|---|
| number of observations | 38 | |
| data interval | 2018 07 24 – 2020 11 11 | |
| data type | perihelion within the observation arc (FULL) | |
| data arc selection | entire data set (STD) | |
| range of heliocentric distances | 5.87 au – 5.86 au (perihelion) – 7.99 au | |
| detectability of NG effects in the comet's motion | NG effects not determinable | |
| type of model of motion | GR - gravitational orbit | |
| data weighting | YES | |
| number of residuals | 75 | |
| RMS [arcseconds] | 0.26 | |
| orbit quality class | 1a | |
| orbital elements (heliocentric ecliptic J2000) | ||
|---|---|---|
| Epoch | 2018 08 30 | |
| perihelion date | 2018 09 15.16781241 | ± 0.00322231 |
| perihelion distance [au] | 5.85804605 | ± 0.00002060 |
| eccentricity | 0.99964339 | ± 0.00001187 |
| argument of perihelion [°] | 287.835194 | ± 0.000373 |
| ascending node [°] | 130.475842 | ± 0.000051 |
| inclination [°] | 138.375518 | ± 0.000045 |
| reciprocal semi-major axis [10-6 au-1] | 60.88 | ± 2.03 |