C/2020 H3 Wierzchos
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Comet C/2020 H3 was discovered on 25 April 2020 by Kacper W. Wierzchos (Mount Lemmon Survey), that is a month and one week before its perihelion passage, and was observed until 26 August 2020 [MPC database]. Comet had its closest approach to the Earth on 21 June 2005 (1.619 au), that is 18 days after perihelion.
GR solution given here is based on data spanning over 0.336 yr in a range of heliocentric distances: 2.35 au – 2.30 au (perihelion) – 2.49 au. NG orbit is not possible to obtain.
This Oort spike comet suffers negligible planetary perturbations while passing through the planetary system.
GR solution given here is based on data spanning over 0.336 yr in a range of heliocentric distances: 2.35 au – 2.30 au (perihelion) – 2.49 au. NG orbit is not possible to obtain.
This Oort spike comet suffers negligible planetary perturbations while passing through the planetary system.
| solution description | ||
|---|---|---|
| number of observations | 131 | |
| data interval | 2020 04 25 – 2020 08 26 | |
| data type | perihelion within the observation arc (FULL) | |
| data arc selection | entire data set (STD) | |
| range of heliocentric distances | 2.35 au – 2.30 au (perihelion) – 2.49 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 | 254 | |
| RMS [arcseconds] | 0.38 | |
| orbit quality class | 2a | |
| 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] | 58.19 – 67.44 – 76.19 | |
| previous perihelion distance [au] | 2.68 – 2.75 – 2.9 | |
| previous aphelion distance [103 au] | 26 – 30 – 34 | |
| time interval to previous perihelion [Myr] | 1.5 – 1.8 – 2.3 | |
| percentage of VCs with qprev < 10 | 97 | |
| percentage of VCs with qprev > 20 | 3 | |
Upper panel: 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.
Middle panel(s): O-C diagram for a given solution (sometimes in comparison to another solution available in CODE), where residuals in right ascension are shown using magenta dots and in declination by blue open circles.
Lowest panel: Relative weights for a given data set(s).
Middle panel(s): O-C diagram for a given solution (sometimes in comparison to another solution available in CODE), where residuals in right ascension are shown using magenta dots and in declination by blue open circles.
Lowest panel: Relative weights for a given data set(s).
| previous_g 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] | 58.20 – 67.45 – 76.19 | |
| previous perihelion distance [au] | 2.49 – 2.59 – 2.8 | |
| previous aphelion distance [103 au] | 26 – 30 – 34 | |
| time interval to previous perihelion [Myr] | 1.5 – 1.8 – 2.3 | |
| percentage of VCs with qprev < 10 | 100 | |