C/2019 E3 ATLAS
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Comet C/2019 E3 was discovered on 5 March 2019 when it was 13.65 au from the Sun and about 4.5 yr before its perihelion passage. Later a series of pre-discovery observations were found going backto 22 January 2015 (about 19 au from the Sun and 8.5 yr before its perihelion passage). In the moment of orbit determination this comet was still before its perihelion passage.
Thus, solutions (GR and NG) given here are based on pre-perihelion data and span over 8.30 yr in a range of heliocentric distances from 19.08 au – to 10.36 au.
This is Oort spike comet with original semimajor axis of about 34,000 au.
Thus, solutions (GR and NG) given here are based on pre-perihelion data and span over 8.30 yr in a range of heliocentric distances from 19.08 au – to 10.36 au.
This is Oort spike comet with original semimajor axis of about 34,000 au.
| solution description | ||
|---|---|---|
| number of observations | 1000 | |
| data interval | 2015 01 22 – 2023 05 11 | |
| data arc selection | data generally limited to pre-perihelion (PRE) | |
| range of heliocentric distances | 19.08 au – 10.36au | |
| 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 | 993 | |
| RMS [arcseconds] | 0.37 | |
| orbit quality class | 1a+ | |
| 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] | 27.08 – 27.92 – 28.62 | |
| previous perihelion distance [au] | 434 – 441 – 447 | |
| previous aphelion distance [103 au] | 69.4 – 71.2 – 73.4 | |
| time interval to previous perihelion [Myr] | 6.52 – 6.75 – 7 | |
| percentage of VCs with qprev > 20 | 100 | |
| previous 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] | 28.80 – 29.42 – 30.02 | |
| previous perihelion distance [au] | 55.8 – 60.4 – 65.9 | |
| previous aphelion distance [103 au] | 66.6 – 67.9 – 69.4 | |
| time interval to previous perihelion [Myr] | 5.95 – 6.12 – 6.31 | |
| percentage of VCs with qprev > 20 | 100 | |