C/2020 O2 Amaral
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Comet C/2020 O2 was discovered on 23 July 2020, more than one year before its perihelion passage. In the moment of orbit determination, this comet was still observed.
Currently, solutions (GR and NG) based on pre-perihelion data are given. Therefore, the data arc span over 1.10 yr in a range of heliocentric distances from 5.76 au to 4.86 au.
This is Oort spike comet.
Currently, solutions (GR and NG) based on pre-perihelion data are given. Therefore, the data arc span over 1.10 yr in a range of heliocentric distances from 5.76 au to 4.86 au.
This is Oort spike comet.
| solution description | ||
|---|---|---|
| number of observations | 507 | |
| data interval | 2020 07 23 – 2021 08 28 | |
| data arc selection | data generally limited to pre-perihelion (PRE) | |
| range of heliocentric distances | 5.76 au – 4.86 au (perihelion) – 4.86 au | |
| type of model of motion | NC - non-gravitational orbits for symmetric CO-g(r)-like function | |
| data weighting | YES | |
| number of residuals | 986 | |
| RMS [arcseconds] | 0.27 | |
| orbit quality class | 1a | |
| orbital elements (heliocentric ecliptic J2000) | ||
|---|---|---|
| Epoch | 2021 08 14 | |
| perihelion date | 2021 08 28.48099637 | ± 0.00521120 |
| perihelion distance [au] | 4.86219398 | ± 0.00001249 |
| eccentricity | 1.00246295 | ± 0.00001089 |
| argument of perihelion [°] | 10.291759 | ± 0.000687 |
| ascending node [°] | 256.755838 | ± 0.000006 |
| inclination [°] | 71.747897 | ± 0.000214 |
| reciprocal semi-major axis [10-6 au-1] | -506.55 | ± 2.24 |
| non-gravitational parameters | ||
|---|---|---|
| A1 [10-8au/day2] | 2.8925 | ± 1.1932 |
| A2 [10-8au/day2] | 1.4435 | ± 0.5619 |
| A3 [10-8au/day2] | 1.4156 | ± 0.6659 |
| m | -2.00 | |
| n | 3.000 | |
| k | -2.6000 | |
| r0 [au] | 10.000 | |
| α | 0.0100 | |