C/2018 S3 TESS
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Comet C/2018 S3 was discovered on 22 September 2018 by Transiting Exoplanet Survey Satellite (TESS), about two years after its perihelion passage; later 13 observations were found going more than 4.5 yr back to 29 June 2014 (all by Cerro Tololo-DECam). This comet was observed only by TESS and Cerro Tololo-DECam, and was last seen on 1 December 2018 by Cerro Tololo-DECam.
The solution given here is based solely on the data from Cerro Tololo-DECam and span over 4.79 yr in a range of heliocentric distances: 9.53 au – 8.01 au (perihelion) – 9.59 au.
This Oort spike comet suffers tiny planetary perturbations during its passage through the planetary system that lead to a future orbit with greater semimajor-axis (see future barycentric orbit).
The solution given here is based solely on the data from Cerro Tololo-DECam and span over 4.79 yr in a range of heliocentric distances: 9.53 au – 8.01 au (perihelion) – 9.59 au.
This Oort spike comet suffers tiny planetary perturbations during its passage through the planetary system that lead to a future orbit with greater semimajor-axis (see future barycentric orbit).
| solution description | ||
|---|---|---|
| number of observations | 17 | |
| data interval | 2014 02 15 – 2018 12 01 | |
| data type | perihelion within the observation arc (FULL) | |
| data arc selection | entire data set (STD) | |
| range of heliocentric distances | 9.53 au – 8.01 au (perihelion) – 9.59 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 | 34 | |
| RMS [arcseconds] | 0.13 | |
| 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] | 83.81 – 85.44 – 87.08 | |
| previous perihelion distance [au] | 8.643 – 8.698 – 8.756 | |
| previous aphelion distance [103 au] | 23 – 23.4 – 23.9 | |
| time interval to previous perihelion [Myr] | 1.23 – 1.26 – 1.3 | |
| percentage of VCs with qprev < 10 | 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] | 83.80 – 85.43 – 87.06 | |
| previous perihelion distance [au] | 8.584 – 8.624 – 8.668 | |
| previous aphelion distance [103 au] | 23 – 23.4 – 23.9 | |
| time interval to previous perihelion [Myr] | 1.23 – 1.26 – 1.3 | |
| percentage of VCs with qprev < 10 | 100 | |