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+ | |
| orbital elements (heliocentric ecliptic J2000) | ||
|---|---|---|
| Epoch | 2023 02 25 | |
| perihelion date | 2016 06 29.24907336 | ± 0.00129350 |
| perihelion distance [au] | 8.01203755 | ± 0.00001179 |
| eccentricity | 1.00244213 | ± 0.00001016 |
| argument of perihelion [°] | 263.948836 | ± 0.000070 |
| ascending node [°] | 25.045145 | ± 0.000018 |
| inclination [°] | 78.297824 | ± 0.000014 |
| reciprocal semi-major axis [10-6 au-1] | -304.81 | ± 1.27 |