C/2017 K1 PANSTARRS
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Comet C/2017 K1 was discovered on 21 May 2017 with Pan-STARRS 1 telescope (Haleakala), that is about 10 months before its perihelion passage. Next, three pre-discovery measurements were found going back to 1 September 2015. This comet was observed until 27 May 2019.
Comet had its closest approach to the Earth on 29 April 2018 (6.286 au), about 1.5 months after its perihelion passage.
The preferred solution given here is based on data spanning over 3.73 yr in a range of heliocentric distances: 9.28 au – 7.29 au (perihelion) – 7.80 au.
This Oort spike comet suffers tiny planetary perturbations during its passage through the planetary system that likely lead to a bit tighter future orbit (see future barycentric orbits).
Comet had its closest approach to the Earth on 29 April 2018 (6.286 au), about 1.5 months after its perihelion passage.
The preferred solution given here is based on data spanning over 3.73 yr in a range of heliocentric distances: 9.28 au – 7.29 au (perihelion) – 7.80 au.
This Oort spike comet suffers tiny planetary perturbations during its passage through the planetary system that likely lead to a bit tighter future orbit (see future barycentric orbits).
| solution description | ||
|---|---|---|
| number of observations | 138 | |
| data interval | 2015 09 01 – 2019 05 27 | |
| data type | perihelion within the observation arc (FULL) | |
| data arc selection | entire data set (STD) | |
| range of heliocentric distances | 9.28 au – 7.29 au (perihelion) – 7.8 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 | 268 | |
| RMS [arcseconds] | 0.23 | |
| orbit quality class | 1a+ | |
| orbital elements (heliocentric ecliptic J2000) | ||
|---|---|---|
| Epoch | 2018 03 23 | |
| perihelion date | 2018 03 14.23364541 | ± 0.00096636 |
| perihelion distance [au] | 7.28559852 | ± 0.00000688 |
| eccentricity | 1.00245416 | ± 0.00000587 |
| argument of perihelion [°] | 4.164732 | ± 0.000067 |
| ascending node [°] | 225.642291 | ± 0.000006 |
| inclination [°] | 154.009404 | ± 0.000011 |
| reciprocal semi-major axis [10-6 au-1] | -336.85 | ± 0.80 |