C/2017 E3 PANSTARRS
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Comet C/2017 E3 was discovered on 7 March 2017 with Pan-STARRS 1 telescope (Haleakala), that is about 3 months before its perihelion passage. This comet was observed until 24 July 2019.
Comet had its closest approach to the Earth on 24 April 2017 (3.480 au), about 1.5 month after discovery and more than a month before its perihelion passage.
Solution given here is based on data spanning over 1.21 yr in a range of heliocentric distances: 5.95 au – 5.915 au (perihelion) – 6.42 au (24 May 2018).
This Oort spike comet suffers moderate planetary perturbations during its passage through the planetary system; these perturbations lead to escape the comet from the planetary zone on a hyperbolic orbit (see future barycentric orbits).
Comet had its closest approach to the Earth on 24 April 2017 (3.480 au), about 1.5 month after discovery and more than a month before its perihelion passage.
Solution given here is based on data spanning over 1.21 yr in a range of heliocentric distances: 5.95 au – 5.915 au (perihelion) – 6.42 au (24 May 2018).
This Oort spike comet suffers moderate planetary perturbations during its passage through the planetary system; these perturbations lead to escape the comet from the planetary zone on a hyperbolic orbit (see future barycentric orbits).
| solution description | ||
|---|---|---|
| number of observations | 348 | |
| data interval | 2017 03 07 – 2018 05 24 | |
| data type | perihelion within the observation arc (FULL) | |
| data arc selection | entire data set (STD) | |
| range of heliocentric distances | 5.95 au – 5.92 au (perihelion) – 6.42 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 | 684 | |
| RMS [arcseconds] | 0.45 | |
| orbit quality class | 1a | |
| orbital elements (heliocentric ecliptic J2000) | ||
|---|---|---|
| Epoch | 2017 06 16 | |
| perihelion date | 2017 05 31.58309653 | ± 0.00278038 |
| perihelion distance [au] | 5.91525895 | ± 0.00000569 |
| eccentricity | 1.00496498 | ± 0.00000646 |
| argument of perihelion [°] | 333.664659 | ± 0.000264 |
| ascending node [°] | 220.758558 | ± 0.000009 |
| inclination [°] | 70.665041 | ± 0.000021 |
| recip semi-major axis [10-6 au-1] | -839.35 | ± 1.09 |