C/2015 X5 PANSTARRS
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Comet C/2015 X5 was discovered on 6 December 2015 with Pan-STARRS 1 telescope (Haleakala), that is almost 2 years before its perihelion passage.
Comet had its closest approach to the Earth on 4 January 2018 (5.909 au); 4 days after its perihelion passage.
The preferred solution given here is based on data spanning over 4.19 yr in a range of heliocentric distances: 8.38 au – 6.80 au (perihelion) – 8.45 au.
This Oort spike comet suffers tiny planetary perturbations.
Comet had its closest approach to the Earth on 4 January 2018 (5.909 au); 4 days after its perihelion passage.
The preferred solution given here is based on data spanning over 4.19 yr in a range of heliocentric distances: 8.38 au – 6.80 au (perihelion) – 8.45 au.
This Oort spike comet suffers tiny planetary perturbations.
| solution description | ||
|---|---|---|
| number of observations | 171 | |
| data interval | 2015 12 06 – 2018 02 08 | |
| data arc selection | data generally limited to pre-perihelion (PRE) | |
| range of heliocentric distances | 8.38 au – 6.80 au (perihelion) – 6.81 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 | 332 | |
| RMS [arcseconds] | 0.22 | |
| orbit quality class | 1a+ | |
| orbital elements (heliocentric ecliptic J2000) | ||
|---|---|---|
| Epoch | 2018 01 02 | |
| perihelion date | 2017 12 31.02870660 | ± 0.00093854 |
| perihelion distance [au] | 6.80173014 | ± 0.00000500 |
| eccentricity | 1.00332087 | ± 0.00000382 |
| argument of perihelion [°] | 27.752309 | ± 0.000074 |
| ascending node [°] | 122.314515 | ± 0.000004 |
| inclination [°] | 124.290922 | ± 0.00001 |
| reciprocal semi-major axis [10-6 au-1] | -488.24 | ± 0.56 |