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+ | |
| 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] | 58.49 – 59.22 – 59.96 | |
| previous perihelion distance [au] | 5.208 – 5.209 – 5.214 | |
| previous aphelion distance [103 au] | 33.4 – 33.8 – 34.2 | |
| time interval to previous perihelion [Myr] | 2.15 – 2.19 – 2.23 | |
| 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] | 58.52 – 59.25 – 59.99 | |
| previous perihelion distance [au] | 6.6719 – 6.6751 – 6.6792 | |
| previous aphelion distance [103 au] | 33.3 – 33.7 – 34.2 | |
| time interval to previous perihelion [Myr] | 2.15 – 2.19 – 2.23 | |
| percentage of VCs with qprev < 10 | 100 | |