C/2014 S1 PANSTARRS
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Comet C/2014 S1 was discovered on 19 September 2014 with Pan-STARRS 1 telescope (Haleakala), that is about 11 months after its perihelion passage. This comet was rarely observed until 3 September 2015.
Comet had its closest approach to the Earth on 13 November 2013 (7.561 au), about two weeks after its perihelion passage.
Solution given here is based on data spanning over 0.98 yr in a range of heliocentric distances: 8.37 au – 8.137 au (perihelion) – 9.10 au.
This Oort spike comet suffers extremely slight planetary perturbations during its passage through the planetary system and its semimajor axis will be almost unchanged after leaving the planetary zone (see future barycentric orbits).
Comet had its closest approach to the Earth on 13 November 2013 (7.561 au), about two weeks after its perihelion passage.
Solution given here is based on data spanning over 0.98 yr in a range of heliocentric distances: 8.37 au – 8.137 au (perihelion) – 9.10 au.
This Oort spike comet suffers extremely slight planetary perturbations during its passage through the planetary system and its semimajor axis will be almost unchanged after leaving the planetary zone (see future barycentric orbits).
| solution description | ||
|---|---|---|
| number of observations | 42 | |
| data interval | 2014 09 19 – 2015 09 03 | |
| data type | observed only after perihelion (POST) | |
| data arc selection | entire data set (STD) | |
| range of heliocentric distances | 8.37 au – 9.1au | |
| 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 | 84 | |
| RMS [arcseconds] | 0.47 | |
| orbit quality class | 1b | |
| previous orbit statistics, both Galactic and stellar perturbations were taken into account | ||
|---|---|---|
| no. of returning VCs in the swarm | 254 | |
| no. of escaping VCs in the swarm | 4747 | |
| no. of hyperbolas among escaping VCs in the swarm | 3096 | * |
| previous reciprocal semi-major axis [10-6 au-1] | -23.80 – -4.53 – 14.47 | |
| previous perihelion distance [au] | 22 – 27 – 33 | |
| previous aphelion distance [103 au] | 91 – 240 – 1300 | |
| time interval to previous perihelion [Myr] | 1.89 ± 0.0055 | |
| percentage of VCs with 10 < qprev < 20 | 4 | |
| percentage of VCs with qprev > 20 | 96 | |
Time distribution of positional observations with corresponding heliocentric (red curve) and geocentric (green curve) distance at which they were taken. The horizontal dotted line shows the perihelion distance for a given comet whereas vertical dotted line — the moment of perihelion passage.
| previous orbit statistics, here only the Galactic tide has been included | ||
|---|---|---|
| no. of returning VCs in the swarm | 406 | |
| no. of escaping VCs in the swarm | 4595 | |
| no. of hyperbolas among escaping VCs in the swarm | 3099 | * |
| previous reciprocal semi-major axis [10-6 au-1] | -23.83 – -4.56 – 14.45 | |
| previous perihelion distance [au] | 20 – 25 – 32 | |
| previous aphelion distance [103 au] | 91 – 240 – 1300 | |
| time interval to previous perihelion [Myr] | 1.98 ± 0.0055 | |
| percentage of VCs with 10 < qprev < 20 | 9 | |
| percentage of VCs with qprev > 20 | 91 | |