C/2015 R3 PANSTARRS
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Comet C/2015 R3 was discovered on 12 September 2015 with Pan-STARRS 1 telescope (Haleakala), that is about 1.6 yr after its perihelion passage. This comet was rarely observed until 28 September 2016.
Comet had its closest approach to the Earth on 13 October 2014 (4.794 au), 8 months after its perihelion passage.
Solution given here is based on data spanning over 1.05 yr in a range of heliocentric distances from 6.56 au to 8.54 au.
This Oort spike comet suffers small planetary perturbations during its passage through the planetary system that lead to a more tight future orbit with a semimajor axis of about 4,000 au (see future barycentric orbits).
Comet had its closest approach to the Earth on 13 October 2014 (4.794 au), 8 months after its perihelion passage.
Solution given here is based on data spanning over 1.05 yr in a range of heliocentric distances from 6.56 au to 8.54 au.
This Oort spike comet suffers small planetary perturbations during its passage through the planetary system that lead to a more tight future orbit with a semimajor axis of about 4,000 au (see future barycentric orbits).
| solution description | ||
|---|---|---|
| number of observations | 36 | |
| data interval | 2015 09 12 – 2016 09 28 | |
| data type | observed only after perihelion (POST) | |
| data arc selection | entire data set (STD) | |
| range of heliocentric distances | 6.56 au – 8.54au | |
| 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 | 65 | |
| RMS [arcseconds] | 0.46 | |
| orbit quality class | 1b | |
| orbital elements (heliocentric ecliptic J2000) | ||
|---|---|---|
| Epoch | 2014 02 12 | |
| perihelion date | 2014 02 11.76181393 | ± 0.01324740 |
| perihelion distance [au] | 4.90324280 | ± 0.00009957 |
| eccentricity | 0.99841764 | ± 0.00005607 |
| argument of perihelion [°] | 272.008279 | ± 0.001127 |
| ascending node [°] | 36.429668 | ± 0.000117 |
| inclination [°] | 83.599006 | ± 0.000275 |
| recip semi-major axis [10-6 au-1] | 322.72 | ± 11.43 |
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.