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. After some time pre-discovery data were found going back to 5 March 2013. This comet was rarely observed until 28 September 2016.
Comet had its closest approach to the Earth on 8 May 2015 (4.939 au), a week after its perihelion passage.
We recommended GR solution spanning over 3.57 yr in a range of heliocentric distances from 5.57 au – 4.90 au (perihelion) – 8.54 au as the preferred orbit( solution 'b1'), because radial component of NG~acceleration is negative in solution 'bc'.
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 larger than 10000 au (see future barycentric orbits).
Comet had its closest approach to the Earth on 8 May 2015 (4.939 au), a week after its perihelion passage.
We recommended GR solution spanning over 3.57 yr in a range of heliocentric distances from 5.57 au – 4.90 au (perihelion) – 8.54 au as the preferred orbit( solution 'b1'), because radial component of NG~acceleration is negative in solution 'bc'.
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 larger than 10000 au (see future barycentric orbits).
| solution description | ||
|---|---|---|
| number of observations | 44 | |
| data interval | 2013 03 05 – 2016 09 28 | |
| data type | perihelion within the observation arc (FULL) | |
| data arc selection | entire data set (STD) | |
| range of heliocentric distances | 5.57 au – 4.90 au (perihelion) – 8.54 au | |
| type of model of motion | NC - non-gravitational orbits for symmetric CO-g(r)-like function | |
| data weighting | YES | |
| number of residuals | 83 | |
| RMS [arcseconds] | 0.52 | |
| orbit quality class | 1a | |
| orbital elements (heliocentric ecliptic J2000) | ||
|---|---|---|
| Epoch | 2014 02 12 | |
| perihelion date | 2014 02 11.82641070 | ± 0.01296713 |
| perihelion distance [au] | 4.90288576 | ± 0.00005968 |
| eccentricity | 0.99881215 | ± 0.00007157 |
| argument of perihelion [°] | 272.006479 | ± 0.001584 |
| ascending node [°] | 36.429930 | ± 0.000087 |
| inclination [°] | 83.598234 | ± 0.000161 |
| reciprocal semi-major axis [10-6 au-1] | 242.28 | ± 14.60 |
| non-gravitational parameters | ||
|---|---|---|
| A1 [10-8au/day2] | -3.0238 | ± 1.0551 |
| A2 [10-8au/day2] | -3.6872 | ± 1.6904 |
| A3 [10-8au/day2] | 0 | (assumed) |
| m | -2.00 | |
| n | 3.000 | |
| k | -2.6000 | |
| r0 [au] | 10.000 | |
| α | 0.0100 | |