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 (barycentric ecliptic J2000) | ||
|---|---|---|
| Epoch | 2321 11 10 | |
| perihelion date | 2014 02 12.47800874 | ± 0.01250660 |
| perihelion distance [au] | 4.90113392 | ± 0.00005817 |
| eccentricity | 0.99887337 | ± 0.00003947 |
| argument of perihelion [°] | 271.979771 | ± 0.001081 |
| ascending node [°] | 36.413765 | ± 0.000088 |
| inclination [°] | 83.56133 | ± 0.000164 |
| reciprocal semi-major axis [10-6 au-1] | 229.87 | ± 8.05 |