C/2013 G3 PANSTARRS
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Comet C/2013 G3 was discovered on 10 April 2013 with Pan-STARRS 1 telescope (Haleakala), that is 1.6 yr before its perihelion passage. It was observed during four oppositions until 23 December 2016.
Comet had its closest approach to the Earth on 19 May 2014 (3.448 au), about 6 months before perihelion passage.
Solutions given here are based on data spanning over 3.70 yr in a range of heliocentric distances: 6.20 au – 3.852 au (perihelion) – 7.34 au.
NG orbit using full data-arc is determinable.
This Oort spike comet suffered moderate planetary perturbations during its passage through the planetary system; these perturbations led to escape the comet from the planetary zone on a hyperbolic orbit (see future barycentric orbits).
See also Królikowska and Dones 2023.
Comet had its closest approach to the Earth on 19 May 2014 (3.448 au), about 6 months before perihelion passage.
Solutions given here are based on data spanning over 3.70 yr in a range of heliocentric distances: 6.20 au – 3.852 au (perihelion) – 7.34 au.
NG orbit using full data-arc is determinable.
This Oort spike comet suffered moderate planetary perturbations during its passage through the planetary system; these perturbations led to escape the comet from the planetary zone on a hyperbolic orbit (see future barycentric orbits).
See also Królikowska and Dones 2023.
| solution description | ||
|---|---|---|
| number of observations | 912 | |
| data interval | 2013 04 10 – 2016 12 23 | |
| data type | perihelion within the observation arc (FULL) | |
| data arc selection | entire data set (STD) | |
| range of heliocentric distances | 6.2 au – 3.85 au (perihelion) – 7.34 au | |
| type of model of motion | NC - non-gravitational orbits for symmetric CO-g(r)-like function | |
| data weighting | YES | |
| number of residuals | 1808 | |
| RMS [arcseconds] | 0.31 | |
| orbit quality class | 1a+ | |
| orbital elements (heliocentric ecliptic J2000) | ||
|---|---|---|
| Epoch | 2014 12 09 | |
| perihelion date | 2014 11 15.19294308 | ± 0.00036477 |
| perihelion distance [au] | 3.85217984 | ± 0.00000270 |
| eccentricity | 1.00051675 | ± 0.00000380 |
| argument of perihelion [°] | 76.497972 | ± 0.000073 |
| ascending node [°] | 208.125620 | ± 0.000010 |
| inclination [°] | 64.669357 | ± 0.000009 |
| reciprocal semi-major axis [10-6 au-1] | -134.14 | ± 0.98 |
Upper panel: 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.
Middle panel(s): O-C diagram for a given solution (sometimes in comparison to another solution available in CODE), where residuals in right ascension are shown using magenta dots and in declination by blue open circles.
Lowest panel: Relative weights for a given data set(s).
Middle panel(s): O-C diagram for a given solution (sometimes in comparison to another solution available in CODE), where residuals in right ascension are shown using magenta dots and in declination by blue open circles.
Lowest panel: Relative weights for a given data set(s).
| non-gravitational parameters | ||
|---|---|---|
| A1 [10-8au/day2] | 0.4856 | ± 0.0753 |
| A2 [10-8au/day2] | 0.23671 | ± 0.12319 |
| A3 [10-8au/day2] | 0.35256 | ± 0.01333 |
| m | -2.00 | |
| n | 3.000 | |
| k | -2.6000 | |
| r0 [au] | 10.000 | |
| α | 0.0100 | |