C/2015 D3 PANSTARRS
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Comet C/2015 D3 was discovered on 19 February 2015 with Pan-STARRS 1 telescope (Haleakala), that is about 2.5 months after its perihelion passage. Some prediscovery images of this comet were found: taken on 17 February 2015 by Space Surveillance Telescope (Atom Site) and 8 April 2013 by Siding Spring Survey. This comet was observed until 26 October 2019 (is still observable).
Comet had its closest approach to the Earth on 28 February 2016 (7.167 au), about 2 months before its perihelion passage.
Solution given here is based on data spanning over 4.85 yr in a range of heliocentric distances: 10.46 au – 8.149 au (perihelion) – 9.03 au.
This Oort spike comet suffers slight planetary perturbations during its passage through the planetary system; however, these perturbations likely lead to escape the comet from the planetary zone on a hyperbolic orbit (see future barycentric orbits).
Comet had its closest approach to the Earth on 28 February 2016 (7.167 au), about 2 months before its perihelion passage.
Solution given here is based on data spanning over 4.85 yr in a range of heliocentric distances: 10.46 au – 8.149 au (perihelion) – 9.03 au.
This Oort spike comet suffers slight planetary perturbations during its passage through the planetary system; however, these perturbations likely lead to escape the comet from the planetary zone on a hyperbolic orbit (see future barycentric orbits).
| solution description | ||
|---|---|---|
| number of observations | 282 | |
| data interval | 2013 04 08 – 2018 02 13 | |
| data type | perihelion within the observation arc (FULL) | |
| data arc selection | entire data set (STD) | |
| range of heliocentric distances | 10.46 au – 8.15 au (perihelion) – 9.03 au | |
| 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 | 549 | |
| RMS [arcseconds] | 0.33 | |
| orbit quality class | 1a+ | |
| orbital elements (heliocentric ecliptic J2000) | ||
|---|---|---|
| Epoch | 2016 05 12 | |
| perihelion date | 2016 04 30.78880394 | ± 0.00118321 |
| perihelion distance [au] | 8.14877530 | ± 0.00000841 |
| eccentricity | 1.00249983 | ± 0.00000711 |
| argument of perihelion [°] | 2.849893 | ± 0.000066 |
| ascending node [°] | 156.980463 | ± 0.000006 |
| inclination [°] | 128.509312 | ± 0.000013 |
| recip semi-major axis [10-6 au-1] | -306.77 | ± 0.87 |