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 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 21 February 2020.
Comet had its closest approach to the Earth on 28 February 2016 (7.167 au), about 2 months before its perihelion passage.
Solutions given here are based on data spanning over 6.87 yr in a range of heliocentric distances: 10.46 au – 8.149 au (perihelion) – 11.49 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).
See also Królikowska and Dones 2023.
Comet had its closest approach to the Earth on 28 February 2016 (7.167 au), about 2 months before its perihelion passage.
Solutions given here are based on data spanning over 6.87 yr in a range of heliocentric distances: 10.46 au – 8.149 au (perihelion) – 11.49 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).
See also Królikowska and Dones 2023.
solution description | ||
---|---|---|
number of observations | 163 | |
data interval | 2013 04 08 – 2016 04 29 | |
data arc selection | data generally limited to pre-perihelion (PRE) | |
range of heliocentric distances | 10.46 au – 8.15au | |
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 | 311 | |
RMS [arcseconds] | 0.33 | |
orbit quality class | 1a |
orbital elements (heliocentric ecliptic J2000) | ||
---|---|---|
Epoch | 2016 05 12 | |
perihelion date | 2016 04 30.76393837 | ± 0.00736404 |
perihelion distance [au] | 8.14881651 | ± 0.00001793 |
eccentricity | 1.00251602 | ± 0.00001273 |
argument of perihelion [°] | 2.848417 | ± 0.000449 |
ascending node [°] | 156.980464 | ± 0.000011 |
inclination [°] | 128.509334 | ± 0.000033 |
reciprocal semi-major axis [10-6 au-1] | -308.76 | ± 1.56 |
![](media/img/2015d3/2015d3paba_res_weights.png)
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).