C/2016 N4 Master
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Comet C/2016 N4 was discovered on 15 July 2016 with Mobile Astronomical System of the Telescope-Robots (MASTER), that is about months after its perihelion passage.
Some prediscovery images of this comet were found: taken on 11 September 2015 by ISON-SSO Observatory (Siding Spring).
Solutions given here are based on data spanning over 4.54 yr in a range of heliocentric distances: 7.14 au – 3.199 au (perihelion) – 8.37 au.
NG orbits using full data-arc as well as independently using pre-perihelion and post-perihelion data are determinable.
See also Królikowska and Dones 2023.
solution description | ||
---|---|---|
number of observations | 2075 | |
data interval | 2015 09 11 – 2020 03 26 | |
data type | perihelion within the observation arc (FULL) | |
data arc selection | entire data set (STD) | |
range of heliocentric distances | 7.14 au – 3.20 au (perihelion) – 8.37 au | |
detectability of NG effects in the comet's motion | comet with determinable NG~orbit | |
type of model of motion | GR - gravitational orbit | |
data weighting | YES | |
number of residuals | 4096 | |
RMS [arcseconds] | 0.51 | |
orbit quality class | 1a+ |
orbital elements (heliocentric ecliptic J2000) | ||
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Epoch | 2017 09 04 | |
perihelion date | 2017 09 16.59594307 | ± 0.00004831 |
perihelion distance [au] | 3.19912005 | ± 0.00000026 |
eccentricity | 0.99940043 | ± 0.00000097 |
argument of perihelion [°] | 55.955029 | ± 0.000009 |
ascending node [°] | 354.031375 | ± 0.000004 |
inclination [°] | 72.557297 | ± 0.000004 |
reciprocal semi-major axis [10-6 au-1] | 187.42 | ± 0.30 |
![](media/img/2016n4/2016n4kakn_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).