C/2009 F4 McNaught
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Comet C/2009 F4 was discovered on 19 March 2009, that is 2.8 yr before perihelion passage, and next was observed 6.4 yr during seven oppositions in a range of heliocentric distances: 8.96 au – 5.455 au (perihelion) – 10.5 au.
Comet had its closest approach to the Earth on 3 June 2011 (5.179 au, almost seven months before perihelion).
NG orbits using full data-arc as well as using pre-perihelion data arc are determinable.
This Oort spike comet suffers a tiny planetary perturbations during its passage through the planetary system that lead to a more tight future orbit (see future barycentric orbit).
See also Królikowska and Dones 2023 and Królikowska and Dybczyński 2017.
Comet had its closest approach to the Earth on 3 June 2011 (5.179 au, almost seven months before perihelion).
NG orbits using full data-arc as well as using pre-perihelion data arc are determinable.
This Oort spike comet suffers a tiny planetary perturbations during its passage through the planetary system that lead to a more tight future orbit (see future barycentric orbit).
See also Królikowska and Dones 2023 and Królikowska and Dybczyński 2017.
solution description | ||
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number of observations | 1213 | |
data interval | 2009 03 19 – 2015 08 20 | |
data type | perihelion within the observation arc (FULL) | |
data arc selection | entire data set (STD) | |
range of heliocentric distances | 8.96 au – 5.46 au (perihelion) – 10.5 au | |
type of model of motion | NC - non-gravitational orbits for symmetric CO-g(r)-like function | |
data weighting | YES | |
number of residuals | 2353 | |
RMS [arcseconds] | 0.49 | |
orbit quality class | 1a+ |
orbital elements (barycentric ecliptic J2000) | ||
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Epoch | 2319 04 15 | |
perihelion date | 2012 01 01.66067033 | ± 0.00112988 |
perihelion distance [au] | 5.45129469 | ± 0.00000852 |
eccentricity | 0.99936005 | ± 0.00000515 |
argument of perihelion [°] | 260.350784 | ± 0.000135 |
ascending node [°] | 53.555399 | ± 0.000013 |
inclination [°] | 79.35229 | ± 0.00001 |
reciprocal semi-major axis [10-6 au-1] | 117.39 | ± 0.95 |
file containing 5001 VCs swarm |
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2009f4bc.bpl |
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).