C/2014 N3 NEOWISE
more info
Comet C/2014 N3 was discovered on 4 July 2014 with Near-Earth Object Wide-field Infrared Survey Explorer, that is more than 8 months before its perihelion passage. This comet was observed until 6 January 2017.
Comet had its closest approach to the Earth on 9 October 2014 (3.30 au), five months before perihelion passage.
Solutions given here are based on data spanning over 2.51 yr in a range of heliocentric distances: 4.45 au – 3.882 au (perihelion) – 6.70 au.
This Oort spike comet suffers moderate planetary perturbations during its passage through the planetary system; these perturbations lead to a more tight future orbit (see future barycentric orbits).

solution description
number of observations 1610
data interval 2014 07 04 – 2017 01 06
data type perihelion within the observation arc (FULL)
data arc selection entire data set (STD)
range of heliocentric distances 4.45 au – 3.88 au (perihelion) – 6.7 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 3164
RMS [arcseconds] 0.39
orbit quality class 1a+
orbital elements (heliocentric ecliptic J2000)
Epoch 2015 02 27
perihelion date 2015 03 13.23322394 ± 0.00019456
perihelion distance [au] 3.88226446 ± 0.00000079
eccentricity 0.99946378 ± 0.00000155
argument of perihelion [°] 353.571249 ± 0.000029
ascending node [°] 19.926866 ± 0.000003
inclination [°] 61.63487 ± 0.000005
recip semi-major axis [10-6 au-1] 138.12 ± 0.40
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