C/2014 L5 Lemmon
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Comet C/2014 L5 was discovered on 9 June 2014 with with Mount Lemmon Survey, that is 5.5 months before its perihelion passage. Next, it was found on earlier images taken on 12 October 2013 with the Mount Lemmon Survey. This comet was observed until 14 September 2015.
Comet had its closest approach to the Earth on 2 October 2014 (5.4-6 au), almost 2 months before its perihelion passage.
Solution given here is based on data spanning over 1.92 yr in a range of heliocentric distances: 6.81 au – 6.203 au (perihelion) – 6.52 au.
This comet suffers small planetary perturbations during its passage through the planetary system; these perturbations lead to less tight future orbit with semimajor axis smaller than 10,000 au (see future barycentric orbits).

solution description
number of observations 77
data interval 2013 10 12 – 2015 09 14
data type perihelion within the observation arc (FULL)
data arc selection entire data set (STD)
range of heliocentric distances 6.81 au – 6.20 au (perihelion) – 6.52 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 133
RMS [arcseconds] 0.40
orbit quality class 1a
orbital elements (heliocentric ecliptic J2000)
Epoch 2014 12 09
perihelion date 2014 11 26.35276252 ± 0.00335704
perihelion distance [au] 6.20315800 ± 0.00001342
eccentricity 1.00271317 ± 0.00001568
argument of perihelion [°] 45.610667 ± 0.000298
ascending node [°] 35.686581 ± 0.000043
inclination [°] 122.807987 ± 0.000045
recip semi-major axis [10-6 au-1] -437.38 ± 2.52
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