C/2005 E2 McNaught
more info
Comet C/2005 E2 was discovered on 12 March 2005 by Robert H. McNaught (Siding Spring); that is about 11 months before its perihelion passage. It was observed until 3 March 2008 (see picture).
Comet had its closest approach to the Earth on 30 August 2005 (2.006 au), about 5.5 months after its discovery.
Solutions given here are based on data spanning over 2.98 yr in a range of heliocentric distances: 4.42 au – 1.582 au (perihelion) – 7.76 au.
This Oort spike comet suffers notable planetary perturbations during its passage through the planetary system; these perturbations lead to escape the comet from the planetary zone on a hyperbolic orbit with future eccentricity of 1.0040 (see future barycentric orbits).
See also Królikowska 2020

solution description
number of observations 1361
data interval 2005 03 12 – 2008 03 03
data type perihelion within the observation arc (FULL)
data arc selection entire data set (STD)
range of heliocentric distances 4.42 au – 1.52 au (perihelion) – 7.76 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 2697
RMS [arcseconds] 0.65
orbit quality class 1a+
next orbit statistics, both Galactic and stellar perturbations were taken into account
no. of returning VCs in the swarm 0
no. of escaping VCs in the swarm 5001
no. of hyperbolas among escaping VCs in the swarm 5001 *
next reciprocal semi-major axis [10-6 au-1] -2,520.54 – -2,519.63 – -2,518.67
next perihelion distance [au] 3.1835 – 3.1841 – 3.1848
synchronous stop epoch [Myr] 0.381 S
percentage of VCs with qnext < 10100
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.
next orbit statistics, here only the Galactic tide has been included
no. of returning VCs in the swarm 0
no. of escaping VCs in the swarm 5001
no. of hyperbolas among escaping VCs in the swarm 5001 *
next reciprocal semi-major axis [10-6 au-1] -2,520.31 – -2,519.40 – -2,518.44
next perihelion distance [au] 3.6438 – 3.6447 – 3.6456
synchronous stop epoch [Myr] 0.403 S
percentage of VCs with qnext < 10100