C/2006 S3 LONEOS
more info
Comet C/2006 S3 was discovered on 19 November 2006 by LONEOS at heliocentric dostance of 14.3 au as an object with cometary apperance and soon a few prediscovery observations taken by Catalina Sky Survey on 17 September 2006 were found [IAUC 8752, 2006 September 21]. Later, more prediscovery observations were reported (taken on 29 August 2006 and 13 October 1999). Comet passed perihelion in mid-April 2012 and since its discovery was observed during many consecutive oppositions (see figure). Currently, data arc extends up to 16 January 2018, and all are available at MPC.
Solutions given here are based on data covered 16.6 yr in a range of heliocentric distances: 26.1 au – 5.131 au (perihelion) – 11.4 au.
Comet had its closest approach to the Earth on 1 June 2012 (4.141 au, 1.5 months after perihelion).
Nongravitational orbit is determinable; however, some trends in residuals with time are still visible.
This Oort spike comet suffers slight planetary perturbations during its passage through the planetary system; however, they lead to escape of the comet from the solar system on hiperbolic orbit (see future barycentric orbit).

See also Królikowska and Dybczyński 2017.

solution description
number of observations 6480
data interval 1999 10 13 – 2016 05 05
data type perihelion within the observation arc (FULL)
data arc selection entire data set (STD)
range of heliocentric distances 26.1 au – 5.13 au (perihelion) – 11.4 au
type of model of motion NC - non-gravitational orbits for symmetric CO-g(r)-like function
data weighting YES
number of residuals 10589
RMS [arcseconds] 0.50
orbit quality class 1a+
orbital elements (heliocentric ecliptic J2000)
Epoch 2012 04 23
perihelion date 2012 04 16.32003390 ± 0.00016883
perihelion distance [au] 5.13111870 ± 0.00000135
eccentricity 1.00349158 ± 0.00000159
argument of perihelion [°] 140.128874 ± 0.000023
ascending node [°] 38.370826 ± 0.000009
inclination [°] 166.032639 ± 0.000003
recip semi-major axis [10-6 au-1] -680.47 ± 0.31
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
non-gravitational parameters
A1 [10-8au/day2] 1.589 ± 0.036
A2 [10-8au/day2] 1.714 ± 0.041
A3 [10-8au/day2] 0.1796 ± 0.0066
m -2.00
n 3.000
k -2.6000
r0 [au] 10.000
α 0.0100