C/2011 Q1 PANSTARRS
more info
Comet C/2011 Q1 was discovered on 20 August 2011 by Pan-STARRS 1 telescope (Haleakala), that is about 1.5 month after its perihelion passage. Soon, C/2011 Q1 was found on earlier images taken on 17 August 2011 with the Pan-STARRS 1 survey. It was occasionally observed less than a year.
Comet had its closest approach to the Earth on 21 August 2011 (6.046 au), a day after its discovery.
Solution given here is based on data spanning over 0.86 yr in a range of heliocentric distances from 6.79 au to 7.18 au.
This comet have orignal semimajor axis shorter than 10000 au; it suffers a tiny planetary perturbations during its passage through the planetary system that lead to a more tight future orbit. (see future barycentric orbit).

solution description
number of observations 59
data interval 2011 08 17 – 2012 06 25
data type observed only after perihelion (POST)
data arc selection entire data set (STD)
range of heliocentric distances 6.79 au – 7.18au
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 106
RMS [arcseconds] 0.29
orbit quality class 1b
next orbit statistics, both Galactic and stellar perturbations were taken into account
no. of returning VCs in the swarm 5001 *
no. of escaping VCs in the swarm 0
no. of hyperbolas among escaping VCs in the swarm 0
next reciprocal semi-major axis [10-6 au-1] 424.61 – 430.25 – 435.75
next perihelion distance [au] 6.7783 – 6.7784 – 6.7785
next aphelion distance [103 au] 4.58 – 4.64 – 4.7
time interval to next perihelion [Myr] 0.11 – 0.112 – 0.114
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 5001 *
no. of escaping VCs in the swarm 0
no. of hyperbolas among escaping VCs in the swarm 0
next reciprocal semi-major axis [10-6 au-1] 424.61 – 430.26 – 435.75
next perihelion distance [au] 6.77477 – 6.77481 – 6.77485
next aphelion distance [103 au] 4.58 – 4.64 – 4.7
time interval to next perihelion [Myr] 0.11 – 0.112 – 0.114
percentage of VCs with qnext < 10100