C/2011 Q1 PANSTARRS
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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).
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 | |
| orbital elements (heliocentric ecliptic J2000) | ||
|---|---|---|
| Epoch | 2011 07 18 | |
| perihelion date | 2011 06 29.33476597 | ± 0.02287524 |
| perihelion distance [au] | 6.78003103 | ± 0.00002991 |
| eccentricity | 0.99797331 | ± 0.00002969 |
| argument of perihelion [°] | 135.916991 | ± 0.001823 |
| ascending node [°] | 142.245646 | ± 0.000086 |
| inclination [°] | 94.860033 | ± 0.00011 |
| reciprocal semi-major axis [10-6 au-1] | 298.92 | ± 4.38 |
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.