C/2006 L2 McNaught
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Comet C/2006 L2 was discovered on 14 June 2006 by Robert H. McNaught (Siding Spring Survey); that is about 5 months before its perihelion passage. It was observed until 7 July 2007 (see picture).
Comet had its closest approach to the Earth on the day of its discovery (1.870 au).
Here, two solutions based on entire data set (a6 and n5) are very similar quality, and in Królikowska and Dybczyński 2013 we recomended pure GR solution for past and future orbital evolution. Both these solutions are based on data spanning over 1.06 yr in a range of heliocentric distances: 2.74 au – 1.994 au (perihelion) – 3.31 au. Here, we chose the NG solution as preferred;see Królikowska 2020.
This Oort spike comet suffers small planetary perturbations during its passage through the planetary system; these perturbations lead to escape the comet from the planetary zone on a hyperbolic orbit (see future barycentric orbits).
Comet had its closest approach to the Earth on the day of its discovery (1.870 au).
Here, two solutions based on entire data set (a6 and n5) are very similar quality, and in Królikowska and Dybczyński 2013 we recomended pure GR solution for past and future orbital evolution. Both these solutions are based on data spanning over 1.06 yr in a range of heliocentric distances: 2.74 au – 1.994 au (perihelion) – 3.31 au. Here, we chose the NG solution as preferred;see Królikowska 2020.
This Oort spike comet suffers small planetary perturbations during its passage through the planetary system; these perturbations lead to escape the comet from the planetary zone on a hyperbolic orbit (see future barycentric orbits).
| solution description | ||
|---|---|---|
| number of observations | 254 | |
| data interval | 2006 06 14 – 2006 10 09 | |
| data arc selection | data generally limited to pre-perihelion (PRE) | |
| range of heliocentric distances | 2.74 au – 2.06au | |
| 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 | 498 | |
| RMS [arcseconds] | 0.37 | |
| orbit quality class | 1b | |
| previous 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 | |
| previous reciprocal semi-major axis [10-6 au-1] | 58.01 – 63.61 – 69.62 | |
| previous perihelion distance [au] | 2.46 – 2.69 – 3.05 | |
| previous aphelion distance [103 au] | 28.7 – 31.4 – 34.5 | |
| time interval to previous perihelion [Myr] | 1.7 – 2 – 2.3 | |
| percentage of VCs with qprev < 10 | 99 | |
| percentage of VCs with 10 < qprev < 20 | 1 | |
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.
| previous 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 | |
| previous reciprocal semi-major axis [10-6 au-1] | 58.00 – 63.60 – 69.62 | |
| previous perihelion distance [au] | 2.34 – 2.52 – 2.81 | |
| previous aphelion distance [103 au] | 28.7 – 31.4 – 34.5 | |
| time interval to previous perihelion [Myr] | 1.7 – 2 – 2.3 | |
| percentage of VCs with qprev < 10 | 100 | |