C/2012 LP26 Palomar
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Comet C/2012 LP26 was discovered on 10 June 2012 with Palomar Transient Factory survey, that is about 3.2 years before its perihelion passage. Soon, it was found on earlier images taken on 23 May 2012 with the Mount Lemmon Survey. It was observed until 5 October 2018.
Comet had its closest approach to the Earth on 8 June 2013 (7.511 au), about 2 months before its perihelion passage.
Solution given here is based on data spanning over 5.62 yr in a range of heliocentric distances: 10.02 au – 6.536 au (perihelion) – 8.68 au (5 January 2018).
This Oort spike comet suffers small planetary perturbations during its passage through the planetary system; however, these perturbations lead to escape the comet from the planetary zone on a hyperbolic orbit (see future barycentric orbit).
Comet had its closest approach to the Earth on 8 June 2013 (7.511 au), about 2 months before its perihelion passage.
Solution given here is based on data spanning over 5.62 yr in a range of heliocentric distances: 10.02 au – 6.536 au (perihelion) – 8.68 au (5 January 2018).
This Oort spike comet suffers small planetary perturbations during its passage through the planetary system; however, these perturbations lead to escape the comet from the planetary zone on a hyperbolic orbit (see future barycentric orbit).
| solution description | ||
|---|---|---|
| number of observations | 438 | |
| data interval | 2012 05 23 – 2018 01 05 | |
| data type | perihelion within the observation arc (FULL) | |
| data arc selection | entire data set (STD) | |
| range of heliocentric distances | 10.02 au – 6.54 au (perihelion) – 8.68 au | |
| 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 | 864 | |
| RMS [arcseconds] | 0.45 | |
| orbit quality class | 1a+ | |
| orbital elements (heliocentric ecliptic J2000) | ||
|---|---|---|
| Epoch | 2015 08 06 | |
| perihelion date | 2015 08 16.60855374 | ± 0.00041063 |
| perihelion distance [au] | 6.53606263 | ± 0.00000238 |
| eccentricity | 0.99920682 | ± 0.00000312 |
| argument of perihelion [°] | 145.155966 | ± 0.000033 |
| ascending node [°] | 153.987532 | ± 0.000018 |
| inclination [°] | 25.379716 | ± 0.000008 |
| recip semi-major axis [10-6 au-1] | 121.35 | ± 0.48 |
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.