C/2013 G5 Catalina
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Comet C/2013 G5 was discovered on 13 April 2013 by R.A. Kowalski et al. (Catalina Sky Survey) and was followed only less than two months to June 9, that is only on pre-perihelion leg of its orbit (perihelion passage were predicted in September 1 in a heliocentric perihelion distance of 0.93 au). The closest approach to the Earth was expected on 14 September (0.402 au).
Sekanina (2019) concluded that this comet perished during its perihelion passage (see his Table 5).
GR solution given here is based on data spanning over 0.17 yr in the pre perihelion leg of orbit in the range of heliocentric distances from 2.47 au to 1.68 au. Due to very short data arc the NG orbit is not possible to obtain.
This is comet outside the Oort spike with semimajor axis of about 2680 au. The future orbit is not given because the comet disintegrated.
Sekanina (2019) concluded that this comet perished during its perihelion passage (see his Table 5).
GR solution given here is based on data spanning over 0.17 yr in the pre perihelion leg of orbit in the range of heliocentric distances from 2.47 au to 1.68 au. Due to very short data arc the NG orbit is not possible to obtain.
This is comet outside the Oort spike with semimajor axis of about 2680 au. The future orbit is not given because the comet disintegrated.
| solution description | ||
|---|---|---|
| number of observations | 123 | |
| data interval | 2013 04 07 – 2013 06 09 | |
| data type | observed only before perihelion (PRE) | |
| data arc selection | entire data set (STD) | |
| range of heliocentric distances | 2.47 au – 1.68au | |
| 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 | 226 | |
| RMS [arcseconds] | 0.47 | |
| orbit quality class | 2b | |
| 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] | 297.30 – 373.63 – 447.28 | |
| previous perihelion distance [au] | 0.93032 – 0.93094 – 0.93264 | |
| previous aphelion distance [103 au] | 4.5 – 5.4 – 6.7 | |
| time interval to previous perihelion [Myr] | 0.11 – 0.14 – 0.19 | |
| percentage of VCs with qprev < 10 | 100 | |
Upper panel: 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.
Middle panel(s): O-C diagram for a given solution (sometimes in comparison to another solution available in CODE), where residuals in right ascension are shown using magenta dots and in declination by blue open circles.
Lowest panel: Relative weights for a given data set(s).
Middle panel(s): O-C diagram for a given solution (sometimes in comparison to another solution available in CODE), where residuals in right ascension are shown using magenta dots and in declination by blue open circles.
Lowest panel: Relative weights for a given data set(s).
| previous_g 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] | 297.30 – 373.63 – 447.28 | |
| previous perihelion distance [au] | 0.93037 – 0.93101 – 0.93273 | |
| previous aphelion distance [103 au] | 4.5 – 5.4 – 6.7 | |
| time interval to previous perihelion [Myr] | 0.11 – 0.14 – 0.19 | |
| percentage of VCs with qprev < 10 | 100 | |