C/1912 R1 Gale
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Comet C/1912 R1 was discovered on 9 September 1912 by Walter Frederick Gale (Sydney, New Aouth Wales, Australia), that is about one month before its perihelion passage, and it was last seen on 26 May 1913 [Kronk, Cometography: Volume 3].
This comet made its closest approach to the Earth on 14 September 1907 (0.920 au), that is five days after its discovery.
Solution given here is based on data spanning over 0.704 yr in a range of heliocentric distances from 1.366 au through perihelion (0.716 au) to 1.747 au.
This Oort spike comet suffers moderate planetary perturbations during its passage through the planetary system that lead to escape the comet from the planetary zone on a hyperbolic orbit (see future barycentric orbit).
More details in Królikowska et al. 2014.
This comet made its closest approach to the Earth on 14 September 1907 (0.920 au), that is five days after its discovery.
Solution given here is based on data spanning over 0.704 yr in a range of heliocentric distances from 1.366 au through perihelion (0.716 au) to 1.747 au.
This Oort spike comet suffers moderate planetary perturbations during its passage through the planetary system that lead to escape the comet from the planetary zone on a hyperbolic orbit (see future barycentric orbit).
More details in Królikowska et al. 2014.
| solution description | ||
|---|---|---|
| number of observations | 935 | |
| data interval | 1912 09 11 – 1913 05 26 | |
| data type | significantly more measurements after perihelion (POST+) | |
| data arc selection | entire data set (STD) | |
| range of heliocentric distances | 0.86 au – 0.72 au (perihelion) – 3.59 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 | 1670 | |
| RMS [arcseconds] | 2.48 | |
| orbit quality class | 1b | |
| orbital elements (barycentric ecliptic J2000) | ||
|---|---|---|
| Epoch | 2206 05 17 | |
| perihelion date | 1912 10 05.28455857 | ± 0.00005532 |
| perihelion distance [au] | 0.71584674 | ± 0.00000088 |
| eccentricity | 1.00026544 | ± 0.00000377 |
| argument of perihelion [°] | 25.598506 | ± 0.000110 |
| ascending node [°] | 298.263151 | ± 0.000111 |
| inclination [°] | 79.808281 | ± 0.000084 |
| reciprocal semi-major axis [10-6 au-1] | -370.81 | ± 5.27 |
| file containing 5001 VCs swarm |
|---|
| 1912r1a5.bpl |
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.
Six 2D-projections of the 6D space of future swarm including 5001 VCs. Each density map is given in logarithmic scale presented on the right in the individual panel.