C/1992 A1 Helin-Alu
more info
Comet C/1992 A1 was discovered on 9 January 1992 by Eleanor F. Helin and Jeff Alu during the course of the near-Earth asteroid survey (Mount Palomar, California, USA),that is about 6 months before its perihelion passage. This comet was last observed in the second half of March 1993.
Comet had its closest approach to the Earth on 6 February 1992 (2.448 au), about a month after its discovery.
Solution given here is based on data spanning over 1.20 yr in a range of heliocentric distances: 3.50 au – 3.02 au (perihelion) – 3.92 au.
This Oort spike comet suffers tiny planetary perturbations during its passage through the planetary system; however, these perturbations lead to escape the comet on hyperbolic orbit from the planetary zone.
See also Królikowska 2020.
Comet had its closest approach to the Earth on 6 February 1992 (2.448 au), about a month after its discovery.
Solution given here is based on data spanning over 1.20 yr in a range of heliocentric distances: 3.50 au – 3.02 au (perihelion) – 3.92 au.
This Oort spike comet suffers tiny planetary perturbations during its passage through the planetary system; however, these perturbations lead to escape the comet on hyperbolic orbit from the planetary zone.
See also Królikowska 2020.
solution description | ||
---|---|---|
number of observations | 56 | |
data interval | 1992 01 09 – 1993 03 23 | |
data type | perihelion within the observation arc (FULL) | |
data arc selection | entire data set (STD) | |
range of heliocentric distances | 3.5 au – 3.02 au (perihelion) – 3.92 au | |
detectability of NG effects in the comet's motion | NG effects not determinable | |
type of model of motion | GR - gravitational orbit | |
data weighting | NO | |
number of residuals | 107 | |
RMS [arcseconds] | 1.34 | |
orbit quality class | 1b |
orbital elements (barycentric ecliptic J2000) | ||
---|---|---|
Epoch | 1690 05 01 | |
perihelion date | 1992 07 09.86001530 | ± 0.00619148 |
perihelion distance [au] | 3.00788450 | ± 0.00002359 |
eccentricity | 0.99987088 | ± 0.00006989 |
argument of perihelion [°] | 240.114133 | ± 0.001256 |
ascending node [°] | 288.910208 | ± 0.000161 |
inclination [°] | 39.308702 | ± 0.000229 |
reciprocal semi-major axis [10-6 au-1] | 42.93 | ± 23.24 |
file containing 5001 VCs swarm |
---|
1992a1a1.bmi |