C/2018 B1 Lemmon
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Comet C/2018 B1 was discovered on 25 January 2018, about two months before its perihelion passage; later a few prediscovery measurements going back to 16 January 2017 were found. This comet was last seen on 31 October 2019.
Solution given here is based on data span over 2.79 yr in the range of heliocentric distances from: 6.08 au – 5.12 au (perihelion) – 6.69 au.
This Oort spike comet suffers small planetary perturbations during its passage through the planetary system that lead to a more tight future orbit (see future barycentric orbit).
Solution given here is based on data span over 2.79 yr in the range of heliocentric distances from: 6.08 au – 5.12 au (perihelion) – 6.69 au.
This Oort spike comet suffers small planetary perturbations during its passage through the planetary system that lead to a more tight future orbit (see future barycentric orbit).
| solution description | ||
|---|---|---|
| number of observations | 320 | |
| data interval | 2017 01 16 – 2019 10 31 | |
| data type | perihelion within the observation arc (FULL) | |
| data arc selection | entire data set (STD) | |
| range of heliocentric distances | 6.08 au – 5.12 au (perihelion) – 6.69 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 | 634 | |
| RMS [arcseconds] | 0.41 | |
| orbit quality class | 1a+ | |
| orbital elements (heliocentric ecliptic J2000) | ||
|---|---|---|
| Epoch | 2018 03 23 | |
| perihelion date | 2018 03 30.58357229 | ± 0.00034957 |
| perihelion distance [au] | 5.11687043 | ± 0.00000264 |
| eccentricity | 1.00296602 | ± 0.00000351 |
| argument of perihelion [°] | 68.355689 | ± 0.000055 |
| ascending node [°] | 133.158285 | ± 0.000040 |
| inclination [°] | 162.423002 | ± 0.000006 |
| reciprocal semi-major axis [10-6 au-1] | -579.65 | ± 0.69 |