C/2021 L3 Borisov
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Comet C/2021 L3 was discovered on 12 January 2021 by MARGO, Nauchnyi, that is more than a year before its perihelion passage.
Comet had its closest approach to the Earth on 23 November 2021 (8.33 au), about 2.5 months before its perihelion passage.
GR solution given here is based on data span over 3.85 yr in a range of heliocentric distances: 8.59 au – 8.46 au (perihelion) – 9.64 au.
This long-period comet suffers small planetary perturbations during its passage through the planetary system that lead to a more loose future orbit; and its original and future orbits have semimajor axes of about 9,100 au and 90,000 au, respectively.
Comet had its closest approach to the Earth on 23 November 2021 (8.33 au), about 2.5 months before its perihelion passage.
GR solution given here is based on data span over 3.85 yr in a range of heliocentric distances: 8.59 au – 8.46 au (perihelion) – 9.64 au.
This long-period comet suffers small planetary perturbations during its passage through the planetary system that lead to a more loose future orbit; and its original and future orbits have semimajor axes of about 9,100 au and 90,000 au, respectively.
| solution description | ||
|---|---|---|
| number of observations | 218 | |
| data interval | 2021 06 08 – 2024 04 13 | |
| data type | perihelion within the observation arc (FULL) | |
| data arc selection | entire data set (STD) | |
| range of heliocentric distances | 8.59 au – 8.46 au (perihelion) – 9.64 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 | 427 | |
| RMS [arcseconds] | 0.35 | |
| orbit quality class | 1a | |
| orbital elements (barycentric ecliptic J2000) | ||
|---|---|---|
| Epoch | 1709 09 19 | |
| perihelion date | 2022 02 12.15323174 | ± 0.00395398 |
| perihelion distance [au] | 8.45161927 | ± 0.00001427 |
| eccentricity | 0.99907209 | ± 0.00000957 |
| argument of perihelion [°] | 91.617631 | ± 0.000208 |
| ascending node [°] | 345.038393 | ± 0.000020 |
| inclination [°] | 78.58083 | ± 0.000011 |
| reciprocal semi-major axis [10-6 au-1] | 109.79 | ± 1.13 |
| file containing 5001 VCs swarm |
|---|
| 2021l3a5.bmi |
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 original swarm including 5001 VCs. Each density map is given in logarithmic scale presented on the right in the individual panel.