C/2019 NJ3 Lemmon
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Comet C/2019 NJ3 was discovered on 5 July 2019 as an asteroidal objects, almost 1.5 yr before its perihelion passage. Its cometary features was later detected. This comet was observed to 18 February 2021.
Solution given here is based data span over 1.71 yr in a range of heliocentric distances: 5.95 au – 4.36 au (perihelion) – 4.47 au.
This Oort spike comet suffers tiny planetary perturbations during its passage through the planetary system; its future orbit has very large semimajor axis at the level of 100,000 au.
Solution given here is based data span over 1.71 yr in a range of heliocentric distances: 5.95 au – 4.36 au (perihelion) – 4.47 au.
This Oort spike comet suffers tiny planetary perturbations during its passage through the planetary system; its future orbit has very large semimajor axis at the level of 100,000 au.
| solution description | ||
|---|---|---|
| number of observations | 52 | |
| data interval | 2019 06 05 – 2021 02 18 | |
| data type | perihelion within the observation arc (FULL) | |
| data arc selection | entire data set (STD) | |
| range of heliocentric distances | 5.95 au – 4.36 au (perihelion) – 4.47 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 | 99 | |
| RMS [arcseconds] | 0.44 | |
| orbit quality class | 1a | |
| 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] | 34.45 – 38.26 – 42.86 | |
| previous perihelion distance [au] | 300 – 390 – 490 | |
| previous aphelion distance [103 au] | 46 – 52 – 58 | |
| time interval to previous perihelion [Myr] | 3.8 – 4.3 – 5 | |
| percentage of VCs with qprev > 20 | 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] | 35.18 – 38.37 – 41.71 | |
| previous perihelion distance [au] | 4.1 – 5.1 – 7.5 | |
| previous aphelion distance [103 au] | 48 – 52.1 – 56.8 | |
| time interval to previous perihelion [Myr] | 3.7 – 4.2 – 4.7 | |
| percentage of VCs with qprev < 10 | 98 | |
| percentage of VCs with 10 < qprev < 20 | 2 | |