C/2019 NJ3 Lemmon
more info
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 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
orbital elements (barycentric ecliptic J2000)
Epoch 2324 12 24
perihelion date 2020 10 21.17882698 ± 0.00236275
perihelion distance [au] 4.36057620 ± 0.00001244
eccentricity 0.99995279 ± 0.00001103
argument of perihelion [°] 246.793885 ± 0.000348
ascending node [°] 142.514974 ± 0.000038
inclination [°] 99.417799 ± 0.000036
reciprocal semi-major axis [10-6 au-1] 10.83 ± 2.53
file containing 5001 VCs swarm
2019nja1.bpl
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.