C/2019 L3 ATLAS
more info
Comet C/2019 L3 was discovered on 10 June 2019, about 2.5 yr before its perihelion passage. In the moment of orbit determination, this comet was still observed.

Currently, solutions (GR and NG) given here are based on pre-perihelion data and span over 2.58 yr in a range of heliocentric distances from 8.46 au to 3.56 au.

This is Oort spike comet.
solution description
number of observations 631
data interval 2019 06 10 – 2022 01 09
data arc selection data generally limited to pre-perihelion (PRE)
range of heliocentric distances 8.46 au – 3.56 au (perihelion) – 3.55 au
detectability of NG effects in the comet's motion comet with NG effects strongly manifested in positional data fitting
type of model of motion GR - gravitational orbit
data weighting YES
number of residuals 7225
RMS [arcseconds] 0.32
orbit quality class 1a+
orbital elements (barycentric ecliptic J2000)
Epoch 1719 01 10
perihelion date 2022 01 09.46443507 ± 0.00012803
perihelion distance [au] 3.55497624 ± 0.00000093
eccentricity 0.99987468 ± 0.00000082
argument of perihelion [°] 171.642883 ± 0.000028
ascending node [°] 290.881221 ± 0.000004
inclination [°] 48.396079 ± 0.000002
reciprocal semi-major axis [10-6 au-1] 35.25 ± 0.23
file containing 5001 VCs swarm
2019l3pa.bmi
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.