C/2019 L3 ATLAS
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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 (heliocentric ecliptic J2000)
Epoch 2022 01 21
perihelion date 2022 01 09.62075615 ± 0.00012557
perihelion distance [au] 3.55450212 ± 0.00000095
eccentricity 1.00160000 ± 0.00000083
argument of perihelion [°] 171.610955 ± 0.000028
ascending node [°] 290.790053 ± 0.000004
inclination [°] 48.361237 ± 0.000002
reciprocal semi-major axis [10-6 au-1] -450.13 ± 0.23