C/2019 Q1 Lemmon
more info
Comet C/2019 Q1 was discovered on 28 August 2019, almost one year before its perihelion passage. Later two series of pre-discovery observations were found from 2 January 2019 and 10 November 2018.

Solutions (GR and NG) given here are based on data span over 2.56 yr in a range of heliocentric distances: 6.80 au – 5.00 au (perihelion) – 5.56 au. Orbits based on pre-perihelion and post-perihelion data independently were also obtained.

This Oort spike comet suffers small planetary perturbations during its passage through the planetary system; however, they lead to escape this comet from the solar system on hyperbolic orbit (see future barycentric orbits).
solution description
number of observations 247
data interval 2018 11 10 – 2021 06 04
data type perihelion within the observation arc (FULL)
data arc selection entire data set (STD)
range of heliocentric distances 6.8 au – 5.00 au (perihelion) – 5.56 au
detectability of NG effects in the comet's motion comet with determinable NG~orbit
type of model of motion GR - gravitational orbit
data weighting YES
number of residuals 480
RMS [arcseconds] 0.35
orbit quality class 1a+
orbital elements (barycentric ecliptic J2000)
Epoch 2324 11 14
perihelion date 2020 07 20.00020552 ± 0.00056227
perihelion distance [au] 4.98886833 ± 0.00000341
eccentricity 1.00035154 ± 0.00000429
argument of perihelion [°] 56.068751 ± 0.000069
ascending node [°] 42.500177 ± 0.000021
inclination [°] 155.689968 ± 0.00001
reciprocal semi-major axis [10-6 au-1] -70.46 ± 0.86
file containing 5001 VCs swarm
2019q1ba.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.