C/2019 F1 ATLAS-Africano
more info
Comet C/2019 F1 was discovered on 28/29 March 2019, more than 2 yr before its perihelion passage. Later a series of pre-discovery observations were found going backto 8 February 2019. In the moment of orbit determination, this comet was still observed.

Solutions (GR and NG) given here span over 4.01 yr in a range of heliocentric distances: 7.96 au – 3.60 au (perihelion) – 6.24 au; also orbit based on pre-perihelion data and post-perihelion data are presented.

This Oort spike comet suffers small planetary perturbations during its passage through the planetary system that lead to a more tight future orbit (see future barycentric orbit).
solution description
number of observations 1354
data interval 2019 02 08 – 2021 06 18
data arc selection data generally limited to pre-perihelion (PRE)
range of heliocentric distances 7.96 au – 3.6au
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 2670
RMS [arcseconds] 0.30
orbit quality class 1a+
orbital elements (barycentric ecliptic J2000)
Epoch 1718 04 05
perihelion date 2021 06 23.30454714 ± 0.00030690
perihelion distance [au] 3.58718915 ± 0.00000230
eccentricity 0.99984988 ± 0.00000181
argument of perihelion [°] 251.318627 ± 0.000061
ascending node [°] 38.658455 ± 0.000003
inclination [°] 54.226399 ± 0.000008
reciprocal semi-major axis [10-6 au-1] 41.85 ± 0.51
file containing 5001 VCs swarm
2019f1pa.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.