C/2019 Q3 PanSTARRS
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Comet C/2019 Q3 was discovered on 29 August 2019, about 10.5 months after its perihelion passage; later a series of prediscovery images was found going back to 3 July 2019. This comet was observed only to 6 September 2019.

Thus, the solution given here is based on post-perihelion data and span over 0.178 yr in a range of heliocentric distances from 7.53 au to 7.65 au.

This comet seems to be Oort spike comet with a bit tight future orbit than original orbit; however original and future semimajor axis is poorly known (see uncertainties of barycentric orbits).
solution description
number of observations 86
data interval 2019 07 03 – 2019 09 06
data type observed only after perihelion (POST)
data arc selection entire data set (STD)
range of heliocentric distances 7.53 au – 7.65au
detectability of NG effects in the comet's motion NG effects not determinable
type of model of motion GR - gravitational orbit
data weighting YES
number of residuals 165
RMS [arcseconds] 0.18
orbit quality class 1a+
orbital elements (barycentric ecliptic J2000)
Epoch 1709 09 19
perihelion date 2018 08 21.64564546 ± 0.42054387
perihelion distance [au] 7.24396428 ± 0.00155308
eccentricity 1.00004672 ± 0.00012978
argument of perihelion [°] 152.667485 ± 0.035093
ascending node [°] 151.367092 ± 0.000352
inclination [°] 65.573973 ± 0.009872
reciprocal semi-major axis [10-6 au-1] -6.45 ± 17.92
file containing 5001 VCs swarm
2019q3ra.bmi