C/2017 B3 LINEAR
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Comet C/2017 B3 was discovered on 26 January 2017 with LINEAR survey, that is about two years before its perihelion passage. Some prediscovery images of this comet were found: taken on 1 and 10 of April 2016 by Pan-STARRS 1 telescope (Haleakala). In 2020, this comet is still observed.
Comet had its closest approach to the Earth on 19 August 2019 (3.480 au), about a 6.5 months after its perihelion passage.
Solution given here is based on pre-perihelion data spanning over 2.14 yr in a range of heliocentric distances from 8.98 au to 4.49 au (23 May 2018).
This comet suffers small planetary perturbations during its passage through the planetary system; its original semimajor axis is shorter than 5,000 au (see future barycentric orbit).

solution description
number of observations 277
data interval 2016 04 01 – 2018 05 23
data type observed only before perihelion (PRE)
data arc selection entire data set (STD)
range of heliocentric distances 8.98 au – 4.49au
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 532
RMS [arcseconds] 0.28
orbit quality class 1a+
orbital elements (barycentric ecliptic J2000)
Epoch 2327 12 09
perihelion date 2019 02 03.10856939 ± 0.00053069
perihelion distance [au] 3.90833454 ± 0.00000716
eccentricity 0.99815656 ± 0.00000333
argument of perihelion [°] 284.550491 ± 0.000134
ascending node [°] 2.230881 ± 0.000011
inclination [°] 54.235746 ± 0.000015
reciprocal semi-major axis [10-6 au-1] 471.67 ± 0.85
file containing 5001 VCs swarm
2017b3a5.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.