C/1895 W1 Perrine
more info
C/1895 W1 was discovered on 17 November 1895 by Charles Dillon Perrine (Lick Observatory, California, USA), that is about a month before its perihelion passage, and it was last seen on 10 August 1896 [Kronk, Cometography: Volume 2].
This comet made its closest approach to the Earth on 14 December 1895 (0.794 au), that is 4 days before perihelion passage.
Solutions given here are based on data spanning over 0.726 yr in a range of heliocentric distances from 0.92 au through perihelion (0.192 au) to 4.01 au.
This comet suffers small planetary perturbations during its passage through the planetary system; these perturbations lead to a more tight future orbit with a semimajor axis of about 2,300 au (see future barycentric orbits).
See also Królikowska 2020.

solution description
number of observations 103
data interval 1895 11 18 – 1896 08 10
data type perihelion within the observation arc (FULL)
data arc selection entire data set (STD)
range of heliocentric distances 0.92 au – 0.19 au (perihelion) – 4.01 au
type of model of motion NS - non-gravitational orbits for standard g(r)
data weighting YES
number of residuals 156
RMS [arcseconds] 2.42
orbit quality class 2a
previous orbit elements (barycentric ecliptic J2000)
no. of returning VCs in the swarm 4341 *
no. of escaping VCs in the swarm 660
no. of hyperbolas among escaping VCs in the swarm 577
previous recip semi-major axis [10-6 au-1] 236.29 ± 199.92
previous perihelion distance [au] 0.19 – 0.192 – 1.597 R
previous aphelion distance [103 au] 4 – 7.5 – 24.4 R
time interval to previous perihelion [Myr] 0.088 – 0.228 – 1.352 R
percentage of VCs with q < 1096
percentage of VCs with 10 < q < 201
percentage of VCs with q > 203
dynamical status uncertain (DU )
Time distribution of positional observations with corresponding heliocentric (red curve) and geocentric (green curve) distance at which they were taken. The horizontal dotted line shows the perihelion distance for a given comet whereas vertical dotted line – the moment of perihelion passage