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
orbital elements (barycentric ecliptic J2000)
Epoch 1596 08 02
perihelion date 1895 12 18.20659536 ± 0.00125985
perihelion distance [au] 0.18953846 ± 0.00001552
eccentricity 0.99995527 ± 0.00003756
argument of perihelion [°] 272.522732 ± 0.003510
ascending node [°] 321.663696 ± 0.001260
inclination [°] 141.700393 ± 0.000382
recip semi-major axis [10-6 au-1] 235.99 ± 198.20
file containing 5001 VCs swarm
1895w1n1.bmi
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
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.