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
next orbit elements (barycentric ecliptic J2000)
no. of returning VCs in the swarm 5001 *
no. of escaping VCs in the swarm 0
no. of hyperbolas among escaping VCs in the swarm 0
next recip semi-major axis [10-6 au-1] 427.51 ± 25.02
next perihelion distance [au] 0.1925 – 0.1927 – 0.1928
next aphelion distance [103 au] 4.4 – 4.7 – 5.1
time interval to next perihelion [Myr] 0.101 – 0.113 – 0.127
percentage of VCs with q < 10100
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.