Solar System
Dynamics &
Planetology
Group 		C/1885 X1 Fabry


SSDP Cometary Note C1885X1N1-001

Comet C/1885 X1 Fabry

number of observations 228
number of residuals 390
data interval 1885 Dec. 1 — 1886 July 19
rms [arcsec] 3.58
orbit quality class 2a

Osculating orbital elements (heliocentric; ecliptic J2000.0)

Epoch (TT) 18860404.0 = JD 2410000.5
time of perihelion passage (TT) 18860406.454383 ± 0.000284
perihelion distance 0.64236680 ± 0.00000206
eccentricity 1.00027315 ± 0.00002319
argument of perihelion [deg] 126.588371 ± 0.000120
longitude of the ascending node [deg] 37.963059 ± 0.000094
inclination [deg] 82.628566 ± 0.000459
inverse semimajor axis [10-6 au-1] -425.22 ± 36.10

Nongravitational parameters [10-8 au/day2] A1 = 2.337 ± 0.295 A2 = -0.288 ± 0.161 A3 = 0.0 (assumed)

Note: Epoch is given in a format: yyyymmdd.d, time of perihelion passage in a format of yyyymmdd.dddddd.

Original orbital elements (barycentric; at 250 au from the Sun)

Epoch (TT) 15880117
time of perihelion passage (TT) 18860405.846922 ± 0.000595
perihelion distance 0.63999379 ± 0.00000574
eccentricity 0.99996093 ± 0.00001099
argument of perihelion [deg] 126.676913 ± 0.000644
longitude of the ascending node [deg] 37.853210 ± 0.000093
inclination [deg] 82.756505 ± 0.000459
inverse semimajor axis [10-6 au-1] 61.04 ± 17.17

Note: Values of uncertainties of original/future orbital elements were derived using a swarm of 5001 osculating orbits of VCs (including the nominal osculating orbit given above) for original/future orbital evolution calclulations and then by fitting the distribution of a given orbital element of original/future swarm of VCs to Gaussian distribution.

Original barycentric positions and velocities of 5001 VCs at 250 au from the Sun are given here   (data format), i.e. before entering the planetary zone.

Future orbital elements (barycentric; at 250 au from the Sun)

Epoch (TT) 21820810
time of perihelion passage (TT) 18860407.057135 ± 0.000133
perihelion distance 0.64058887 ± 0.00000783
eccentricity 1.00006625 ± 0.00002647
argument of perihelion [deg] 126.518354 ± 0.001336
longitude of the ascending node [deg] 38.136646 ± 0.000094
inclination [deg] 82.607618 ± 0.000459
inverse semimajor axis [10-6 au-1] -103.42 ± 41.32


Future barycentric positions and velocities of 5001 VCs at 250 au from the Sun are given here   (data format), i.e. after leaving the planetary zone.





Solar System Dynamics & Planetology Group, 2013. All rights reserved

\