Solar System
Dynamics &
Planetology
Group 		C/1892 Q1 Brooks


SSDP Cometary Note C1892Q1N1-001

Comet C/1892 Q1 Brooks

number of observations 191
number of residuals 334
data interval 1892 Sep. 1 — 1893 July 13
rms [arcsec] 2.80
orbit quality class 2a

Osculating orbital elements (heliocentric; ecliptic J2000.0)

Epoch (TT) 18930117.0 = JD 2412480.5
time of perihelion passage (TT) 18921228.586707 ± 0.000228
perihelion distance 0.97595829 ± 0.00000584
eccentricity 1.00030422 ± 0.00002555
argument of perihelion [deg] 252.651332 ± 0.000427
longitude of the ascending node [deg] 266.034217 ± 0.000181
inclination [deg] 24.800982 ± 0.000152
inverse semimajor axis [10-6 au-1] -311.72 ± 26.18

Nongravitational parameters [10-8 au/day2] A1 = 2.779 ± 0.405 A2 = 0.199 ± 0.385 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) 15940415
time of perihelion passage (TT) 18921228.151231 ± 0.001357
perihelion distance 0.97466329 ± 0.00001784
eccentricity 0.99994340 ± 0.00004960
argument of perihelion [deg] 252.541362 ± 0.001495
longitude of the ascending node [deg] 266.215494 ± 0.000171
inclination [deg] 24.770458 ± 0.000148
inverse semimajor axis [10-6 au-1] 58.07 ± 50.89

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) 21851013
time of perihelion passage (TT) 18921228.159564 ± 0.001086
perihelion distance 0.97762751 ± 0.00000825
eccentricity 1.00047597 ± 0.00002276
argument of perihelion [deg] 252.717846 ± 0.000772
longitude of the ascending node [deg] 265.987063 ± 0.000186
inclination [deg] 24.766253 ± 0.000149
inverse semimajor axis [10-6 au-1] -486.86 ± 23.28


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

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