Solar System
Dynamics &
Planetology
Group 		C/1989 Q1 Okazaki–Levy–Rudenko


SSDP Cometary Note C1989Q1N1-001

Comet C/1989 Q1 Okazaki–Levy–Rudenko

number of observations 231
number of residuals 452
data interval 1989 Aug. 24 — 1989 Dec. 24
rms [arcsec] 1.30
orbit quality class 2a

Osculating orbital elements (heliocentric; ecliptic J2000.0)

Epoch (TT) 19891110.0 = JD 2447840.5
time of perihelion passage (TT) 19891111.914664 ± 0.000138
perihelion distance 0.64236124 ± 0.00000070
eccentricity 1.00002499 ± 0.00001665
argument of perihelion [deg] 150.564098 ± 0.000214
longitude of the ascending node [deg] 275.510766 ± 0.000275
inclination [deg] 90.146682 ± 0.000248
inverse semimajor axis [10-6 au-1] -38.91 ± 25.92

Nongravitational parameters [10-8 au/day2] A1 = 3.396 ± 0.317 A2 = 0.506 ± 0.149 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) 16911112
time of perihelion passage (TT) 19891110.997724 ± 0.000392
perihelion distance 0.64067579 ± 0.00000348
eccentricity 0.99997251 ± 0.00001425
argument of perihelion [deg] 150.615177 ± 0.000450
longitude of the ascending node [deg] 275.483828 ± 0.000276
inclination [deg] 89.973369 ± 0.000251
inverse semimajor axis [10-6 au-1] 42.90 ± 22.24

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) 22880416
time of perihelion passage (TT) 19891112.554398 ± 0.000172
perihelion distance 0.64134349 ± 0.00000894
eccentricity 0.99994838 ± 0.00001752
argument of perihelion [deg] 150.503378 ± 0.001486
longitude of the ascending node [deg] 275.566949 ± 0.000276
inclination [deg] 90.139972 ± 0.000246
inverse semimajor axis [10-6 au-1] 80.49 ± 27.32


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

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