Solar System
Dynamics &
Planetology
Group 		C/1974 F1 Lovas


SSDP Cometary Note C1974F1N2-001

Comet C/1974 F1 Lovas

number of observations 137
number of residuals 273
data interval 1974 Mar. 21 — 1977 Sep. 11
rms [arcsec] 1.08
orbit quality class 1a

Osculating orbital elements (heliocentric; ecliptic J2000.0)

Epoch (TT) 19750816.0 = JD 2442640.5
time of perihelion passage (TT) 19750822.181059 ± 0.000455
perihelion distance 3.01143760 ± 0.00001130
eccentricity 0.99958340 ± 0.00001388
argument of perihelion [deg] 261.366389 ± 0.000102
longitude of the ascending node [deg] 12.368600 ± 0.000046
inclination [deg] 50.648531 ± 0.000058
inverse semimajor axis [10-6 au-1] 138.34 ± 4.61

Nongravitational parameters [10-8 au/day2] A1 = 50.9 ± 38.0 A2 = -1.0 ± 30.8 A3 = -14.29 ± 6.73

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) 16730619
time of perihelion passage (TT) 19750821.673310 ± 0.001378
perihelion distance 3.01230367 ± 0.00001431
eccentricity 0.99987782 ± 0.00001505
argument of perihelion [deg] 261.346466 ± 0.000421
longitude of the ascending node [deg] 12.362194 ± 0.000047
inclination [deg] 50.610951 ± 0.000064
inverse semimajor axis [10-6 au-1] 40.56 ± 5.00

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) 22830801
time of perihelion passage (TT) 19750822.264925 ± 0.002042
perihelion distance 3.01047419 ± 0.00001490
eccentricity 0.99842815 ± 0.00002048
argument of perihelion [deg] 261.338643 ± 0.000526
longitude of the ascending node [deg] 12.320071 ± 0.000091
inclination [deg] 50.625063 ± 0.000059
inverse semimajor axis [10-6 au-1] 522.13 ± 6.81


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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