Solar System
Dynamics &
Planetology
Group 		C/2006 OF2 Broughton


SSDP Cometary Note C2006OFN5-001

Comet C/2006 OF2 Broughton

number of observations 4917
number of residuals 9659
data interval 2006 June 23 — 2010 May 11
rms [arcsec] 0.36
orbit quality class 1a+

Osculating orbital elements (heliocentric; ecliptic J2000.0)

Epoch (TT) 20080911.0 = JD 2454720.5
time of perihelion passage (TT) 20080915.684505 ± 0.000024
perihelion distance 2.43143593 ± 0.00000043
eccentricity 1.00083257 ± 0.00000075
argument of perihelion[deg] 95.612164 ± 0.000008
longitude of the ascending node [deg] 318.508002 ± 0.000004
inclination[deg] 30.170411 ± 0.000003
inverse semimajor axis [10-6 au-1] -342.42 ± 0.31

Nongravitational parameters [10-8 au/day2] A1 = 2.379 ± 0.168 A2 = -1.373 ± 0.131 A3 = -0.0054 ± 0.0347

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) 17070930.0
time of perihelion passage (TT) 20080914.944190 ± 0.000090
perihelion distance 2.42852246 ± 0.00000064
eccentricity 0.99994849 ± 0.00000119
argument of perihelion[deg] 95.624276 ± 0.000031
longitude of the ascending node [deg] 318.584757 ± 0.000009
inclination[deg] 30.144295 ± 0.000003
inverse semimajor axis [10-6 au-1] 21.21 ± 0.49

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) 23020315.0
time of perihelion passage (TT) 20080915.318008 ± 0.000090
perihelion distance 2.43768516 ± 0.00000055
eccentricity 1.00160599 ± 0.00000055
argument of perihelion[deg] 95.754006 ± 0.000024
longitude of the ascending node [deg] 318.447571 ± 0.000008
inclination[deg] 30.112628 ± 0.000003
inverse semimajor axis [10-6 au-1] -658.82 ± 0.23


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.





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