Solar System
Dynamics &
Planetology
Group 		C/2007 O1 LINEAR



General description

data set of C/2007 O1
Comet C/2007 O1 was observed in the range of heliocentric distance: 4.99 au – 2.88 au (perihelion) – 2.91 au, however in the data sequence, we have more than one-year gap in positional measurements. This is due to the fact that the object was initially discovered as an asteroid, and more than a year later it was rediscovered as a comet. Non-gravitational accelerations are completely not detectable in its motion during the period covered by positional observations.

More details in Królikowska and Dybczyński, 2013.

Figure caption: Time distribution of positional observations with corresponding heliocentric (red curve) and geocentric (green curve) distance at which they were taken. The horizontal dotted line shows the perihelion distance for a given comet whereas vertical dotted line — the moment of perihelion passage.

SSDP Cometary Note C2007O1A5-001

Comet C/2007 O1 LINEAR

number of observations 183
number of residuals 336
data interval 2006 Apr. 2 — 2007 Nov. 13
rms [arcsec] 0.47
orbit quality class 1a

Osculating orbital elements (heliocentric; ecliptic J2000.0)

Epoch (TT) 20070520.0 = JD 2454240.5
time of perihelion passage (TT) 20070603.298842 ± 0.001027
perihelion distance 2.87671670 ± 0.00000778
eccentricity 1.00498807 ± 0.00001343
argument of perihelion[deg] 159.400786 ± 0.000267
longitude of the ascending node [deg] 116.235193 ± 0.000027
inclination[deg] 24.379508 ± 0.000055
inverse semimajor axis [10-6 au-1] -1733.95 ± 4.66

Note: Epoch is given in a format: yyyymmdd.d, time of perihelion passage in a format of yyyymmdd.dddddd.
data set of C/2007 O1

Figure caption: Six 2D-projections of the 6D space of original swarm (5001 VCs) of C/2007 O1. Each density map is given in logarithmic scale presented on the right in the individual panel.
The same figure in the new window

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

Epoch (TT) 17051010.0
time of perihelion passage (TT) 20070604.665713 ± 0.001066
perihelion distance 2.86341260 ± 0.00000781
eccentricity 0.99993311 ± 0.00001347
argument of perihelion[deg] 159.569308 ± 0.000270
longitude of the ascending node [deg] 116.490041 ± 0.000029
inclination[deg] 24.427700 ± 0.000055
inverse semimajor axis [10-6 au-1] 23.36 ± 4.70

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 150 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) 23030529.0
time of perihelion passage (TT) 20070602.892064 ± 0.000995
perihelion distance 2.86863333 ± 0.00000764
eccentricity 1.00142522 ± 0.00001346
argument of perihelion[deg] 159.219601 ± 0.000266
longitude of the ascending node [deg] 116.234733 ± 0.000026
inclination[deg] 24.398264 ± 0.000055
inverse semimajor axis [10-6 au-1] -496.83 ± 4.69


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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