Solar System
Dynamics &
Planetology
Group 		C/2006 VZ13 LINEAR


General description

data set of C/2006vz13
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 lines show the perihelion distance for a given comet whereas vertical dotted lines — the moment of perihelion passage. The observations not taken for the non-gravitational orbit determination given in SSDP Cometary Note C2006VZP2-001 (below in this page) are shown by black open circles.
Observations have stopped soon after perihelion passage at the distance of 1.02 au from the Sun.

Here, two osculating orbits are given: We recommend this second solution (of 2a quality class) for backward dynamical studies (i.e. origin of C/2006 VZ13), and a non-gravitational orbit based on all data for forward extrapolation of motion (1b class) with the remark that the future motion of this comet is additionally uncertain due to the lack of post-perihelion data.
More details in Królikowska and Dybczyński, 2013.




SSDP Cometary Note C2006VZN5-001

Comet C/2006 VZ13 LINEAR (non-gravitational solution)

number of observations 1173
number of residuals 2227
data interval 2006 Nov. 13 — 2007 Aug. 14
rms [arcsec] 0.51
orbit quality class 1b

Osculating orbital elements (heliocentric; ecliptic J2000.0)

Epoch (TT) 20070808.0 = JD 2454320.5
time of perihelion passage (TT) 20070810.892820 ± 0.000175
perihelion distance 1.01524745 ± 0.00000091
eccentricity 0.99994377 ± 0.00001270
argument of perihelion[deg] 174.117028 ± 0.000257
longitude of the ascending node [deg] 66.029510 ± 0.000123
inclination[deg] 134.792098 ± 0.000065
inverse semimajor axis [10-6 au-1] 55.39 ± 12.51

Nongravitational parameters [10-8 au/day2] A1 = 4.576 ± 0.115 A2 = -3.041 ± 0.135 A3 = 1.220 ± 0.074

Notes: 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) 17090810.0
time of perihelion passage (TT) 20070811.243902 ± 0.000194
perihelion distance 1.01301129 ± 0.00000078
eccentricity 1.00001871 ± 0.00000392
argument of perihelion[deg] 174.163643 ± 0.000117
longitude of the ascending node [deg] 65.978921 ± 0.000024
inclination[deg] 134.779717 ± 0.000011
inverse semimajor axis [10-6 au-1] -18.47 ± 3.87

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) 23110706.0
time of perihelion passage (TT) 20070810.617405 ± 0.000466
perihelion distance 1.01220890 ± 0.00000512
eccentricity 0.99950280 ± 0.00002034
argument of perihelion[deg] 174.033429 ± 0.000461
longitude of the ascending node [deg] 66.080220 ± 0.000024
inclination[deg] 134.788660 ± 0.000155
inverse semimajor axis [10-6 au-1] 491.21 ± 20.10


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.



SSDP Cometary Note C2006VZP2-001

Comet C/2006 VZ13 LINEAR (non-gravitational solution based on pre-perihelion observations taken before July 1)

number of observations 419
number of residuals 823
data interval 2006 Nov. 13 — 2007 June 30
rms [arcsec] 0.39
orbit quality class 2a

Osculating orbital elements (heliocentric; ecliptic J2000.0)

Epoch (TT) 20070808.0 = JD 2454320.5
time of perihelion passage (TT) 20070810.891488 ± 0.000334
perihelion distance 1.01525293 ± 0.00000258
eccentricity 1.00015482 ± 0.00005613
argument of perihelion[deg] 174.115421 ± 0.000746
longitude of the ascending node [deg] 66.028203 ± 0.000817
inclination[deg] 134.792653 ± 0.000454
inverse semimajor axis [10-6 au-1] -152.49 ± 55.29

Nongravitational parameters [10-8 au/day2] A1 = 1.874 ± 0.804 A2 = -0.866 ± 0.483 A3 = 0.528 ± 0.404

Note: Epoch is given in a format: yyyymmdd.d, time of perihelion passage in a format of yyyymmdd.dddddd.
Most recommended model for studying the origin of this comet.

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

Epoch (TT) 17090412.0
time of perihelion passage (TT) 20070811.247241 ± 0.000688
perihelion distance 1.01301057 ± 0.00000132
eccentricity 0.99998585 ± 0.00000486
argument of perihelion[deg] 174.164610 ± 0.000185
longitude of the ascending node [deg] 65.978852 ± 0.000093
inclination[deg] 134.779701 ± 0.000042
inverse semimajor axis [10-6 au-1] 13.96 ± 4.80

Note: Values of uncertainties of original orbital elements were derived using a swarm of 5001 osculating orbits of VCs (including the nominal osculating orbit given above) for original 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.





Solar System Dynamics & Planetology Group, 2013. All rights reserved

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