Solar System
Dynamics &
Planetology
Group 		C/2000 SV74 LINEAR



General description

Comet C/2000 SV74 was discovered on 24 September 2009 by LINEAR as an apparently asteroidal object; CCD images taken by Milos Tichy (Klet Observatory) on 19 October 2000 revealed a cometary appearance [[IAUC 7510, 2000 October 19]. Later, five images of this object were found on LINEAR exposures taken on 5 September 2000. Comet passed perihelion at the end of April 2002 (see below).

C/2000 SV74 was observed 4.7 yr in a range of heliocentric distances: 6.26 au – 3.542 au (perihelion) – 9.51 au.

Comet had its closest approach to Earth on 3 November 2001 (3.195 au, six months before perihelion).

Solution given below is based on observations available before 2012, later several new positional data are included at the IAU Minor Planet Center. Non-gravitational solution based on the complete data set (August 2016) is available here.





SSDP Cometary Note C2000SVN2-001 – older solution

Comet C/2000 SV74 LINEAR

number of observations 2189
number of residuals 4349
data interval 2000 Sep. 5 — 2005 May 12
rms [arcsec] 0.71
orbit quality class 1a+

Osculating orbital elements (heliocentric; ecliptic J2000.0)

Epoch (TT) 20020506.0 = JD 2452400.5
time of perihelion passage (TT) 20020430.474295 ± 0.000097
perihelion distance 3.54159163 ± 0.00000176
eccentricity 1.00479822 ± 0.00000219
argument of perihelion [deg] 76.226350 ± 0.000016
longitude of the ascending node [deg] 24.185277 ± 0.000005
inclination [deg] 75.237116 ± 0.000009
inverse semimajor axis [10-6 au-1] -1354.82 ± 0.62

Nongravitational parameters [10-8 au/day2] A1 = 6121.6 ± 80.2 A2 = 717.9 ± 60.7 A3 = -513.6 ± 21.7

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) 16980827
time of perihelion passage (TT) 20020430.081681 ± 0.000341
perihelion distance 3.52665831 ± 0.00000232
eccentricity 0.99967447 ± 0.00000301
argument of perihelion [deg] 76.492877 ± 0.000070
longitude of the ascending node [deg] 24.152963 ± 0.000010
inclination [deg] 75.360907 ± 0.000012
inverse semimajor axis [10-6 au-1] 92.31 ± 0.85

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) 23040413
time of perihelion passage (TT) 20020429.659239 ± 0.000299
perihelion distance 3.53676676 ± 0.00000223
eccentricity 1.00019411 ± 0.00000212
argument of perihelion [deg] 76.072949 ± 0.000063
longitude of the ascending node [deg] 24.187913 ± 0.000010
inclination [deg] 75.352526 ± 0.000009
inverse semimajor axis [10-6 au-1] -54.88 ± 0.60


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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