The C3 non-group comet of 2000 Nov 10/11 and C/2001-T5
I have found this comet in archival C3 images of 2000 November 10/11 on 2005 April 14. It moved close to the projected path of C/2001 T5:
Shown are the C2 field of view and the orbit of C/2001 T5 as it would appear in C3 2000 Nov 11.0 UTC.
White crosses indicate the positions of the new comet at 20:18 and 00:42 UTC and the perihelion position of C/2001 T5.
The numbers give the velocity of 2001 T5 in pixel/hour for C3. The new comet moved with 12.6 pixel/hour between 20:18 and 00:42 UTC.
The new comet seems to follow the path of C/2001 T5 very well.
I have added a third position (for 04:30 UTC) measured by Karl Battams.
Orbital computations by Brian Marsden (2005 April 15) showed very similar orbital elements for the two comets:
|C/2000 V4||2000 Nov 11.46||0.0503||180.01||324.91||54.97||144.9||0.0|
|C/2001 T5||2001 Oct 15.77||0.0476||179.51||327.74||55.26||147.5||0.4|
Brian Marsden wrote (MPEC 2005-G93):
C/2000 V4 appears to be related to C/2001 T5 (MPEC 2001-V10). This was pointed out by R. Kracht prior to the derivation of the above positions and the orbit computation.