Comet Tsuchinshan-ATLAS - nucleus rotation estimation.
Taken by Maximilian-Vlad Teodorescu on October 17, 2024 @
Institute of Space Science, Magurele, Romania
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Comet Tsuchinshan-ATLAS - nucleus rotation estimation.
After last night's session, and looking at the results, I did an estimation of the rotation of the nucleus rotation from my own images. The procedure was pretty much straightforward, with placing lines on two images and just fitting (by hand) the possible variations in one of the jets (which is quite obvious in the animation provided). The results represents the minimum (I did try to reduce the errors as much as possible) possible rotation period deduced from just one jet variation. Now the tricky part is that the actual jet might just have its own variation due to a number of effects, not only the rotations of the nucleus, so this might be completely wrong, but at least I know for sure that the rotation period cannot be shorter than the deduced period.
So my result is 6 hours (+/- 1 hour due to errors).
The sequences were acquired using: 355mm Newtonian F/4.5, ASI183MM. Exposures of 0.5sec. Two images were chosen, each a stack of 240 frames (3 minutes of data), with the center UT value noted.
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