Observation by rroberto: Between the night of December 28 and 29,...

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BAA Comet Section

Observer

rroberto

Observed

2024 Dec 28 - 00:00

Uploaded

2025 Jan 05 - 13:39

Objects

P/2023 S1

Full filename

2023s1/2023s1_20241228_rroberto.jpg

Target name

P/2023 S1

Title

Between the night of December 28 and 29, 2024, I also observed the new periodic comet P/2023 S1.The comet is very interesting. First of all, in 2021 it passed at only 0.01AU from Jupiter, drastically modifying the orbital elements and especially the q (before it was at almost 5 now at about 2.6) with a period of 7.5 years instead of almost 30. Furthermore, its absolute magnitude seems to be that of a good short-period periodic comet and also quite active. Photo data (with clear filter): December 29, 2024 00h38m UT and 40x90s. North at the top (slightly shifted to the left by about 4°) and east to the left. Image scale 1".24/pixel and field of 21'.6x32'.3. Coma mag. 15.7, diameter 34" and tail of 2'.9 in PA 298°.

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2023s1_20241228_rroberto.jpg (1.1 MB)

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