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JanHatt opened this issue
Apr 27, 2024
· 3 comments
Labels
bugSomething likely wrong in the codeimportance: mediumA bit annoying, minor miscalculation, but no crashstate: confirmedA developer can reproduce the issue
Shadow events are indeed accurate when compared to IMCCE prdictions, eclipses are not. E.g., for the Titan eclipse of 27.10.2024, IMCCE (with JPL ephemeris) predicts 20:51 UT Eclipse disappear (start) and 21:44 UT Eclipse reappear (start). Stellarium's simulation is way off.
However, IMCCE predicts a shadow transit of Titan on Saturn for the 20.11.2024 between 19:38 and 22:11 UT, which fits perfectly to Stellarium.
Same with all other eclipses/shadow transits by Titan in 2024/25. Did not check other moons.
Steps to reproduce
System
Stellarium version: 21.1 & 23.4
Operating system: Linux Mint 20
regards,
Jan
The text was updated successfully, but these errors were encountered:
Uh! Switching off light time correction reproduces the shadow ingress.
IIRC, we don't specifically tweak anything for shadows, they should just happen when the positional computation is correct. Now, we need positional comparison options.
bugSomething likely wrong in the codeimportance: mediumA bit annoying, minor miscalculation, but no crashstate: confirmedA developer can reproduce the issue
Hi, have I found a bug?
Expected Behaviour
Start and end of Titan phenomena should be in line with prediction e.g. by the IMCCE https://ssp.imcce.fr/forms/satellites-events
Actual Behaviour
Shadow events are indeed accurate when compared to IMCCE prdictions, eclipses are not. E.g., for the Titan eclipse of 27.10.2024, IMCCE (with JPL ephemeris) predicts 20:51 UT Eclipse disappear (start) and 21:44 UT Eclipse reappear (start). Stellarium's simulation is way off.
However, IMCCE predicts a shadow transit of Titan on Saturn for the 20.11.2024 between 19:38 and 22:11 UT, which fits perfectly to Stellarium.
Same with all other eclipses/shadow transits by Titan in 2024/25. Did not check other moons.
Steps to reproduce
System
regards,
Jan
The text was updated successfully, but these errors were encountered: