Lunar occultation timings off?

[JanHatt]

Expected Behaviour

Timing of ingress & egress of occultations of stars and planets should be accurate within a few seconds.

Actual Behaviour

Recent occultation ingress timings of Saturn, Mars and stars were off beween ~40-60 seconds compared to actual observations, even after checking that the observing location was correct and clock used for timing NTP synchronized.

More specifically, ingress time of 8.1 mag star on 2025/01/11 was predicted for 20:43:04 UTC, 41s earlier than actual observation.
Start and end of Mars ingress on 20250114 was predicted 04:10:37 and 04:11:13 UTC, 51 seconds/ 57 seconds earlier than observation.

Observation was at 28°46'18.59" N 17°57'33,96", 1000 asl.

Steps to reproduce

System

• Stellarium version: 0.21.1
• Operating system: Linux Mint 20 Cinnamon
• Graphics Card: Intel 2nd Generation Core Processor Family Integrated Graphics
• Screen type

Logfile

If possible, attach the logfile log.txt from your user data directory. Look into the Guide for its location.

[Atque]

Please update to 24.4 and check the results. Stellarium was less accurate in 2021.

[gzotti]

0.21 is indeed too old to discuss here. Dropping the zero had a reason :-) However, another problem is the geometry of the lunar sphere as tessellated "disco ball", which means the edge may be inside the actual diameter. See the according attempted PR #1959.

[github-actions]

This report is outdated, such, the problematic code replaced by new tool or feature...