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HI
I just downloaded version 1.4.3: everything works perfectly.
The improvements of the program are very interesting.
Thanks for this great programming work.
Regards
Merci 🙂
Ciao Alberto, da un primo esame della nuova versione 1.4.3 sembra tutto a posto.
Grazie e complimenti per il tuo programma.
Luigi
Grazie Luigi.
Tra i profili orizzonte da scaricare ci sono anche quelli di Tortona e dell’Osservatorio di Casasco. 🙂
Hi
An interesting article (author Giulio Magli) regarding the April 1, 2471 b.C. eclipse and the end of 4th Egyptian dynasty : https://arxiv.org/pdf/2412.13640
Regards
Thanks Jean-Claude.
The 2471 BCE eclipse is actually an important reference, giving more reliability to the DeltaT estimation over 2500 BCE period. There is a small inaccuracy in the text: the totality, even at Greatest Eclipse, didn’t last 7 minutes, as said by Magli, but 5m 23s (F.Espenak), 5m 22s (A.Cavalli), 5m 29s (IMCCE). It’s a pre-print though, hopefully this could be corrected in the final version.
HI
A new article on arXiv about the solar eclipse of 2471 BCE :
https://arxiv.org/pdf/2412.20407
Happy New Year
Regards
Hi
Since January 1, 2025, the IMCCE has changed its name!
Published on Monday 27 January 2025
The IMCCE has merged with another laboratory at the Paris Observatory, the SyRTE (Time-Space Reference System), to form the Time-Space Laboratory (LTE). Therefore, the LTE is a multidisciplinary laboratory: the traditional activities of ephemerides and celestial mechanics of the IMCCE are now complemented by SyRTE’s work on Earth’s rotation, atomic clocks, and the history of astronomical sciences. This will be an opportunity for us to introduce you to many new topics!
While all the infrastructures of the new laboratory are being set up, you can now find news on all these topics on the LTE website: https://lte.observatoiredeparis.psl.eu/
And to stay updated with all our activities, you can subscribe to the LTE newsletter.
Regards
Hi Jean-Claude,
thanks for this info.
I have always followed with interest the activities of the BdL which later became IMCCE. They are the history of Celestial Mechanics. Let’s see what will be born from this union.
AC