3 replies to this topic

[Diff]

Hi, I have just registered here.

It seems there is no list of the Saturnian moon events, only simulators or webpage where you need to search for events day by day. I have generated one (find zipped archive) from JPL ephemerides using Astropy Python package. 

The results have been validated by comparison with https://doncarona.ta...du/apps/saturn/ page for several events; the agreement is within 4 minutes and mostly within 2 minutes. The only exception is Iapetus (for Iapetus it can be as large as 40 minutes).

 

The list is in ascii files with a simple format, for example, the intervals of Titan's transits, shadow transits, and eclipses/occultations are given as:

Tra: 2024-05-13T11:25:49Z 2024-05-13T12:54:49Z  96

...

Sha: 2024-11-20T19:58:29Z 2024-11-20T22:31:29Z  92
...

EOc: Occ 2024-05-21T10:05:37Z Occ 2024-05-21T13:22:37Z  82

 

It is GMT/UTC time. So conversion to your local timezone is needed. 

 

The format is explained in readme.txt.

Hope someone finds it helpful.

Attached Files

•  Saturn_Jupiter_moon_events.zip   266.9KB   17 downloads

Edited by Diff, 14 August 2024 - 03:52 AM.

[alvarete]

Hi Diff!,

Wellcome to Cloudy Nights forums anda many thanks for your info!

[Diff]

Hi Diff!,

Wellcome to Cloudy Nights forums anda many thanks for your info!

Thanks! Glad to be here. Unfortunately, I can observe only rarely, but at least I can read other's reports   and play with astropy. 

[Diff]

The results have been validated by comparison with https://doncarona.ta...du/apps/saturn/ page for several events; the agreement is within 4 minutes and mostly within 2 minutes. The only exception is Iapetus (for Iapetus it can be as large as 40 minutes).

Puzzled by huge disagreement with doncarona results for Iapetus, I checked WinJUPOS predictions, and found them close to my results, within 4 minutes. It seems that doncarona.tamu.edu uses coarse or outdated ephemerides for Iapetus. No big deal actually, since there will be no Iapetus events for the next ~14 years 

 

By the way, the zipped archive also contains results for Jupiter's moons for 2024-2026.

Edited by Diff, 19 August 2024 - 01:41 AM.