Tuesday, September 8, 2026

A daytime partial-occultation of Jupiter

 Many (most?) people don't know that some stars and planets are bright enough to be seen during broad daylight, if you know where and how to look.  Today the moon passed in front of the planet Jupiter (an occultation).  From my location here in Creede, the occultation was partial, meaning the Moon obscured only part of Jupiter's disc.  Maximum occultation occurred at about 1:14pm MDT, at which time 29% of Jupiter's diameter was obscured.

The following images were obtained with an Apertura 60mmED f/6 refractor.  Clouds nearly obscured the event, but a hole opened up just as the Moon was passing Jupiter.  I missed the beginning, but managed to see the exit and very nearly the maximum occultation.

Jupiter (left) about 2 hr before occultation

 

The Moon and Jupiter about 1 hr before occultation

 
Jupiter partially obscured.  About 1 min past maximum.

About 13 minutes past maximum


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