2022-08-23, 05:45 PM
(This post was last modified: 2022-08-23, 06:32 PM by bigmasterdrago.)
I did a tiny bit more research. The apps that show Janus appear to be taking Planetary Aberration into account and cannot turn it off. Both Janus and Daphnis (mag 24.6) are only 1.2" apart and are occulted by the rings if that is turned off. This might be why ST does not show Janus as it is behind the edge of the ring at the time specified with Planetary Aberration off. Did not find in help anything on Planetary Aberration.
Just taking a look at future good time to spot Janus, I see that in a few years, (March 26, 2039, ~2:20) it is at near max distance from the center of Jupiter and the rings are edge on.
Just taking a look at future good time to spot Janus, I see that in a few years, (March 26, 2039, ~2:20) it is at near max distance from the center of Jupiter and the rings are edge on.