Nice observation, congratulations!
In Japan we had a chance to observe HD 95848 (= HIP 54057) on April 12, but it was cloudy in my city so we could not observe the occultation.
Tonight, on April 13, we have a chance to observe the occultation of HD 95848 (the same) by Ganymede, but it is cloudy, too!
Ganymede-HD 95848 occultation can be seen in whole Japan, Korea, east China, and east Russia.