Table 1 HST STIS G430L/G750L observations of Europa.

Date
(universal
time)
Time
(start/end)
Sub-
observer
longitude
Sub-
observer
latitude
Angular size
of Europa
(arcseconds)
2017 May 2300:20/01:41224−3.060.91
2017 Jun 2908:19/08:5547−2.910.82
2017 Aug 104:43/05:20133−2.910.75
2017 Aug 612:27/13:47314−2.920.74