1979 06 16 : J3 eclipses J1
Meudon observatory (France)
83cm refractor
altitude 180m
lat=48d48'17.5"N lon=2d13'51.8"E
twilight
visual observation
column 1: minutes from 20h UT
column 2: relative magnitude of sat J1 referred to sat J3
17.04	0.48171
17.52	0.59145
18.12	0.59145
18.72	0.6829
19.8	0.70119
19.92	0.77435
20.16	0.79264
20.64	0.79264
21	0.79264
21.36	0.90238
21.84	0.99383
22.32	1.10357
22.56	1.19502
22.92	1.48766
25	2
25.32	1.50595
25.56	1.30476
25.92	1.10357
26.4	0.99383
26.76	0.90238
27.24	0.81093
27.6	0.70119
28.08	0.70119
28.56	0.59145
28.92	0.59145
29.64	0.48171
30.12	0.5
30.84	0.40855
31.2	0.5
31.8	0.5