Mutual eclipses of the satellites of Jupiter in 2014

All instants are given in UT.

In the list, penumbral eclipses and the penumbral phases of umbral elipses are not taken into consideration.

4e3 means that the shadow of satellite IV falls on satellite III, etc.

"Start" is the instant of first exterior contact of the umbra with a satellite, or the beginning of the eclipse. "End" is the instant of last contact of the umbra with the satellite. These times are given in hours, minutes, and seconds.

Column "Magn." gives the magnitude of the eclipse in %, that is, the fraction of the diameter of the second satellite that is eclipsed in the umbra of the first satellite at maximum phase. 'A' means that the eclipse is "annular"; in that case, the umbra of the first satellite falls entirely on the second satellite, so only an annulus of this satellite remains illuminated by the Sun; but, of course, an observer in the umbra would see a total, not an annular eclipse of the Sun.

Column "Dur." gives the duration of the annular phase, in seconds.

Column "Flux drop" gives the drop of the flux (brillance) of the eclipsed satellite at maximum phase, in %. In the calculation, the contribution of the penumbra has been taken into account.

The next column gives the decrease of the (stellar) magnitude of the eclipsed satellite, at maximum phase. In the calculation, the contribution of the penumbra has been taken into account. Don't confuse this magnitude (which is similar to magnitudes of stars) with the magnitude of the eclipse given in the column "Magn."!

IMPORTANT: Not all these events are visible from a given place!

Date
2014
Satel.Start
h m s
End
h m s
Magn.
%
Dur.
s
Flux
drop
%
Magn.
decrease
Sep114e320 28 5421 27 04A 64277691.27
294e202 56 3803 02 41 5 300.39
Oct 53e417 56 5618 04 40 2 160.18
6-73e423 37 2200 33 38A 79205922.69
314e302 49 0104 18 51A 551451741.46
314e314 53 2316 30 0944 470.69
Nov253e402 27 3103 21 5141 530.81
253e419 29 2820 15 5216 210.25
262e421 39 4021 59 39A 19810410.58
Dec 92e322 42 0222 43 54 1 70.08
172e302 27 1402 37 2125 220.27
214e103 18 5703 27 09A 42137791.68
214e111 54 0012 06 22A 61123892.37
242e306 27 2606 42 29A 33405340.46
252e309 27 3710 35 0439 280.35
272e105 40 5905 44 51 1 40.04
302e119 26 5419 34 25 7 80.09
312e310 48 2011 08 55A 36583350.47

NOTE -- September 29: satellite II is in transit over Jupiter.

Data provided by Jean Meeus.

Section Director
Steve Harvey

Section Director, Steve Harvey

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