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III. Partial lunar eclipse of 2013 April 25


The beginning of the eclipse is visible from Eurasia (except for extreme
northeast), Australia, Antarctica, Africa and Madagascar, Indian and a south-
east part of Atlantic oceans.
The end of the eclipse is visible from Eurasia (except a northeast part),
Australia, Antarctica, Africa and Madagascar, Indian and a southern part of At-
lantic oceans.



Universal time of geocentric opposition
h m s
in right ascension 2013, April 4, 20 33 46.4


Sun Moon
h m s h m s
Right ascension . . . . . . . . . . . . . 2 13 55.467 14 13 55.474
s s
Hourly motion . . . . . . . . . . . . . + 9.438 +146.424
o ' " o ' "
Declination. . . . . . . . . . . . . . . . +13 26 56.19 -14 29 29.99
" "
Hourly motion . . . . . . . . . . . . . +48.42 -537.47
" o ' "
Equatorial horizontal parallax . . . . . . 8.74 1 00 02.15
' " ' "
Apparent semidiameter . . . . . . . . . . 15 53.74 16 21.57



Circumstances of the Eclipse
Position Angles
of the Moon's axis
h m o
Moon enters penumbra . . . . . . . April 25, 18 01.6 21.21
Moon enters umbra . . . . . . . . 19 52.5 20.96
Greatest eclipse . . . . . . . . . 20 07.6 20.92
Moon leaves umbra . . . . . . . . 20 22.3 20.89
Moon leaves penumbra . . . . . . . 22 13.2 20.63

---------T-----------T----------------------
ContactsÒ? Position Ò?The Moon being in the Zenith in
of umbraÒ? Angles +----------T-----------
with LimbÒ? from the Ò? Ò? Magnitude of the eclipse 0.018
of Moon Ò?North PointÒ? Latitude Ò? Longitude "
---------+-----------+----------+----------- Angular radius of the penumbra 4655.11
Ò? o ' Ò? o ' Ò? o ' "
First Ò? 21 54.8 Ò? -14 28.9 Ò? 60 56.8 E Angular radius of the umbra 2709.75
Last Ò? 5 56.0 Ò? -14 33.4 Ò? 53 46.0 E

-----T-----T------T------T--------------T-----T-----T------T------T-------------
Ò? Ò? Ò? Ò?Magnitudes of Ò? Ò? Ò? Ò? Ò?Magnitudes of
T Ò? s Ò? d Ò? P +------T-------Ò? T Ò? s Ò? d Ò? P +------T------
Ò? Ò? Ò? Ò?umbralÒ? penum.Ò? Ò? Ò? Ò? Ò?umbralÒ? penum.
Ò? Ò? Ò? eclipseÒ?eclipseÒ? Ò? Ò? Ò? eclipseÒ?eclipse
-----+-----+------+------+------+-------+-----+-----+------+------+------+------
h mÒ? "Ò? Ò? ÒÀ Ò? Ò? Ò? h mÒ? "Ò? Ò? ÒÀ Ò? Ò?
18 00Ò? 5673Ò? 2.095Ò? 64.2Ò? - Ò? - Ò?20 20Ò? 3670Ò? 1.354Ò? 7.2Ò? 0.005Ò? 0.996
10Ò? 5416Ò? 2.000Ò? 61.9Ò? - Ò? 0.110 Ò? 30Ò? 3725Ò? 1.375Ò? 1.9Ò? - Ò? 0.968
20Ò? 5169Ò? 1.909Ò? 59.3Ò? - Ò? 0.235 Ò? 40Ò? 3810Ò? 1.406Ò? 356.9Ò? - Ò? 0.925
30Ò? 4933Ò? 1.822Ò? 56.5Ò? - Ò? 0.355 Ò? 50Ò? 3923Ò? 1.447Ò? 352.1Ò? - Ò? 0.867
40Ò? 4710Ò? 1.739Ò? 53.4Ò? - Ò? 0.469 Ò? Ò? Ò? Ò? Ò? Ò?
50Ò? 4502Ò? 1.662Ò? 50.0Ò? - Ò? 0.575 Ò?21 00Ò? 4062Ò? 1.498Ò? 347.6Ò? - Ò? 0.797
Ò? Ò? Ò? Ò? Ò? Ò? 10Ò? 4224Ò? 1.558Ò? 343.4Ò? - Ò? 0.715
19 00Ò? 4311Ò? 1.592Ò? 46.3Ò? - Ò? 0.672 Ò? 20Ò? 4406Ò? 1.625Ò? 339.5Ò? - Ò? 0.622
10Ò? 4139Ò? 1.528Ò? 42.3Ò? - Ò? 0.759 Ò? 30Ò? 4607Ò? 1.699Ò? 336.0Ò? - Ò? 0.521
20Ò? 3989Ò? 1.473Ò? 38.0Ò? - Ò? 0.835 Ò? 40Ò? 4823Ò? 1.779Ò? 332.7Ò? - Ò? 0.411
30Ò? 3863Ò? 1.426Ò? 33.3Ò? - Ò? 0.899 Ò? 50Ò? 5054Ò? 1.863Ò? 329.8Ò? - Ò? 0.294
40Ò? 3764Ò? 1.389Ò? 28.4Ò? - Ò? 0.949 Ò? Ò? Ò? Ò? Ò? Ò?
50Ò? 3694Ò? 1.363Ò? 23.2Ò? - Ò? 0.985 Ò?22 00Ò? 5296Ò? 1.953Ò? 327.1Ò? - Ò? 0.171
Ò? Ò? Ò? Ò? Ò? Ò? 10Ò? 5549Ò? 2.046Ò? 324.6Ò? - Ò? 0.042
20 00Ò? 3654Ò? 1.349Ò? 17.9Ò? 0.014Ò? 1.005 Ò? 20Ò? 5811Ò? 2.142Ò? 322.4Ò? - Ò? -
10Ò? 3646Ò? 1.346Ò? 12.5Ò? 0.017Ò? 1.008 Ò? Ò? Ò? Ò? Ò? Ò?

T - universal time (TDT-UT1= 67.0s);
s - the angular distance between the centers of the Moon and the shadow;
d - the linear distance between the Moon's center and that of the shadow
in terms of the shadow's radius;
P - the position angle of the Moon's disk semi-diameter directed towards
the shadow's center.