IV. Partial lunar eclipse of 2012 June 4
The beginning of the eclipse is visible from south-western Northern, Centr-
al and western South Americas, Antarctica, Australia, New Zealand, Pacific oce-
an.
The end of the eclipse is visible from the extreme east of Asia, Antarcti-
ca, Australia, New Zealand, eastern Indian and Pacific oceans.
Universal time of geocentric opposition
h m s
in right ascension 2012, June 4, 11 01 30.7
Sun Moon
h m s h m s
Right ascension . . . . . . . . . . . . . 4 51 33.023 16 51 33.028
s s
Hourly motion . . . . . . . . . . . . . +10.289 +162.427
� ' " � ' "
Declination. . . . . . . . . . . . . . . . +22 30 15.51 -21 39 54.56
" "
Hourly motion . . . . . . . . . . . . . +16.81 - 59.19
" � ' "
Equatorial horizontal parallax . . . . . . 8.67 1 01 02.26
' " ' "
Apparent semidiameter . . . . . . . . . . 15 45.89 16 37.94
Circumstances of the Eclipse
Position Angles
of the Moon's axis
h m �
Moon enters penumbra . . . . . . . June 4, 8 46.4 8.80
Moon enters umbra . . . . . . . . 9 59.4 8.49
Greatest eclipse . . . . . . . . . 11 03.2 8.21
Moon leaves umbra . . . . . . . . 12 07.0 7.93
Moon leaves penumbra . . . . . . . 13 20.0 7.61
--------------------------------------------
Contacts| Position |The Moon being in the Zenith in
of umbra| Angles |----------------------
with Limb| from the | |
of Moon |North Point| Latitude | Longitude
---------|-----------|----------|-----------
| o ' | o ' | o '
First | 144 36.8 � -21 46.7 � 150 54.3 W
Last | 217 37.8 � -21 48.8 � 178 32.1 E
Magnitude of the eclipse 0.372
"
Angular radius of the penumbra 4708.48
"
Angular radius of the umbra 2779.49
--------------------------------------------------------------------------------
| | | |Magnitudes of�� | | | |Magnitudes of
T | s | d | P |-------------�� T | s | d | P |-------------
| | | |umbral| penum.� | | | |umbral| penum.
| | | eclipse|eclipse� | | | eclipse|eclipse
-----+-----+------+------+------+------++-----+-----+------+------+------+------
h m� "� � � � � �� h m� "� � � � �
8 40� 5900� 2.120� 113.7� - � - ��11 10� 3030� 1.090� 177.5� 0.374� 1.341
50� 5599� 2.012� 115.6� - � 0.055�� 20� 3078� 1.108� 184.0� 0.350� 1.317
� � � � � �� 30� 3166� 1.139� 190.3� 0.306� 1.273
9 00� 5304� 1.907� 117.6� - � 0.203�� 40� 3289� 1.183� 196.2� 0.245� 1.211
10� 5017� 1.804� 119.9� - � 0.346�� 50� 3444� 1.239� 201.6� 0.167� 1.134
20� 4739� 1.704� 122.5� - � 0.486�� � � � � �
30� 4472� 1.608� 125.4� - � 0.619��12 00� 3627� 1.305� 206.5� 0.075� 1.042
40� 4218� 1.517� 128.7� - � 0.746�� 10� 3834� 1.380� 211.0� - � 0.938
50� 3979� 1.431� 132.3� - � 0.866�� 20� 4061� 1.461� 214.9� - � 0.824
� � � � � �� 30� 4306� 1.549� 218.4� - � 0.702
10 00� 3758� 1.352� 136.4� 0.010� 0.976�� 40� 4564� 1.643� 221.5� - � 0.572
10� 3559� 1.280� 141.0� 0.110� 1.076�� 50� 4835� 1.740� 224.3� - � 0.436
20� 3385� 1.218� 146.1� 0.197� 1.163�� � � � � �
30� 3241� 1.166� 151.7� 0.269� 1.235��13 00� 5116� 1.841� 226.7� - � 0.296
40� 3130� 1.126� 157.7� 0.325� 1.291�� 10� 5405� 1.945� 229.0� - � 0.151
50� 3056� 1.100� 164.1� 0.361� 1.328�� 20� 5701� 2.052� 230.9� - � 0.002
� � � � � �� 30� 6004� 2.161� 232.7� - � -
11 00� 3023� 1.087� 170.8� 0.378� 1.345�� � � � � �
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.