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Penumbral lunar eclipse of 2009 August 6


The beginning of the eclipse visibly in Europe, a south-western part of
Asia, in Africa, Madagascar, in South America (except for its extreme north-
west), in Antarctica, at Indian and Atlantic Oceans.
The end of the eclipse visibly in south-western part of Europe, in extreme
south-western of Asia, in Africa, Madagascar, in Southern and Northern America
(except for an extreme north-western part), in Antarctica, in south-eastern
Pacific and in Atlantic Oceans.


Universal time of geocentric opposition
h m s
in right ascension 2009, August 6, 1 44 57.4

Sun Moon
h m s h m s
Right ascension . . . . . . . . . . . . . 9 04 52.459 21 04 52.459
s s
Hourly motion . . . . . . . . . . . . . +9.576 +114.979
я€ ' " я€ ' "
Declination. . . . . . . . . . . . . . . . +16 41 53.66 -15 22 25.37
" "
Hourly motion . . . . . . . . . . . . . -41.25 +665.67
" ' "
Equatorial horizontal parallax . . . . . . 8.67 54 11.90
' " ' "
Apparent semidiameter . . . . . . . . . . 15 46.15 14 46.13


Circumstances of the Eclipse
Position Angles
of the Moon's axis
h m я€
Moon enters penumbra . . . . . . . August 5, 23 00.9 345.21
Greatest eclipse . . . . . . . . . August 6, 0 39.2 344.97
Moon leaves penumbra . . . . . . . 2 17.1 344.74

--------------------------------------------
Contacts| Position |The Moon being in the Zenith in
of Penumbra| Angles -----------------------
with Limb| from the | |
of Moon |North Point| Latitude | Longitude
---------|-----------|----------|-----------
| я€ ' | я€ ' | я€ '
First | 126 39.4 | -15 58.6 | 15 03.2 E
Last | 189 01.3 | -15 22.4 | 32 33.1 W

Magnitude of the eclipse 0.426
"
Angular radius of the penumbra 4290.04
"
Angular radius of the umbra 2360.32


-------------------------------------------------------------------------------
| | | |Magnitudes of! | | | |Magnitudes of
T | s | d | P | Penumbral ! T | s | d | P | Penumbral
| | | | Eclipse ! | | | | Eclipse
-----|-----|------|------|-------------!-----|-----|------|------|-------------
h m| "| | o | ! h m| "| | o |
23 00| 5185| 2.197| 126.4| - ! 0 50| 4423| 1.874| 161.7| 0.420
10| 5046| 2.138| 129.1| 0.071 ! | | | |
20| 4919| 2.084| 131.8| 0.142 ! 1 00| 4450| 1.885| 165.2| 0.405
30| 4804| 2.036| 134.8| 0.207 ! 10| 4493| 1.904| 168.7| 0.380
40| 4702| 1.992| 137.8| 0.264 ! 20| 4553| 1.929| 172.1| 0.346
50| 4614| 1.955| 141.0| 0.313 ! 30| 4628| 1.961| 175.3| 0.304
| | | | ! 40| 4719| 1.999| 178.5| 0.253
0 00| 4542| 1.924| 144.3| 0.354 ! 50| 4823| 2.043| 181.5| 0.194
10| 4485| 1.900| 147.7| 0.386 ! | | | |
20| 4444| 1.883| 151.1| 0.409 ! 2 00| 4940| 2.092| 184.4| 0.128
30| 4420| 1.873| 154.6| 0.422 ! 10| 5069| 2.147| 187.2| 0.055
40| 4413| 1.870| 158.2| 0.426 ! 20| 5210| 2.207| 189.8| -

s
T - universal time ( TDT - UT1 = 66.0 );
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.