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
                                                ø  '  "          ø  '  "
  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        ø
     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
         ---------|-----------|----------|-----------
                  |     ø  '  |    ø  '  |    ø  '
         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.