Partial lunar eclipse of 2009 December 31


     The beginning of the eclipse visibly in Eurasia, Africa, Madagascar, Aust-
 ralia (except for its extreme south-east), in Greenland, at Arctic Ocean,  in
 north-western Pacific and in Indian Oceans.
     The end of the eclipse visibly in Eurasia, Africa, Madagascar, in western
 part of Australia, Greenland, at Arctic Ocean, in south-eastern Atlantic  and
 in Indian Oceans.


                   Universal time of geocentric opposition
                                                         h  m  s
                in right ascension  2009, December 31, 19 04 46.9

                                                  Sun              Moon
                                                h  m  s          h  m  s
  Right ascension  . . . . . . . . . . . . .  18 44 33.913      6 44 33.913
                                                      s                s
     Hourly motion . . . . . . . . . . . . .       +11.038         +162.672
                                                o  '  "          o  '  "
  Declination. . . . . . . . . . . . . . . . -23 02 36.59     +24 03 03.20
                                                      "                "
     Hourly motion . . . . . . . . . . . . .       +11.75          -376.95
                                                      "             '  "
  Equatorial horizontal parallax . . . . . .         8.94         60 57.31
                                                   '  "             '  "
  Apparent semidiameter  . . . . . . . . . .     16 15.92         16 36.60


                         Circumstances of the Eclipse
                                                             Position Angles
                                                           of the Moon's axis
                                                        h  m        o
     Moon enters penumbra . . . . . . .  December 31, 17 15.3      2.44
     Moon enters umbra  . . . . . . . .               18 52.0      2.87
     Greatest eclipse . . . . . . . . .               19 22.7      3.00
     Moon leaves umbra  . . . . . . . .               19 53.6      3.13
     Moon leaves penumbra . . . . . . .               21 30.2      3.55

         --------------------------------------------
          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    |  173 09.6 | +24 13.0 |  77 39.3 E
         Last     |  207 07.2 | +24 06.5 |  62 55.3 E

              Magnitude of the eclipse          0.080
                                                 "
              Angular radius of the penumbra 4735.00
                                                 "
              Angular radius of the umbra    2744.39


-------------------------------------------------------------------------------
     |     |      |      |Magnitudes of!     |     |      |      |Magnitudes of
  T  |  s  |   d  |   P  |-------------!  T  |  s  |   d  |   P  |-------------
     |     |      |      |umbral| penum.     |     |      |      |umbral| penum.
     |     |      |      eclipsełeclipse     |     |      |      eclipsełeclipse
-----|-----|------|------|------|------!-----|-----|------|------|------|------
  h m|    "|      |    o |      |      !  h m|    "|      |    o |      |
17 10| 5869| 2.140| 136.9|   -  |   -  !19 30| 3581| 1.305| 194.2| 0.075| 1.074
   20| 5595| 2.040| 139.2|   -  | 0.065!   40| 3623| 1.320| 199.8| 0.055| 1.053
   30| 5330| 1.943| 141.6|   -  | 0.198!   50| 3699| 1.348| 205.2| 0.017| 1.016
   40| 5075| 1.850| 144.3|   -  | 0.325!     |     |      |      |      |
   50| 4832| 1.761| 147.3|   -  | 0.447!20 00| 3805| 1.386| 210.4|   -  | 0.963
     |     |      |      |      |      !   10| 3940| 1.435| 215.3|   -  | 0.895
18 00| 4602| 1.678| 150.6|   -  | 0.562!   20| 4101| 1.494| 219.8|   -  | 0.815
   10| 4389| 1.600| 154.2|   -  | 0.669!   30| 4285| 1.561| 223.9|   -  | 0.724
   20| 4195| 1.529| 158.1|   -  | 0.766!   40| 4489| 1.635| 227.7|   -  | 0.622
   30| 4022| 1.466| 162.4|   -  | 0.853!   50| 4710| 1.715| 231.1|   -  | 0.511
   40| 3873| 1.412| 167.1|   -  | 0.927!     |     |      |      |      |
   50| 3751| 1.367| 172.1|   -  | 0.988!21 00| 4946| 1.801| 234.3|   -  | 0.393
     |     |      |      |      |      !   10| 5196| 1.892| 237.1|   -  | 0.268
19 00| 3659| 1.334| 177.4| 0.036| 1.034!   20| 5456| 1.987| 239.7|   -  | 0.138
   10| 3599| 1.312| 182.9| 0.066| 1.064!   30| 5727| 2.085| 242.1|   -  | 0.003
   20| 3573| 1.302| 188.6| 0.079| 1.078!   40| 6006| 2.187| 244.2|   -  |   -

                                      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.