V. Penumbral lunar eclipse of 2016, August 18


     The beginning of the eclipse is visible from extreme east of Asia,  Austra-
 lia, New Zealand, Northern and west of South America,  Pacific coast of Antarc-
 tica, Pacific ocean.
     The end of the eclipse is visible from  extreme east  of  Asia,  Australia,
 New Zealand,  Northern and west of South America,  Pacific coast of Antarctica,
 Pacific ocean.


                   Universal time of geocentric opposition
                                                       h  m  s
                in right ascension  2016, August 18, 10 25 40.8

                                                  Sun              Moon
                                                h  m  s          h  m  s
  Right ascension  . . . . . . . . . . . . .   9 52 36.546     21 52 36.545
                                                      s                s   
     Hourly motion . . . . . . . . . . . . .       + 9.284         +137.717
                                                ш  '  "          ш  '  "   
  Declination. . . . . . . . . . . . . . . . +12 52 59.65     -11 18 38.69 
                                                      "                "   
     Hourly motion . . . . . . . . . . . . .       -48.73          +531.41 
                                                      "             '  "   
  Equatorial horizontal parallax . . . . . .         8.69         58 38.24 
                                                   '  "             '  "   
  Apparent semidiameter  . . . . . . . . . .     15 48.15         15 58.70 
         
         
         
                         Circumstances of the Eclipse
                                                             Position Angles
                                                           of the Moon's axis
                                                        h  m        o
     Moon enters penumbra . . . . . . .   August 18,   9 25.9    338.92
     Greatest eclipse . . . . . . . . .                9 42.8    338.88
     Moon leaves penumbra . . . . . . .                9 59.2    338.85


 -----------------------------------------------
  Contacts |  Position |The Moon being in the Zenith in
of penumbra|   Angles  |------------------------
 with Limb |  from the |          |            
  of Moon  |North Point| Latitude | Longitude  
 ----------|-----------|----------|-------------       
           |    o  '   |    o  '  |    o  '    
 First     | 160 09.2  | -11 31.9 | 141 04.4 W  
 Last      | 171 21.1  | -11 27.0 | 149 06.1 W 

 Magnitude of the eclipse          0.014  
                                    "     
 Angular radius of the penumbra 4563.04   
                                    "     
 Angular radius of the umbra    2629.48   


-------------------------------------------------------------------------------
  T  |  s  |   d  |   P  |Magnitudes of!  T  |  s  |   d  |   P  |Magnitudes of
     |     |      |      |  penumbral  !     |     |      |      |  penumbral           
-----|-----|------|------|-------------!-----|-----|------|------|-------------
  h m|    "|      |    o |             !  h m|    "|      |    o |             
 9 20| 5533| 2.105| 158.2|      -      ! 9 50| 5490| 2.088| 168.3|    0.011    
   30| 5500| 2.092| 161.5|    0.006    !     |     |      |      |
   40| 5485| 2.086| 164.9|    0.013    !10 00| 5514| 2.097| 171.6|      -      
                     
   T - universal time;
   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.