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[  Close  ] Warmly celebrate the number of entries in the Chinese Wikipedia exceeded one million  ! The Wikipedia Enthusiast Communication Group  (   Telegram  :  @wikipedia_zh_n  ,   IRC  :  #wikipedia-en  link  , both connected) welcome everyone to join. [  Close  ] Open water swimming  [  edit  ] Wikipedia, the free encyclopedia Open water swimming  is an  outdoor activity to  swim  in the  sea  ,  lake  or  river  and a sport.  Among them, the  triathlon  included a part of open water swimming.  In the  2000 Olympics in Sydney  , triathlon athletes needed 1.5  kilometers  of open water swimming.  2005  Canada  Montreal  's  World Swimming Championships  on with five kilometers, 10 kilometers and 25 kilometers small items.  On Octo...

[  Close  ] Warmly celebrate the number of entries in the Chinese Wikipedia exceeded one million  ! The Wikipedia Enthusiast Communication Group  (   Telegram  :  @wikipedia_zh_n  ,   IRC  :  #wikipedia-en  link  , both connected) welcome everyone to join. [  Close  ] HD 77653  [  Edit  ] Wikipedia, the free encyclopedia HD 77653 Observation data  Epoch  J2000.0 constellation Constellation name to be checked  [1]  [2] Star officer Right ascension 9  h   1  m   44.6  s  [1]  [2] Declination -52° 11′ 18′′  [1]  [2] Stars, etc.  (V) 5.23  [1]  [2] characteristic Spectral classification B9Si  [1]  [2] U-B  color index -0.45  [1]  [2] B-V  color index -0.12  [1]  [2] R-I  color index [1]  [2] Astrometry Radial ...