2018年11月，香港見月掩亮星

WCYue

十一月  (香港標準時間)
日     期 時    間 P  恆星   Sp  Mag  Mag    % Elon Sun  Moon   CA   PA  VA  AA
年  月 日 時 分 秒    編號  D     v    r V  ill     Alt Alt Az   o    o   o   o
18 Nov 12 18 54  7.0 D    2779wK0  3.8  3.2   21+  55     30 226  53N  47   0  54
   R2779 = omicron Sagittarii = 建二
      2779 is double: AB 3.8 13.8 39" 253.2, dT = -117sec
18 Nov 12 20  2 23.4 R    2779wK0  3.8  3.2   22+  55     17 237 -63N 289 233 297
   R2779 = omicron Sagittarii = 建二
      2779 is double: AB 3.8 13.8 39" 253.2, dT = -91sec
18 Nov 23 23 30 57.6 d     648SG8  3.8* 3.3s 100- 173     74 103 -19N  45 116  54
   R648 = Hyadum II = delta 1 Tauri = 畢宿三
       648 is multiple: Aa,Ac 3.8 12.9      350.0, dT = 0.00sec : Aa,Ab 3.9 9.5 0.7"  10.0, dT = +1.7sec : Aa,Ab 3.9 9.5 0.7"  10.0, dT = +1.7sec : AB 3.8 13.2 112" 335.5, dT = +108sec
       648 is a close double. Observations are highly desired
       648 = NSV 1582, 3.72 to 3.77, V
18 Nov 24 00 51 59.0 R     648SG8  3.8* 3.3s 100- 173     84 219  67S 271 234 279
   R648 = Hyadum II = delta 1 Tauri = 畢宿三
       648 is multiple: Aa,Ac 3.8 12.9      350.0, dT = 0.00sec : Aa,Ab 3.9 9.5 0.7"  10.0, dT = +0.34sec : Aa,Ab 3.9 9.5 0.7"  10.0, dT = +0.34sec : AB 3.8 13.2 112" 335.5, dT = -142sec
       648 is a close double. Observations are highly desired
       648 = NSV 1582, 3.72 to 3.77, V
   Distance of 648 to Terminator = 6.4"; to 3km sunlit peak = 0.0"