Комета Yi-SWAN (C/2009 F6) в апреле 2009 года.
 
Путь кометы по небу в апреле 2009.
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 Дата    Пр.восх.    Склонение      РДС     РДЗ  Зв.в. Элонг Созв 
    ч.  м.  с.     °  '  "      а.е.    а.е.   m     °  
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Апрель:
 1   23h14m39.88s  +52 32' 38.7"  1.3885  1.7732  8.7  51.3 And
 3   23h29m23.43s  +53 27' 17.8"  1.3767  1.7682  8.6  50.9 Cas
 5   23h44m44.52s  +54 16' 05.4"  1.3654  1.7650  8.6  50.4 Cas
 7   00h00m39.60s  +54 58' 23.4"  1.3546  1.7636  8.6  49.8 Cas
 9   00h17m03.78s  +55 33' 38.5"  1.3445  1.7641  8.5  49.2 Cas
11   00h33m50.82s  +56 01' 23.7"  1.3349  1.7663  8.5  48.6 Cas
13   00h50m53.35s  +56 21' 19.8"  1.3259  1.7704  8.5  47.9 Cas
15   01h08m03.15s  +56 33' 16.5"  1.3175  1.7761  8.4  47.1 Cas
17   01h25m11.56s  +56 37' 13.0"  1.3098  1.7836  8.4  46.3 Cas
19   01h42m10.00s  +56 33' 17.8"  1.3027  1.7926  8.4  45.5 Cas
21   01h58m50.38s  +56 21' 48.5"  1.2963  1.8032  8.4  44.6 Per
23   02h15m05.52s  +56 03' 09.8"  1.2905  1.8153  8.4  43.7 Per
25   02h30m49.43s  +55 37' 52.7"  1.2854  1.8287  8.4  42.7 Per
27   02h45m57.48s  +55 06' 32.4"  1.2811  1.8435  8.4  41.7 Per
29   03h00m26.40s  +54 29' 46.4"  1.2774  1.8595  8.4  40.7 Per
=============================================== С.Гурьянов ====
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