[vsnet-ecl 6495] beta Per observations by K.Kanai (9,12/Dec/2017)

[K.Nagai]

Visual magnitude estimates by VSOLJ members

object          YYMMDD(UT)       mag  code
PERbeta        20171212.444      26  Kit.VSOLJ
PERbeta        20171212.451      27  Kit.VSOLJ
PERbeta        20171212.458      27  Kit.VSOLJ
PERbeta        20171212.465      28  Kit.VSOLJ
PERbeta        20171212.472      28  Kit.VSOLJ
PERbeta        20171212.479      29  Kit.VSOLJ
PERbeta        20171212.486      29  Kit.VSOLJ
PERbeta        20171212.493      30  Kit.VSOLJ
PERbeta        20171212.500      30  Kit.VSOLJ
PERbeta        20171212.507      31  Kit.VSOLJ
PERbeta        20171212.514      31  Kit.VSOLJ
PERbeta        20171212.521      32  Kit.VSOLJ
PERbeta        20171212.528      32  Kit.VSOLJ
PERbeta        20171212.535      33  Kit.VSOLJ
PERbeta        20171212.542      33  Kit.VSOLJ
PERbeta        20171212.549      34  Kit.VSOLJ
PERbeta        20171212.556      34  Kit.VSOLJ
PERbeta        20171212.562      34  Kit.VSOLJ
PERbeta        20171212.569      34  Kit.VSOLJ
PERbeta        20171212.576      34  Kit.VSOLJ
PERbeta        20171212.583      33  Kit.VSOLJ
PERbeta        20171212.590      33  Kit.VSOLJ
PERbeta        20171212.597      33  Kit.VSOLJ
PERbeta        20171212.604      32  Kit.VSOLJ
PERbeta        20171212.611      32  Kit.VSOLJ
PERbeta        20171212.618      32  Kit.VSOLJ
PERbeta        20171212.625      31  Kit.VSOLJ
PERbeta        20171212.632      31  Kit.VSOLJ
PERbeta        20171212.639      31  Kit.VSOLJ
PERbeta        20171212.646      31  Kit.VSOLJ
PERbeta        20171212.649      30  Kit.VSOLJ
PERbeta        20171212.653      30  Kit.VSOLJ
PERbeta        20171212.660      30  Kit.VSOLJ
PERbeta        20171212.667      29  Kit.VSOLJ
PERbeta        20171212.674      29  Kit.VSOLJ
PERbeta        20171212.681      29  Kit.VSOLJ

Observer : K.Kanai (Gunma,Japan)
instruments: naked eye

minI PERbeta 2458097.191 0.002 Hel Kit.VSOLJ n=25 (calculated by Nagai)
minI PERbeta 2458100.073 0.002 Hel Kit.VSOLJ n=36 (calculated by Nagai)

beta Per JD(hel)=2458097.191 C=2458097.083 E=4344 O-C=+0.108
beta Per JD(hel)=2458100.073 C=2458099.951 E=4345 O-C=+0.122

min=2445641.5135+2.8673043xE (GCVS, Mar.2017)


    - 09/Dec/2017 beta Per (By Mr. Kanai) -
02 +                                     
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   + ** ***                              
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03 +            ***** *                  
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   +                      ** **          
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04 +                                     
    +------+------+------+------+------+-
   13     14     15     16     17     18  (UT)


    - 12/Dec/2017 beta Per (By Mr. Kanai) -
02 +                                     
   |                                     
   +   *                                 
   |    ****                             
03 +        *****            ********    
   |             ***    *****            
   +                ****                 
   |                                     
04 +                                     
    +----+----+----+----+----+----+----+-
   10   11   12   13   14   15   16   17  (UT)