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[vsnet-obs 18730] New Takamizawa variable (TmzV133)

New Takamizawa variable (TmzV133)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV133).

TmzV133
= GSC2897.2362 044938.78 +401722.2 (2000.0) 13.23 1
= USNO1275.03840056 044938.772 +401722.10 (2000.0) 12.2 16.3
= IRAS04461+4012 044611.5 +401212 (1950.0)
    F12=2.75  F25=1.20  F60=0.40L F100=1.20L
    VAR= 0 LRS=-1
 possibly II: variable star with 'young' O-rich circumstellar shell
 or VII: variable star with more evolved C-rich circumstellar shell
= 044938.9 +401721 (2000.0) IRAS04461+4012 2.834 1.162 0.400L 1.191L 0%
= 044938.9 +401721 (2000.0) SSC04461+4012 2.834 1.162 0.400L 1.191L

  Takamizawa's comment:

  The star may be a semiregular variable (SR) with a range of 12.8-14.0p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV133        940302.540  137p  Tmz.VSOLJ
TmzV133        940810.775  140p  Tmz.VSOLJ
TmzV133        941108.597  130p  Tmz.VSOLJ
TmzV133        941224.488  134p  Tmz.VSOLJ
TmzV133        950320.515  134p  Tmz.VSOLJ
TmzV133        950823.769  133p  Tmz.VSOLJ
TmzV133        951128.608  135p  Tmz.VSOLJ
TmzV133        960109.422  137p  Tmz.VSOLJ
TmzV133        960922.747  136p  Tmz.VSOLJ
TmzV133        961015.731  133p  Tmz.VSOLJ
TmzV133        961203.547  129p  Tmz.VSOLJ
TmzV133        970802.749  133p  Tmz.VSOLJ
TmzV133        971123.615  134p  Tmz.VSOLJ
TmzV133        980318.465  135p  Tmz.VSOLJ
TmzV133        980820.731  133p  Tmz.VSOLJ
TmzV133        981024.609  130p  Tmz.VSOLJ
TmzV133        981218.596  128p  Tmz.VSOLJ

Observer's code:
  Tmz: K.Takamizawa (Saku-machi,Nagano,Japan)
       Inst.: 10cmR F4 twin patrol cameras  T-Max400 120
       Comparison stars mag.:GSC

Relayed from Kesao Takamizawa <GHA07243@nifty.ne.jp>

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