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[vsnet-obs 18854] New Takamizawa variable (TmzV154)

New Takamizawa variable (TmzV154)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV154).

TmzV154
= GSC2397.8 051041.99 +335718.0 (2000.0) 12.85 1 N
= USNO1200.02977879 051042.030 +335717.51 (2000.0) 99.9 14.9
= IRAS05074+3353 050724.0 +335334 (1950.0)
    F12=2.75  F25=1.10  F60=0.40L F100=10.00L
    VAR=86 LRS=-1
 possibly II: variable star with 'young' O-rich circumstellar shell
 or VII: variable star with more evolved C-rich circumstellar shell
= 051041.5 +335714 (2000.0) IRAS05073+3353 2.885 1.123 0.400L 9.850L 86%
= 051041.5 +335714 (2000.0) SSC05073+3353 2.885 1.123 0.400L 9.850L

  Takamizawa's comment:

  The star may be a semiregular variable (SR) with a range of 12.0-13.8p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV154        940302.536  127p  Tmz.VSOLJ
TmzV154        940329.467  125p  Tmz.VSOLJ
TmzV154        940810.767  127p  Tmz.VSOLJ
TmzV154        941108.608  135p  Tmz.VSOLJ
TmzV154        950320.515  129p  Tmz.VSOLJ
TmzV154        950823.769  134p  Tmz.VSOLJ
TmzV154        950927.717  134p  Tmz.VSOLJ
TmzV154        951128.608  135p  Tmz.VSOLJ
TmzV154        960109.422  130p  Tmz.VSOLJ
TmzV154        960922.747  137p  Tmz.VSOLJ
TmzV154        961015.731  138p  Tmz.VSOLJ
TmzV154        961203.547  135p  Tmz.VSOLJ
TmzV154        970802.749  136p  Tmz.VSOLJ
TmzV154        971123.615  136p  Tmz.VSOLJ
TmzV154        980318.474  120p  Tmz.VSOLJ
TmzV154        980820.731  137p  Tmz.VSOLJ
TmzV154        981024.609  132p  Tmz.VSOLJ
TmzV154        981218.596  126p  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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