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[vsnet-obs 20286] New Takamizawa variable (TmzV354)

New Takamizawa variable (TmzV354)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV354).

TmzV354
= USNO0600.03733609 073138.343 -224704.82 (2000.0) 12.2 15.7
= IRAS07294-2240 072929.7 -224036 (1950.0)
    F12=1.10  F25=0.44  F60=0.40L F100=4.36 
    VAR=14 LRS=-1
 possibly II: variable star with 'young' O-rich circumstellar shell
 or VII: variable star with more evolved C-rich circumstellar shell
 or VIa: non-variable star with relatively cold dust at large
      distance, may be carbon-rich
= 073137.5 -224701 (2000.0) IRAS07294-2240 1.065 0.421 0.400L 4.201 14%
= 073137.5 -224701 (2000.0) SSC07294-2240 1.065 0.421 0.400L 4.201
= 073130.0 -224559 (2000.0) M8:III:(Buscombe) - - -

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 13.3-14.1p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV354        940314.501  139p  Tmz.VSOLJ
TmzV354        941111.731  136p  Tmz.VSOLJ
TmzV354        950203.546  134p  Tmz.VSOLJ
TmzV354        950927.799  135p  Tmz.VSOLJ
TmzV354        951118.744  134p  Tmz.VSOLJ
TmzV354        951222.685  139p  Tmz.VSOLJ
TmzV354        961021.768  137p  Tmz.VSOLJ
TmzV354        961206.707  140p  Tmz.VSOLJ
TmzV354        970103.622  135p  Tmz.VSOLJ
TmzV354        970227.485  138p  Tmz.VSOLJ
TmzV354        971013.798  135p  Tmz.VSOLJ
TmzV354        971103.802  134p  Tmz.VSOLJ
TmzV354        971204.695  139p  Tmz.VSOLJ
TmzV354        971224.633  133p  Tmz.VSOLJ
TmzV354        980121.549  137p  Tmz.VSOLJ
TmzV354        980217.497  134p  Tmz.VSOLJ
TmzV354        980325.453  134p  Tmz.VSOLJ
TmzV354        981115.737  141p  Tmz.VSOLJ
TmzV354        981212.628  139p  Tmz.VSOLJ
TmzV354        990208.557  139p  Tmz.VSOLJ
TmzV354        990404.438  136p  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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