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[vsnet-obs 20036] New Takamizawa variable (TmzV316)

New Takamizawa variable (TmzV316)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV316).

TmzV316
= USNO0675.03936285 072143.326 -153528.51 (2000.0) 11.0 18.5
= IRAS07194-1529 071927.3 -152942 (1950.0)
    F12=3.63  F25=0.91  F60=0.40L F100=12.02L
    VAR= 5 LRS=-1
 possibly I: oxygen-rich non-variable star without circumstellar shell
 or VIa: non-variable star with relatively cold dust at large
      distance, may be carbon-rich
= 072143.3 -153528 (2000.0) CS1672 - 15.5 9.5 -
= 072143.5 -153527 (2000.0) IRAS07194-1529 3.476 0.920 0.400L 11.740L 5%
= 072143.5 -153527 (2000.0) SSC07194-1529 3.476 0.920 0.400L 11.740L
= 072148.0 -153600 (2000.0) C(Buscombe) V=15.5 - -

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 13.3-15.1p.
The star is visible at mag ~16 on Real-Sky CD.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV316        940314.505  138p  Tmz.VSOLJ
TmzV316        941111.738  140p  Tmz.VSOLJ
TmzV316        950203.546  142p  Tmz.VSOLJ
TmzV316        950927.799  133p  Tmz.VSOLJ
TmzV316        951118.744  138p  Tmz.VSOLJ
TmzV316        951222.685  139p  Tmz.VSOLJ
TmzV316        960211.515  142p  Tmz.VSOLJ
TmzV316        961021.776  139p  Tmz.VSOLJ
TmzV316        961206.707  140p  Tmz.VSOLJ
TmzV316        970103.622  141p  Tmz.VSOLJ
TmzV316        970227.485  138p  Tmz.VSOLJ
TmzV316        971013.791  142p  Tmz.VSOLJ
TmzV316        971103.802  143p  Tmz.VSOLJ
TmzV316        971204.703  141p  Tmz.VSOLJ
TmzV316        971224.641  142p  Tmz.VSOLJ
TmzV316        980121.556  140p  Tmz.VSOLJ
TmzV316        980217.505  140p  Tmz.VSOLJ
TmzV316        980325.461  141p  Tmz.VSOLJ
TmzV316        981115.744  142p  Tmz.VSOLJ
TmzV316        981212.628  142p  Tmz.VSOLJ
TmzV316        990208.557  151p  Tmz.VSOLJ
TmzV316        990404.438  <147p  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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