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[vsnet-obs 20239] New Takamizawa variable (TmzV340)

New Takamizawa variable (TmzV340)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV340).

TmzV340
= GSC6541.693 072249.55 -243819.6 (2000.0) 14.54 0
= USNO0600.03401078 072249.544 -243819.91 (2000.0) 13.0 16.1
= IRAS07207-2432 072044.5 -243227 (1950.0)
    F12=1.10  F25=0.76  F60=0.40L F100=14.45L
    VAR=28 LRS=-1
 possibly IIIa: variable star with more evolved O-rich c.s. shell
 or VIb: variable star with relatively hot dust close to
      the star and relatively cold dust at large distance
      may be O-rich
 or VII: variable star with more evolved C-rich circumstellar shell
= 072249.5 -243816 (2000.0) IRAS07207-2432 1.095 0.763 0.400L 14.510L 28%
= 072249.5 -243816 (2000.0) SSC07207-2432 1.095 0.763 0.400L 14.510L
= 072248.0 -243659 (2000.0) M8(III)(Buscombe) - - -

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 13.6-14.8p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV340        940314.501  148p  Tmz.VSOLJ
TmzV340        941111.731  138p  Tmz.VSOLJ
TmzV340        950203.546  143p  Tmz.VSOLJ
TmzV340        950927.799  140p  Tmz.VSOLJ
TmzV340        951118.744  138p  Tmz.VSOLJ
TmzV340        951222.685  137p  Tmz.VSOLJ
TmzV340        961021.768  146p  Tmz.VSOLJ
TmzV340        961206.707  140p  Tmz.VSOLJ
TmzV340        970103.622  147p  Tmz.VSOLJ
TmzV340        970227.485  141p  Tmz.VSOLJ
TmzV340        971013.798  136p  Tmz.VSOLJ
TmzV340        971103.802  137p  Tmz.VSOLJ
TmzV340        971204.695  136p  Tmz.VSOLJ
TmzV340        971224.633  142p  Tmz.VSOLJ
TmzV340        980121.549  140p  Tmz.VSOLJ
TmzV340        980217.497  139p  Tmz.VSOLJ
TmzV340        980325.453  139p  Tmz.VSOLJ
TmzV340        981115.737  140p  Tmz.VSOLJ
TmzV340        981212.628  140p  Tmz.VSOLJ
TmzV340        990208.557  139p  Tmz.VSOLJ
TmzV340        990404.438  144p  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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