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[vsnet-obs 19986] New Takamizawa variable (TmzV311)

New Takamizawa variable (TmzV311)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV311).

TmzV311
= GSC5984.1690 073713.09 -180644.3 (2000.0) 12.97 0
= GSC5984.1690 073713.11 -180644.6 (2000.0) 12.86 0
= USNO0675.04528444 073713.119 -180644.02 (2000.0)  9.6 12.9
= IRAS07349-1759 073459.6 -175956 (1950.0)
    F12=0.83  F25=0.28  F60=0.40L F100=14.45L
    VAR= 0 LRS=-1
 possibly I: oxygen-rich non-variable star without 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
= 073713.3 -180643 (2000.0) IRAS07349-1759 0.836 0.275 0.400L 14.090L 0%
= 073713.3 -180643 (2000.0) SSC07349-1759 0.836 0.275 0.400L 14.090L
= 073706.0 -180459 (2000.0) M6(III)(Buscombe) - - -

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 11.9-12.4p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV311        940314.505  119p  Tmz.VSOLJ
TmzV311        941111.738  120p  Tmz.VSOLJ
TmzV311        950203.546  122p  Tmz.VSOLJ
TmzV311        950927.799  122p  Tmz.VSOLJ
TmzV311        951118.744  121p  Tmz.VSOLJ
TmzV311        951222.685  121p  Tmz.VSOLJ
TmzV311        960211.515  123p  Tmz.VSOLJ
TmzV311        961021.776  120p  Tmz.VSOLJ
TmzV311        961206.707  119p  Tmz.VSOLJ
TmzV311        970103.622  120p  Tmz.VSOLJ
TmzV311        970227.485  120p  Tmz.VSOLJ
TmzV311        971013.791  119p  Tmz.VSOLJ
TmzV311        971103.802  124p  Tmz.VSOLJ
TmzV311        971204.703  121p  Tmz.VSOLJ
TmzV311        971224.641  120p  Tmz.VSOLJ
TmzV311        980121.556  120p  Tmz.VSOLJ
TmzV311        980217.505  121p  Tmz.VSOLJ
TmzV311        980325.461  121p  Tmz.VSOLJ
TmzV311        981115.744  119p  Tmz.VSOLJ
TmzV311        981212.628  120p  Tmz.VSOLJ
TmzV311        990208.557  120p  Tmz.VSOLJ
TmzV311        990404.438  122p  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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