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[vsnet-obs 19980] New Takamizawa variable (TmzV310)

New Takamizawa variable (TmzV310)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV310).

TmzV310
= GSC5983.1889 073557.96 -181952.3 (2000.0) 12.27 0 N
= GSC5983.1889 073557.98 -181953.3 (2000.0) 11.63 0 N
= USNO0675.04478476 073557.969 -181953.43 (2000.0)  9.2 12.3
= IRAS07337-1813 073345.0 -181310 (1950.0)
    F12=3.98  F25=2.09  F60=0.40L F100=10.00L
    VAR=13 LRS=-1
 possibly IIIa: variable star with more evolved O-rich c.s. shell
= 073553.9 -181859 (2000.0) M6(III)(Buscombe) - - -
= 073558.4 -181952 (2000.0) IRAS07337-1813 3.968 2.147 0.400L 10.470L 13%
= 073558.4 -181952 (2000.0) SSC07337-1813 3.968 2.147 0.400L 10.470L

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 11.6-12.6p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV310        940314.505  117p  Tmz.VSOLJ
TmzV310        941111.738  116p  Tmz.VSOLJ
TmzV310        950203.546  126p  Tmz.VSOLJ
TmzV310        950927.799  119p  Tmz.VSOLJ
TmzV310        951118.744  120p  Tmz.VSOLJ
TmzV310        951222.685  118p  Tmz.VSOLJ
TmzV310        960211.515  120p  Tmz.VSOLJ
TmzV310        961021.776  119p  Tmz.VSOLJ
TmzV310        961206.707  120p  Tmz.VSOLJ
TmzV310        970103.622  122p  Tmz.VSOLJ
TmzV310        970227.485  119p  Tmz.VSOLJ
TmzV310        971013.791  119p  Tmz.VSOLJ
TmzV310        971103.802  123p  Tmz.VSOLJ
TmzV310        971204.703  121p  Tmz.VSOLJ
TmzV310        971224.641  123p  Tmz.VSOLJ
TmzV310        980121.556  122p  Tmz.VSOLJ
TmzV310        980217.505  121p  Tmz.VSOLJ
TmzV310        980325.461  119p  Tmz.VSOLJ
TmzV310        981115.744  118p  Tmz.VSOLJ
TmzV310        981212.628  119p  Tmz.VSOLJ
TmzV310        990208.557  120p  Tmz.VSOLJ
TmzV310        990404.438  119p  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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