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[vsnet-obs 18957] New Takamizawa variable (TmzV180)

New Takamizawa variable (TmzV180)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV180).

TmzV180
Takamizawa's semiacurate position: 035910.1 +580107 (2000.0)
(no likely USNO counterpart)
= IRAS03550+5752 035505.5 +575238 (1950.0)
    F12=2.75  F25=1.20  F60=0.40L F100=3.31 
    VAR= 4 LRS=-1
 possibly II: variable star with 'young' O-rich circumstellar shell
 or VII: variable star with more evolved C-rich circumstellar shell
= 035910.9 +580109 (2000.0) IRAS03550+5752 2.743 1.160 0.402L 3.175 4%
= 035910.9 +580109 (2000.0) SSC03550+5752 2.743 1.160 0.402L 3.175

  Takamizawa's comment:

  The star may be a Mira-type variable  with  a renge of 12.4-<15.0p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV180        941108.549  <150p  Tmz.VSOLJ
TmzV180        950127.497  124p  Tmz.VSOLJ
TmzV180        960111.431  141p  Tmz.VSOLJ
TmzV180        970714.711  <146p  Tmz.VSOLJ
TmzV180        970802.715  <150p  Tmz.VSOLJ
TmzV180        971010.696  <150p  Tmz.VSOLJ
TmzV180        971101.613  148p  Tmz.VSOLJ
TmzV180        971123.518  150p  Tmz.VSOLJ
TmzV180        971221.449  147p  Tmz.VSOLJ
TmzV180        980116.428  128p  Tmz.VSOLJ
TmzV180        980703.655  <150p  Tmz.VSOLJ
TmzV180        980823.681  150p  Tmz.VSOLJ
TmzV180        990109.489  142p  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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