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[vsnet-newvar 1106] New Takamizawa variable (TmzV803)

New Takamizawa variable (TmzV803)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV803).

TmzV803
= GSC6937.775 211937.51 -224226.9 (2000.0) 12.38 0
= GSC6937.775 211937.54 -224226.1 (2000.0) 12.77 0
= USNO0600.23742199 211937.590 -224226.33 (2000.0)  9.5 12.2
= 2MASS 211937.512 -224226.64 (2000.0)  0.000  0.000  0.000
= IRAS21167-2255 211645.4 -225512 (1950.0)
     F12=2.09  F25=0.76  F60=0.40L F100=1.00L
     VAR= 0 LRS=-1
  possibly II: variable star with 'young' O-rich 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
= 211936.3 -224232 (2000.0) FSC21167-2255 2.195 0.706 0.200L 0.489L
= 211937.3 -224229 (2000.0) IRAS21167-2255 2.122 0.742 0.400L 1.000L 0%
= 211937.3 -224229 (2000.0) SSC21167-2255 2.122 0.742 0.400L 1.000L
= 211937.5 -224227 (2000.0) 1126 0.95 TYC2-6937.775.1 (11.36 0.09) (12.48 0.19)

  Takamizawa's comment:

  The star may be a semiregular variable  with a range of 11.8-12.6p.

Photographic magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag  code
TmzV803        19940512.754  119p  Tmz.VSOLJ
TmzV803        19940705.622  118p  Tmz.VSOLJ
TmzV803        19940803.601  125p  Tmz.VSOLJ
TmzV803        19940930.556  119p  Tmz.VSOLJ
TmzV803        19941124.449  122p  Tmz.VSOLJ
TmzV803        19950723.670  123p  Tmz.VSOLJ
TmzV803        19951020.456  118p  Tmz.VSOLJ
TmzV803        19960721.663  123p  Tmz.VSOLJ
TmzV803        19970709.631  126p  Tmz.VSOLJ
TmzV803        19970828.585  119p  Tmz.VSOLJ
TmzV803        19991029.464  122p  Tmz.VSOLJ
TmzV803        20011013.465  123p  Tmz.VSOLJ

Observer's code:
  Tmz: K.Takamizawa (Saku-machi,Nagano,Japan)
       SASS (Saku All Sky Survey)
       Inst.: 10cmR F4 twin patrol cameras and 25cm F2.8
       Baker-Schmidt camera T-Max400 120
       Comparison stars mag.:GSC

Relayed from Kesao Takamizawa <k-takamizawa@nifty.ne.jp>

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