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[vsnet-obs 21871] New Takamizawa variable (TmzV471)

New Takamizawa variable (TmzV471)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV471).

TmzV471
= GSC7121.1084 081230.57 -300905.2 (2000.0) 11.98 6
= USNO0525.06408651 081230.569 -300905.40 (2000.0) 11.3 14.4
= IRAS08104-3000 081029.9 -300004 (1950.0)
    F12=0.63  F25=0.28  F60=0.40L F100=7.58L
    VAR=11 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
= 081231.0 -300907 (2000.0) IRAS08104-3000 0.657 0.285 0.400L 7.440L 11%
= 081231.0 -300907 (2000.0) SSC08104-3000 0.657 0.285 0.400L 7.440L
= 081223.9 -300859 (2000.0) M7(III)(Buscombe) - - -

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 12.3-13.0p.

object         YYMMDD(UT)   mag  code
TmzV471        941111.724  128p  Tmz.VSOLJ
TmzV471        950220.528  123p  Tmz.VSOLJ
TmzV471        951118.735  129p  Tmz.VSOLJ
TmzV471        951222.701  129p  Tmz.VSOLJ
TmzV471        960211.540  128p  Tmz.VSOLJ
TmzV471        961021.828  127p  Tmz.VSOLJ
TmzV471        970227.495  126p  Tmz.VSOLJ
TmzV471        971013.806  125p  Tmz.VSOLJ
TmzV471        971103.834  126p  Tmz.VSOLJ
TmzV471        971203.741  125p  Tmz.VSOLJ
TmzV471        971231.679  128p  Tmz.VSOLJ
TmzV471        980322.516  130p  Tmz.VSOLJ
TmzV471        981115.785  129p  Tmz.VSOLJ
TmzV471        990208.537  128p  Tmz.VSOLJ
TmzV471        990404.452  130p  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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