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[vsnet-obs 18921] New Takamizawa variable (TmzV171)

New Takamizawa variable (TmzV171)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV171).

TmzV171
= GSC3723.1031 042446.60 +555542.6 (2000.0) 12.49 1
= USNO1425.05248493 042446.604 +555542.54 (2000.0) 11.7 20.6
= IRAS04207+5548 042042.9 +554849 (1950.0)
    F12=4.78  F25=1.44  F60=0.44  F100=2.29L
    VAR=82 LRS=-1
    VII: variable star with more evolved C-rich circumstellar shell
= 042446.4 +555541 (2000.0) IRAS04207+5548 4.810 1.394 0.436 2.247L 82%
= 042446.4 +555541 (2000.0) SSC04207+5548 4.810 1.394 0.436 2.247L
= 042446.5 +555542 (2000.0) CS674 - 11.5: 10.4 -
= 042448.0 +555459 (2000.0) C(Buscombe) V=11.2 - -

  Takamizawa's comment:

  The star may be a semiregular variable (SR) with a range of 11.8-13.4p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV171        941108.549  120p  Tmz.VSOLJ
TmzV171        941224.463  118p  Tmz.VSOLJ
TmzV171        950127.497  118p  Tmz.VSOLJ
TmzV171        950127.506  118p  Tmz.VSOLJ
TmzV171        970802.715  134p  Tmz.VSOLJ
TmzV171        971010.696  132p  Tmz.VSOLJ
TmzV171        971010.738  131p  Tmz.VSOLJ
TmzV171        971123.518  124p  Tmz.VSOLJ
TmzV171        971221.472  123p  Tmz.VSOLJ
TmzV171        980116.455  121p  Tmz.VSOLJ
TmzV171        980820.699  133p  Tmz.VSOLJ
TmzV171        980823.706  135p  Tmz.VSOLJ
TmzV171        981024.551  125p  Tmz.VSOLJ
TmzV171        990109.489  118p  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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