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[vsnet-obs 19061] New Takamizawa variable (TmzV197)

New Takamizawa variable (TmzV197)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV197).

TmzV197
= GSC3341.799 042650.19 +514602.6 (2000.0) 13.25 1
= USNO1350.04698562 042650.226 +514602.37 (2000.0) 11.7 17.7
= IRAS04229+5139 042259.3 +513917 (1950.0)
    F12=2.29  F25=0.69  F60=0.40L F100=13.18L
    VAR=25 LRS=-1
 possibly I: oxygen-rich non-variable star without 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
= 042650.4 +514600 (2000.0) IRAS04229+5139 2.218 0.692 0.400L 13.680L 25%
= 042650.4 +514600 (2000.0) SSC04229+5139 2.218 0.692 0.400L 13.680L
= 042653.9 +514500 (2000.0) C(Buscombe) V=11.5 - -

  Takamizawa's comment:

  The star may be a semiregular variable (SR) with  a renge of 12.7-13.8p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV197        940910.701  138p  Tmz.VSOLJ
TmzV197        941108.549  133p  Tmz.VSOLJ
TmzV197        950823.720  128p  Tmz.VSOLJ
TmzV197        951127.554  131p  Tmz.VSOLJ
TmzV197        970714.728  128p  Tmz.VSOLJ
TmzV197        970802.707  127p  Tmz.VSOLJ
TmzV197        971010.696  130p  Tmz.VSOLJ
TmzV197        971123.526  131p  Tmz.VSOLJ
TmzV197        971221.456  130p  Tmz.VSOLJ
TmzV197        980820.706  127p  Tmz.VSOLJ
TmzV197        990109.498  133p  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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