[vsnet-obs 19082] New Takamizawa variable (TmzV204)

[Taichi Kato <tkato>]

New Takamizawa variable (TmzV204)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV204).

TmzV204
= GSC2890.166 041413.79 +435452.1 (2000.0) 12.35 1
= USNO1275.03101415 041413.784 +435451.73 (2000.0) 11.9 16.5
= IRAS04107+4347 041042.5 +434716 (1950.0)
    F12=0.63  F25=0.30L F60=0.40L F100=2.29L
    VAR=-1 LRS=-1
 possibly I: oxygen-rich non-variable star without circumstellar shell
 or 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
= 041413.4 +435449 (2000.0) IRAS04107+4347 0.646 0.314L 0.400L 2.281L -1%
= 041413.4 +435449 (2000.0) SSC04107+4347 0.646 0.314L 0.400L 2.281L
= 041413.7 +435452 (2000.0) CS633 - - 10.2 -

  Takamizawa's comment:

  The star may be a semiregular variable  with  a renge of 12.1-13.2p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV204        940910.704  126p  Tmz.VSOLJ
TmzV204        941108.558  131p  Tmz.VSOLJ
TmzV204        941223.461  127p  Tmz.VSOLJ
TmzV204        950320.485  125p  Tmz.VSOLJ
TmzV204        950823.720  131p  Tmz.VSOLJ
TmzV204        951127.554  132p  Tmz.VSOLJ
TmzV204        961229.422  129p  Tmz.VSOLJ
TmzV204        970714.728  127p  Tmz.VSOLJ
TmzV204        970802.707  121p  Tmz.VSOLJ
TmzV204        971010.688  126p  Tmz.VSOLJ
TmzV204        971123.526  132p  Tmz.VSOLJ
TmzV204        971221.456  132p  Tmz.VSOLJ
TmzV204        980820.706  128p  Tmz.VSOLJ
TmzV204        990109.498  128p  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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