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[vsnet-obs 19067] New Takamizawa variable (TmzV200)

New Takamizawa variable (TmzV200)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV200).

TmzV200
= GSC3719.1372 042548.02 +525647.5 (2000.0) 12.22 1
= USNO1425.05264660 042548.074 +525647.46 (2000.0) 11.0 15.6
= IRAS04219+5249 042154.0 +524958 (1950.0)
    F12=1.58  F25=0.52  F60=0.40L F100=13.18L
    VAR=14 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
= 042547.8 +525648 (2000.0) CS680 - 11.5 9.2 -
= 042548.0 +525559 (2000.0) C(Buscombe) V=11.6 - -
= 042548.3 +525646 (2000.0) IRAS04218+5249 1.592 0.515 0.400L 13.070L 14%
= 042548.3 +525646 (2000.0) SSC04218+5249 1.592 0.515 0.400L 13.070L

  Takamizawa's comment:

  The star may be a semiregular variable (SR) with  a renge of 12.3-12.8p.
  Today is my birthday. I'm very happy!!

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV200        940910.701  128p  Tmz.VSOLJ
TmzV200        941108.549  126p  Tmz.VSOLJ
TmzV200        950823.720  125p  Tmz.VSOLJ
TmzV200        951127.554  127p  Tmz.VSOLJ
TmzV200        970714.728  124p  Tmz.VSOLJ
TmzV200        970802.707  127p  Tmz.VSOLJ
TmzV200        971010.696  123p  Tmz.VSOLJ
TmzV200        971123.526  125p  Tmz.VSOLJ
TmzV200        971221.456  125p  Tmz.VSOLJ
TmzV200        980820.706  127p  Tmz.VSOLJ
TmzV200        990109.498  125p  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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