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[vsnet-obs 19089] New Takamizawa variable (TmzV207)

New Takamizawa variable (TmzV207)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV207).

TmzV207
= GSC3328.65 041808.28 +451651.6 (2000.0) 12.20 1
= GSC3328.65 041808.31 +451652.6 (2000.0) 13.02 1
= USNO1350.04541243 041808.271 +451651.91 (2000.0) 12.3 16.2
= IRAS04145+4509 041433.9 +450935 (1950.0)
    F12=0.58  F25=0.28L F60=0.40L F100=1.90L
    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
= 041808.1 +451652 (2000.0) IRAS04145+4509 0.566 0.282L 0.400L 1.848L -1%
= 041808.1 +451652 (2000.0) SSC04145+4509 0.566 0.282L 0.400L 1.848L

The identity with the following NSV star should be checked.
041801.1 +451418 (2000.0) NSV01542 LB: 15 (15.5 P A0

  Takamizawa's comment:

  The star may be a semiregular variable  with  a renge of 12.2-13.0p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV207        940910.704  127p  Tmz.VSOLJ
TmzV207        941108.558  125p  Tmz.VSOLJ
TmzV207        941223.461  130p  Tmz.VSOLJ
TmzV207        950320.485  128p  Tmz.VSOLJ
TmzV207        950823.720  127p  Tmz.VSOLJ
TmzV207        951127.554  130p  Tmz.VSOLJ
TmzV207        961229.422  125p  Tmz.VSOLJ
TmzV207        970714.728  128p  Tmz.VSOLJ
TmzV207        970802.707  122p  Tmz.VSOLJ
TmzV207        971010.688  126p  Tmz.VSOLJ
TmzV207        971123.526  127p  Tmz.VSOLJ
TmzV207        971221.456  123p  Tmz.VSOLJ
TmzV207        980820.706  127p  Tmz.VSOLJ
TmzV207        990109.498  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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