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[vsnet-obs 24160] New Takamizawa variable (TmzV612)

New Takamizawa variable (TmzV612)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV612).

TmzV612
= GSC3978.530 213043.82 +584648.1 (2000.0) 11.82 1 N
= USNO1425.12080952 213043.830 +584647.95 (2000.0) 11.0 14.9 *
= IRAS21292+5833 212917.0 +583330 (1950.0)
    F12=0.69  F25=0.30L F60=3.31L F100=57.53L
    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
= 213043.8 +584644 (2000.0) IRAS21292+5833 0.713 0.286L 3.293L 55.530L -1%
= 213043.8 +584644 (2000.0) SSC21292+5833 0.713 0.286L 3.293L 55.530L
= 213059.8 +584627 (2000.0) DO39719

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 12.0-12.6p.

object         YYMMDD(UT)   mag  code
TmzV612        940903.562  125p  Tmz.VSOLJ
TmzV612        970824.567  126p  Tmz.VSOLJ
TmzV612        970827.540  124p  Tmz.VSOLJ
TmzV612        971218.437  125p  Tmz.VSOLJ
TmzV612        980823.562  122p  Tmz.VSOLJ
TmzV612        980916.530  120p  Tmz.VSOLJ
TmzV612        990709.574  120p  Tmz.VSOLJ
TmzV612        990807.594  124p  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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