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[vsnet-newvar 241] New Takamizawa variable (TmzV693)

New Takamizawa variable (TmzV693)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV693).

TmzV693
= GSC3976.447 215735.99 +573541.7 (2000.0) 11.65 6
= GSC3976.447 215736.03 +573540.6 (2000.0) 11.38 1
= USNO1425.12709441 215735.992 +573541.40 (2000.0) 99.9 14.3
= IRAS21559+5721 215556.4 +572119 (1950.0)
    F12=0.76  F25=0.17  F60=0.69L F100=19.05L
    VAR= 0 LRS=-1
 possibly I: oxygen-rich non-variable star without circumstellar shell
 or VIa: non-variable star with relatively cold dust at large
      distance, may be carbon-rich
= 215736.4 +573539 (2000.0) IRAS21559+5721 0.768 0.177 0.682L 19.870L 0%
= 215736.4 +573539 (2000.0) SSC21559+5721 0.768 0.177 0.682L 19.870L

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 11.4-11.9p.

object         YYYYMMDD(UT)   mag  code
TmzV693        19940903.562  117p  Tmz.VSOLJ
TmzV693        19970824.567  117p  Tmz.VSOLJ
TmzV693        19970827.540  119p  Tmz.VSOLJ
TmzV693        19971218.437  114p  Tmz.VSOLJ
TmzV693        19980823.562  117p  Tmz.VSOLJ
TmzV693        19980916.530  118p  Tmz.VSOLJ
TmzV693        19990709.574  119p  Tmz.VSOLJ
TmzV693        19990807.594  119p  Tmz.VSOLJ
TmzV693        19991226.462  117p  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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