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[vsnet-newvar 231] New Takamizawa variable (TmzV683)

New Takamizawa variable (TmzV683)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV683).

TmzV683
= GSC3994.1403 222550.10 +582331.9 (2000.0) 12.83 6 N
= GSC3994.1403 222550.29 +582331.4 (2000.0) 12.43 6
= USNO1425.13532593 222550.070 +582332.07 (2000.0) 12.0 16.0
= IRAS22240+5808 222400.5 +580818 (1950.0)
    F12=0.52  F25=0.25  F60=3.63L F100=36.30L
    VAR=11 LRS=-1
 possibly 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
= 222550.6 +582335 (2000.0) IRAS22240+5808 0.517 0.246 3.538L 36.670L 11%
= 222550.6 +582335 (2000.0) SSC22240+5808 0.517 0.246 3.538L 36.670L

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 12.8-13.5p.

object         YYYYMMDD(UT)   mag  code
TmzV683        19940903.562  131p  Tmz.VSOLJ
TmzV683        19970824.567  130p  Tmz.VSOLJ
TmzV683        19970827.540  129p  Tmz.VSOLJ
TmzV683        19971218.437  128p  Tmz.VSOLJ
TmzV683        19980823.562  131p  Tmz.VSOLJ
TmzV683        19980916.530  135p  Tmz.VSOLJ
TmzV683        19990709.574  135p  Tmz.VSOLJ
TmzV683        19990807.594  130p  Tmz.VSOLJ
TmzV683        19991226.462  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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