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[vsnet-newvar 237] New Takamizawa variable (TmzV689)

New Takamizawa variable (TmzV689)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV689).

TmzV689
= GSC4264.878 221747.40 +600652.2 (2000.0) 10.99 6
= USNO1500.09062406 221747.376 +600652.13 (2000.0)  9.7 14.6
= IRAS22160+5951 221604.4 +595147 (1950.0)
    F12=0.83  F25=0.17  F60=2.51L F100=27.53L
    VAR= 1 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
= 221747.8 +600649 (2000.0) IRAS22160+5951 0.845 0.184 2.537L 28.720L 1%
= 221747.8 +600649 (2000.0) SSC22160+5951 0.845 0.184 2.537L 28.720L
= 221747.4 +600651 (2000.0) 1114 1.73 TYC2-4264.878.1 (11.33 0.08) (13.37 0.32)
= 221756.7 +600702 (2000.0) DO41121

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 11.0-11.4p.

object         YYYYMMDD(UT)   mag  code
TmzV689        19940903.562  111p  Tmz.VSOLJ
TmzV689        19970824.567  114p  Tmz.VSOLJ
TmzV689        19970827.540  112p  Tmz.VSOLJ
TmzV689        19971218.437  114p  Tmz.VSOLJ
TmzV689        19980823.562  110p  Tmz.VSOLJ
TmzV689        19980916.530  112p  Tmz.VSOLJ
TmzV689        19990709.574  111p  Tmz.VSOLJ
TmzV689        19990807.594  111p  Tmz.VSOLJ
TmzV689        19991226.462  113p  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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