[vsnet-newvar 202] New Takamizawa variable (TmzV660)

[Taichi Kato <tkato>]

New Takamizawa variable (TmzV660)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV660).

TmzV660
= GSC3981.1254 220343.60 +590227.1 (2000.0) 12.54 6
= USNO1425.12867244 220343.604 +590226.91 (2000.0) 12.3 16.3
= IRAS22020+5847 220204.5 +584754 (1950.0)
    F12=1.00  F25=0.44  F60=0.58L F100=25.11L
    VAR=58 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
= 220343.9 +590228 (2000.0) IRAS22020+5847 1.028 0.427 0.571L 24.330L 58%
= 220343.9 +590228 (2000.0) SSC22020+5847 1.028 0.427 0.571L 24.330L

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 12.4-12.8p.

object         YYYYMMDD(UT)   mag  code
TmzV660        19940903.562  128p  Tmz.VSOLJ
TmzV660        19970824.567  125p  Tmz.VSOLJ
TmzV660        19970827.540  124p  Tmz.VSOLJ
TmzV660        19971218.437  124p  Tmz.VSOLJ
TmzV660        19980823.562  127p  Tmz.VSOLJ
TmzV660        19980916.530  125p  Tmz.VSOLJ
TmzV660        19990709.574  128p  Tmz.VSOLJ
TmzV660        19990807.594  125p  Tmz.VSOLJ
TmzV660        19991226.462  127p  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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