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[vsnet-newvar 200] New Takamizawa variable (TmzV658)

New Takamizawa variable (TmzV658)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV658).

TmzV658
= GSC3981.553 220106.68 +582540.4 (2000.0) 12.46 6 N
= USNO1425.12796935 220106.557 +582540.93 (2000.0) 11.7 14.9
= IRAS21594+5811 215927.5 +581110 (1950.0)
    F12=0.52  F25=0.30  F60=0.48L F100=33.10L
    VAR= 3 LRS=-1
 possibly IIIa: variable star with more evolved O-rich c.s. shell
 or VIb: variable star with relatively hot dust close to
      the star and relatively cold dust at large distance
      may be O-rich
 or VII: variable star with more evolved C-rich circumstellar shell
= 220107.2 +582538 (2000.0) IRAS21594+5811 0.535 0.305 0.476L 33.080L 3%
= 220107.2 +582538 (2000.0) SSC21594+5811 0.535 0.305 0.476L 33.080L

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 12.7-13.3p.

object         YYYYMMDD(UT)   mag  code
TmzV658        19940903.562  129p  Tmz.VSOLJ
TmzV658        19970824.567  127p  Tmz.VSOLJ
TmzV658        19970827.540  127p  Tmz.VSOLJ
TmzV658        19971218.437  133p  Tmz.VSOLJ
TmzV658        19980823.562  130p  Tmz.VSOLJ
TmzV658        19980916.530  127p  Tmz.VSOLJ
TmzV658        19990709.574  130p  Tmz.VSOLJ
TmzV658        19990807.594  131p  Tmz.VSOLJ
TmzV658        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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