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[vsnet-obs 23486] New Takamizawa variable (TmzV568)

New Takamizawa variable (TmzV568)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV568).

TmzV568
= GSC4274.480 215113.18 +661744.4 (2000.0) 12.23 1
= USNO1500.08551761 215113.192 +661744.36 (2000.0) 11.7 15.7 *
= IRAS21500+6603 215000.4 +660328 (1950.0)
    F12=0.48  F25=0.28  F60=0.44L F100=5.25L
    VAR=56 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
= 215113.1 +661734 (2000.0) IRAS21500+6603 0.499 0.265 0.435L 5.337L 56%
= 215113.1 +661734 (2000.0) SSC21500+6603 0.499 0.265 0.435L 5.337L

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 12.4-14.0p.

object         YYMMDD(UT)   mag  code
TmzV568        970827.540  124p  Tmz.VSOLJ
TmzV568        971218.437  126p  Tmz.VSOLJ
TmzV568        980823.563  130p  Tmz.VSOLJ
TmzV568        980916.530  126p  Tmz.VSOLJ
TmzV568        981107.440  129p  Tmz.VSOLJ
TmzV568        990709.574  140p  Tmz.VSOLJ
TmzV568        990807.594  124p  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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