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[vsnet-obs 19769] New Takamizawa variable (TmzV273)

New Takamizawa variable (TmzV273)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV273).

TmzV273
= GSC5377.2922 063427.00 -134145.3 (2000.0) 13.09 0
= USNO0750.02359395 063426.968 -134145.44 (2000.0) 12.5 16.1
= IRAS06321-1339 063209.5 -133921 (1950.0)
    F12=1.74  F25=0.76  F60=0.40L F100=1.00L
    VAR= 0 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
= 063427.1 -134146 (2000.0) IRAS06321-1339 1.769 0.776 0.400L 1.042L 0%
= 063427.1 -134146 (2000.0) SSC06321-1339 1.769 0.776 0.400L 1.042L

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 12.5-15.2p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV273        940331.481  132p  Tmz.VSOLJ
TmzV273        941127.608  147p  Tmz.VSOLJ
TmzV273        950203.519  132p  Tmz.VSOLJ
TmzV273        950219.442  134p  Tmz.VSOLJ
TmzV273        951021.750  138p  Tmz.VSOLJ
TmzV273        951219.605  125p  Tmz.VSOLJ
TmzV273        960111.501  136p  Tmz.VSOLJ
TmzV273        961206.602  137p  Tmz.VSOLJ
TmzV273        971103.759  140p  Tmz.VSOLJ
TmzV273        971221.572  152p  Tmz.VSOLJ
TmzV273        990206.492  <150p  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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