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[vsnet-obs 19776] New Takamizawa variable (TmzV279)

New Takamizawa variable (TmzV279)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV279).

TmzV279
= USNO0750.01761700 060315.941 -100337.37 (2000.0) 13.9 18.0
= IRAS06009-1003 060054.0 -100328 (1950.0)
    F12=1.44  F25=0.48  F60=0.40L F100=6.31L
    VAR=27 LRS=-1
 possibly I: oxygen-rich non-variable star without 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
= 060315.8 -100337 (2000.0) IRAS06009-1003 1.400 0.458 0.400L 6.258L 27%
= 060315.8 -100337 (2000.0) SSC06009-1003 1.400 0.458 0.400L 6.258L
= 060315.9 -100337 (2000.0) FSC06009-1003 1.361 0.439 0.227L 2.838L

  Takamizawa's comment:

  The star may be a Mira-type variablea with a range of 12.8-<15.5p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV279        940331.481  150p  Tmz.VSOLJ
TmzV279        941127.608  136p  Tmz.VSOLJ
TmzV279        950203.519  <155p  Tmz.VSOLJ
TmzV279        950219.442  <155p  Tmz.VSOLJ
TmzV279        951021.750  153p  Tmz.VSOLJ
TmzV279        951219.605  <155p  Tmz.VSOLJ
TmzV279        960111.501  <155p  Tmz.VSOLJ
TmzV279        961206.602  150p  Tmz.VSOLJ
TmzV279        971103.759  133p  Tmz.VSOLJ
TmzV279        971221.572  128p  Tmz.VSOLJ
TmzV279        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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