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[vsnet-obs 19778] New Takamizawa variable (TmzV280)

New Takamizawa variable (TmzV280)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV280).

TmzV280
= USNO0750.02204506 062800.508 -105713.13 (2000.0) 11.2 17.9
= IRAS06256-1055 062540.0 -105517 (1950.0)
    F12=0.63  F25=0.25L F60=0.40L F100=7.58L
    VAR=-1 LRS=-1
 possibly I: oxygen-rich non-variable star without circumstellar shell
 or 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
= 062800.3 -105718 (2000.0) CS1283 - 11.2 - -
= 062800.8 -105714 (2000.0) IRAS06256-1055 0.651 0.250L 0.400L 7.338L -1%
= 062800.8 -105714 (2000.0) SSC06256-1055 0.651 0.250L 0.400L 7.338L
= 062801.7 -105714 (2000.0) FSC06256-1055 0.684 0.200 0.263L 3.659L

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 12.8-14.5p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV280        940331.481  141p  Tmz.VSOLJ
TmzV280        941127.608  144p  Tmz.VSOLJ
TmzV280        950203.519  145p  Tmz.VSOLJ
TmzV280        950219.442  138p  Tmz.VSOLJ
TmzV280        951021.750  143p  Tmz.VSOLJ
TmzV280        951219.605  143p  Tmz.VSOLJ
TmzV280        960111.501  138p  Tmz.VSOLJ
TmzV280        961206.602  137p  Tmz.VSOLJ
TmzV280        971103.759  138p  Tmz.VSOLJ
TmzV280        971221.572  128p  Tmz.VSOLJ
TmzV280        990206.492  135p  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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