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[vsnet-obs 19220] New Takamizawa variable (TmzV224)

New Takamizawa variable (TmzV224)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV224).

TmzV224
= USNO1500.04107282 050842.512 +661600.72 (2000.0) 13.9 17.4
= IRAS05036+6612 050340.8 +661207 (1950.0)
    F12=0.76  F25=0.25  F60=0.40L F100=1.10L
    VAR=57 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
= 050840.7 +661557 (2000.0) FSC05036+6612 0.769 0.244 0.105L 0.882L
= 050842.0 +661600 (2000.0) IRAS05036+6612 0.781 0.260 0.400L 1.118L 57%
= 050842.0 +661600 (2000.0) SSC05036+6612 0.781 0.260 0.400L 1.118L

  Takamizawa's comment:

  The star may be a Mira-type variable  with  a range of 12.5-<14.7p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV224        950127.514  <145p  Tmz.VSOLJ
TmzV224        951128.592  <145p  Tmz.VSOLJ
TmzV224        971123.579  <140p  Tmz.VSOLJ
TmzV224        971221.472  147p  Tmz.VSOLJ
TmzV224        980116.455  145p  Tmz.VSOLJ
TmzV224        980820.715  <147p  Tmz.VSOLJ
TmzV224        980823.706  <147p  Tmz.VSOLJ
TmzV224        981024.551  <145p  Tmz.VSOLJ
TmzV224        981218.581  137p  Tmz.VSOLJ
TmzV224        990204.394  125p  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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