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[vsnet-obs 19223] New Takamizawa variable (TmzV227)

New Takamizawa variable (TmzV227)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV227).

TmzV227
= GSC4088.601 051946.07 +642602.3 (2000.0) 13.74 1
= USNO1500.04193413 051946.079 +642602.40 (2000.0) 11.3 14.7
= IRAS05148+6422 051450.0 +642252 (1950.0)
    F12=0.83  F25=0.25  F60=0.40L F100=1.20L
    VAR= 0 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
= 051940.7 +642557 (2000.0) IRAS05148+6422 0.817 0.254 0.400L 1.148L 0%
= 051940.7 +642557 (2000.0) SSC05148+6422 0.817 0.254 0.400L 1.148L
= 051944.1 +642600 (2000.0) FSC05148+6422 0.824 0.249 0.195L 1.667L

  Takamizawa's comment:

  The star may be a Mira-type variable  with  a range of 12.0-<14.5p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV227        950127.514  128p  Tmz.VSOLJ
TmzV227        951128.592  125p  Tmz.VSOLJ
TmzV227        971123.579  <145p  Tmz.VSOLJ
TmzV227        971203.717  <145p  Tmz.VSOLJ
TmzV227        971221.501  <145p  Tmz.VSOLJ
TmzV227        980302.431  126p  Tmz.VSOLJ
TmzV227        980318.438  122p  Tmz.VSOLJ
TmzV227        980820.715  <145p  Tmz.VSOLJ
TmzV227        981024.645  138p  Tmz.VSOLJ
TmzV227        981218.581  124p  Tmz.VSOLJ
TmzV227        990111.539  123p  Tmz.VSOLJ
TmzV227        990204.394  120p  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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