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[vsnet-obs 19420] New Takamizawa variable (TmzV244)

New Takamizawa variable (TmzV244)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV244).

TmzV244
= USNO1425.06376398 055149.458 +542140.85 (2000.0) 11.6 14.6
= IRAS05477+5420 054744.9 +542059 (1950.0)
    F12=0.52  F25=0.25L F60=0.40L F100=1.44L
    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
= 055147.1 +542138 (2000.0) FSC05476+5420 0.459 0.161 0.160L 0.947L
= 055151.6 +542143 (2000.0) IRAS05477+5420 0.509 0.250L 0.400L 1.473L -1%
= 055151.6 +542143 (2000.0) SSC05477+5420 0.509 0.250L 0.400L 1.473L

  Takamizawa's comment:

  The star may be a semiregular variable  with  a range of 13.0-13.9p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV244        950127.530  137p  Tmz.VSOLJ
TmzV244        950203.476  132p  Tmz.VSOLJ
TmzV244        951217.537  132p  Tmz.VSOLJ
TmzV244        951219.564  134p  Tmz.VSOLJ
TmzV244        961015.749  137p  Tmz.VSOLJ
TmzV244        970811.728  138p  Tmz.VSOLJ
TmzV244        971109.675  130p  Tmz.VSOLJ
TmzV244        971124.546  131p  Tmz.VSOLJ
TmzV244        971221.508  136p  Tmz.VSOLJ
TmzV244        980119.463  138p  Tmz.VSOLJ
TmzV244        980302.440  132p  Tmz.VSOLJ
TmzV244        980916.721  139p  Tmz.VSOLJ
TmzV244        981024.647  137p  Tmz.VSOLJ
TmzV244        981218.631  132p  Tmz.VSOLJ
TmzV244        990111.547  133p  Tmz.VSOLJ
TmzV244        990204.446  130p  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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