[vsnet-obs 18769] New Takamizawa variable (TmzV144)

[Taichi Kato <tkato>]

New Takamizawa variable (TmzV144)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV144).

TmzV144
= GSC2402.333 051746.76 +365931.8 (2000.0) 12.23 1
= USNO1200.03137161 051746.752 +365932.05 (2000.0) 12.0 16.4
= IRAS05143+3656 051423.7 +365622 (1950.0)
    F12=1.32  F25=0.58  F60=0.40L F100=2.09L
    VAR=77 LRS=-1
 possibly 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
= 051746.7 +365932 (2000.0) IRAS05143+3656 1.373 0.556 0.400L 2.114L 77%
= 051746.7 +365932 (2000.0) SSC05143+3656 1.373 0.556 0.400L 2.114L

  Takamizawa's comment:

  The star may be a semiregular variable (SR) with a range of 12.5-13.6p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV144        940302.540  134p  Tmz.VSOLJ
TmzV144        940810.775  132p  Tmz.VSOLJ
TmzV144        941108.597  132p  Tmz.VSOLJ
TmzV144        941224.488  136p  Tmz.VSOLJ
TmzV144        950320.515  131p  Tmz.VSOLJ
TmzV144        950823.769  134p  Tmz.VSOLJ
TmzV144        951128.608  125p  Tmz.VSOLJ
TmzV144        960109.422  128p  Tmz.VSOLJ
TmzV144        960922.747  131p  Tmz.VSOLJ
TmzV144        961015.731  129p  Tmz.VSOLJ
TmzV144        961203.547  130p  Tmz.VSOLJ
TmzV144        970802.749  133p  Tmz.VSOLJ
TmzV144        971123.615  127p  Tmz.VSOLJ
TmzV144        980318.465  131p  Tmz.VSOLJ
TmzV144        980820.731  127p  Tmz.VSOLJ
TmzV144        981024.609  126p  Tmz.VSOLJ
TmzV144        981218.596  136p  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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