[vsnet-obs 19792] New Takamizawa variable (TmzV289)

[Taichi Kato <tkato>]

New Takamizawa variable (TmzV289)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV289).

TmzV289
= GSC191.520 074000.72 +055923.0 (2000.0) 12.16 6
= USNO0900.05293618 074000.729 +055922.79 (2000.0) 11.3 14.3
= IRAS07373+0606 073720.4 +060624 (1950.0)
    F12=1.00  F25=0.48  F60=0.40L F100=1.00L
    VAR=17 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
= 074000.5 +055925 (2000.0) IRAS07373+0606 1.029 0.492 0.400L 1.000L 17%
= 074000.5 +055925 (2000.0) SSC07373+0606 1.029 0.492 0.400L 1.000L
= 074001.1 +055922 (2000.0) FSC07373+0606 1.020 0.439 0.157 0.546L

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 11.7-12.9p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV289        940306.451  117p  Tmz.VSOLJ
TmzV289        941111.747  121p  Tmz.VSOLJ
TmzV289        950220.486  121p  Tmz.VSOLJ
TmzV289        951025.748  122p  Tmz.VSOLJ
TmzV289        951219.605  125p  Tmz.VSOLJ
TmzV289        961021.785  127p  Tmz.VSOLJ
TmzV289        961206.691  121p  Tmz.VSOLJ
TmzV289        971103.787  120p  Tmz.VSOLJ
TmzV289        971204.711  128p  Tmz.VSOLJ
TmzV289        971224.649  123p  Tmz.VSOLJ
TmzV289        980121.564  121p  Tmz.VSOLJ
TmzV289        980217.513  125p  Tmz.VSOLJ
TmzV289        980325.469  120p  Tmz.VSOLJ
TmzV289        980919.769  123p  Tmz.VSOLJ
TmzV289        981115.752  128p  Tmz.VSOLJ
TmzV289        981212.644  129p  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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