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[vsnet-obs 19822] New Takamizawa variable (TmzV293)

New Takamizawa variable (TmzV293)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV293).

TmzV293
= USNO0900.05412167 074551.310 +005538.55 (2000.0) 12.3 16.3
= IRAS07432+0103 074316.9 +010302 (1950.0)
    F12=2.29  F25=1.58  F60=0.40L F100=3.63L
    VAR=99 LRS=-1
 possibly IIIa: variable star with more evolved O-rich c.s. shell
= 074550.8 +005540 (2000.0) FSC07432+0103 2.866 1.527 0.180 1.235L
= 074551.6 +005540 (2000.0) IRAS07432+0103 2.234 1.582 0.400L 3.789L 99%
= 074551.6 +005540 (2000.0) SSC07432+0103 2.234 1.582 0.400L 3.789L

  Takamizawa's comment:

  The star may be a Mira-type variable with a range of 13.1-<15.3p.
  The star is visible at mag 18.5 on Real-Sky CD.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV293        940306.451  <153p  Tmz.VSOLJ
TmzV293        941111.747  131p  Tmz.VSOLJ
TmzV293        950220.486  153p  Tmz.VSOLJ
TmzV293        951025.748  <153p  Tmz.VSOLJ
TmzV293        951219.605  152p  Tmz.VSOLJ
TmzV293        961021.785  <150p  Tmz.VSOLJ
TmzV293        961206.691  <153p  Tmz.VSOLJ
TmzV293        971103.787  <153p  Tmz.VSOLJ
TmzV293        971204.711  <153p  Tmz.VSOLJ
TmzV293        971224.649  <153p  Tmz.VSOLJ
TmzV293        980121.564  <153p  Tmz.VSOLJ
TmzV293        980217.513  146p  Tmz.VSOLJ
TmzV293        980325.469  147p  Tmz.VSOLJ
TmzV293        980919.769  <153p  Tmz.VSOLJ
TmzV293        981115.752  <153p  Tmz.VSOLJ
TmzV293        981212.644  <153p  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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