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[vsnet-newvar 1122] New Takamizawa variable (TmzV814)

New Takamizawa variable (TmzV814)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV814).

TmzV814
= GSC5180.702 203451.61 -024254.6 (2000.0) 13.50 0
= GSC5180.702 203451.65 -024253.8 (2000.0) 13.67 0
= GSC5180.702 203451.68 -024255.1 (2000.0) 13.74 0
= USNO0825.18537581 203451.692 -024254.53 (2000.0) 11.3 14.1
= 2MASS 203451.672 -024254.36 (2000.0)  0.000  0.000  0.000
= 2MASS 203451.675 -024254.71 (2000.0)  5.697  0.000  0.000
= IRAS20322-0253 203215.8 -025315 (1950.0)
     F12=1.74  F25=0.58  F60=0.40L F100=1.10L
     VAR=60 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
= 203451.2 -024256 (2000.0) LMS522 M7 >13.5
= 203451.5 -024254 (2000.0) FSC20322-0253 1.680 0.675 0.182L 1.263L
= 203452.0 -024252 (2000.0) IRAS20322-0253 1.777 0.580 0.400L 1.056L 60%
= 203452.0 -024252 (2000.0) SSC20322-0253 1.777 0.580 0.400L 1.056L

  Takamizawa's comment:

  The star may be a semiregular variable  with a range of 12.6-13.6p.

Photographic magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag  code
TmzV814        19940413.778  136p  Tmz.VSOLJ
TmzV814        19940703.654  133p  Tmz.VSOLJ
TmzV814        19940803.576  132p  Tmz.VSOLJ
TmzV814        19940810.663  131p  Tmz.VSOLJ
TmzV814        19940930.528  131p  Tmz.VSOLJ
TmzV814        19941102.444  134p  Tmz.VSOLJ
TmzV814        19941127.412  133p  Tmz.VSOLJ
TmzV814        19950306.828  130p  Tmz.VSOLJ
TmzV814        19950311.834  132p  Tmz.VSOLJ
TmzV814        19950401.788  134p  Tmz.VSOLJ
TmzV814        19950723.647  135p  Tmz.VSOLJ
TmzV814        19951014.506  133p  Tmz.VSOLJ
TmzV814        19960815.567  131p  Tmz.VSOLJ
TmzV814        19961030.456  132p  Tmz.VSOLJ
TmzV814        19970309.826  128p  Tmz.VSOLJ
TmzV814        19970706.678  127p  Tmz.VSOLJ
TmzV814        19970901.582  127p  Tmz.VSOLJ
TmzV814        19971025.526  132p  Tmz.VSOLJ
TmzV814        19990708.663  130p  Tmz.VSOLJ
TmzV814        20000314.817  126p  Tmz.VSOLJ
TmzV814        20011013.451  130p  Tmz.VSOLJ

Observer's code:
  Tmz: K.Takamizawa (Saku-machi,Nagano,Japan)
       SASS (Saku All Sky Survey)
       Inst.: 10cmR F4 twin patrol cameras and 25cm F2.8
       Baker-Schmidt camera T-Max400 120
       Comparison stars mag.:GSC

Relayed from Kesao Takamizawa <k-takamizawa@nifty.ne.jp>

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