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[vsnet-newvar 1130] New Takamizawa variable (TmzV819)

New Takamizawa variable (TmzV819)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV819).

TmzV819
= GSC5179.1984 205556.10 -012114.1 (2000.0) 12.42 0
= USNO0825.18921005 205556.093 -012114.12 (2000.0) 10.0 12.6
= 2MASS 205556.112 -012114.04 (2000.0)  0.000  0.000  0.000
= IRAS20533-0132 205321.2 -013247 (1950.0)
     F12=1.90  F25=0.63  F60=0.48L F100=1.00L
     VAR= 0 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
= 205556.1 -012115 (2000.0) IRAS20533-0132 1.857 0.661 0.501L 1.000L 0%
= 205556.1 -012115 (2000.0) SSC20533-0132 1.857 0.661 0.501L 1.000L
= 205556.1 -012113 (2000.0) 1120 2.17 TYC2-5179.1984.1 (11.44 0.10) (13.99 0.49)
= 205554.8 -012119 (2000.0) FSC20533-0132 1.878 0.614 0.228 1.495L

  Takamizawa's comment:

  The star may be a semiregular variable  with a range of 11.5-12.5p.

Photographic magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag  code
TmzV819        19940413.778  118p  Tmz.VSOLJ
TmzV819        19940703.654  119p  Tmz.VSOLJ
TmzV819        19940803.576  117p  Tmz.VSOLJ
TmzV819        19940810.663  118p  Tmz.VSOLJ
TmzV819        19940930.528  119p  Tmz.VSOLJ
TmzV819        19941102.444  120p  Tmz.VSOLJ
TmzV819        19941127.412  120p  Tmz.VSOLJ
TmzV819        19950306.828  122p  Tmz.VSOLJ
TmzV819        19950311.834  123p  Tmz.VSOLJ
TmzV819        19950401.788  122p  Tmz.VSOLJ
TmzV819        19950723.647  118p  Tmz.VSOLJ
TmzV819        19951014.506  119p  Tmz.VSOLJ
TmzV819        19960815.567  125p  Tmz.VSOLJ
TmzV819        19961030.456  123p  Tmz.VSOLJ
TmzV819        19970309.826  121p  Tmz.VSOLJ
TmzV819        19970706.678  115p  Tmz.VSOLJ
TmzV819        19970901.582  115p  Tmz.VSOLJ
TmzV819        19971025.526  116p  Tmz.VSOLJ
TmzV819        19990708.663  116p  Tmz.VSOLJ
TmzV819        20000314.817  115p  Tmz.VSOLJ
TmzV819        20011013.451  120p  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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