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[vsnet-newvar 1120] New Takamizawa variable (TmzV812)

New Takamizawa variable (TmzV812)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV812).

TmzV812
= GSC5189.2014 203835.60 -061056.6 (2000.0) 12.03 0
= USNO0825.18614812 203835.616 -061057.07 (2000.0) 10.6 12.6
= 2MASS 203835.616 -061056.64 (2000.0)  0.000  0.000  0.000
= IRAS20359-0621 203555.9 -062132 (1950.0)
     F12=1.20  F25=0.52  F60=0.40L F100=1.00L
     VAR= 4 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
= 203834.6 -061059 (2000.0) FSC20359-0621 1.090 0.487 0.164 0.603L
= 203835.2 -061057 (2000.0) IRAS20359-0621 1.152 0.507 0.400L 1.000L 4%
= 203835.2 -061057 (2000.0) SSC20359-0621 1.152 0.507 0.400L 1.000L
= 203835.5 -061057 (2000.0) 1153 1.49 TYC2-5189.2014.1 (11.68 0.10) (13.44 0.28)

  Takamizawa's comment:

  The star may be a semiregular variable  with a range of 11.0-11.6p.

Photographic magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag  code
TmzV812        19940413.778  110p  Tmz.VSOLJ
TmzV812        19940703.654  115p  Tmz.VSOLJ
TmzV812        19940803.576  111p  Tmz.VSOLJ
TmzV812        19940810.663  112p  Tmz.VSOLJ
TmzV812        19940930.528  116p  Tmz.VSOLJ
TmzV812        19941102.444  113p  Tmz.VSOLJ
TmzV812        19941127.412  112p  Tmz.VSOLJ
TmzV812        19950306.828  110p  Tmz.VSOLJ
TmzV812        19950311.834  111p  Tmz.VSOLJ
TmzV812        19950401.788  114p  Tmz.VSOLJ
TmzV812        19950723.647  111p  Tmz.VSOLJ
TmzV812        19951014.506  113p  Tmz.VSOLJ
TmzV812        19960815.567  115p  Tmz.VSOLJ
TmzV812        19961030.456  116p  Tmz.VSOLJ
TmzV812        19970309.826  110p  Tmz.VSOLJ
TmzV812        19970706.678  114p  Tmz.VSOLJ
TmzV812        19970901.582  112p  Tmz.VSOLJ
TmzV812        19971025.526  111p  Tmz.VSOLJ
TmzV812        19990708.663  113p  Tmz.VSOLJ
TmzV812        20000314.817  114p  Tmz.VSOLJ
TmzV812        20011013.451  116p  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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