[vsnet-newvar 1104] New Takamizawa variable (TmzV801)

[Taichi Kato <tkato>]

New Takamizawa variable (TmzV801)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV801).

TmzV801
= GSC7980.798 213906.33 -391044.6 (2000.0) 11.43 0
= USNO0450.39986366 213906.334 -391044.77 (2000.0)  9.1 11.0
= IRAS21360-3924 213600.2 -392421 (1950.0)
     F12=3.31  F25=0.91  F60=0.40L F100=1.00L
     VAR= 5 LRS=-1
  possibly I: oxygen-rich non-variable star without circumstellar shell
  or VIa: non-variable star with relatively cold dust at large
       distance, may be carbon-rich
= 213905.6 -391036 (2000.0) CD-39.14358 9.5
= 213906.6 -391042 (2000.0) CPD-39.8996 10.3
= 213905.3 -391048 (2000.0) FSC21359-3924 3.327 0.906 0.184 0.380L
= 213905.7 -391046 (2000.0) IRAS21360-3924 3.348 0.917 0.400L 1.000L 5%
= 213905.7 -391046 (2000.0) SSC21360-3924 3.348 0.917 0.400L 1.000L
= 213906.3 -391044 (2000.0) 1059 1.35 TYC7980.798.1 plx=3.9(35.4) (0.06 0.16)
= 213906.3 -391044 (2000.0) 1044 1.56 TYC2-7980.798.1 (10.61 0.04) (12.45 0.16)

  Takamizawa's comment:

  The star may be a semiregular variable  with a range of 9.9-10.6p.

Photographic magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag  code
TmzV801        19940810.672  106p  Tmz.VSOLJ
TmzV801        19950921.526  105p  Tmz.VSOLJ
TmzV801        19951025.428  105p  Tmz.VSOLJ
TmzV801        19960721.671  104p  Tmz.VSOLJ
TmzV801        19960815.601  104p  Tmz.VSOLJ
TmzV801        19970828.609   99p  Tmz.VSOLJ
TmzV801        19970828.613   99p  Tmz.VSOLJ
TmzV801        20011011.562  101p  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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