[vsnet-newvar 1123] New Takamizawa variable (TmzV815)

[Taichi Kato <tkato>]

New Takamizawa variable (TmzV815)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV815).

TmzV815
= GSC5180.385 203414.55 -020714.7 (2000.0) 11.09 0
= GSC5180.385 203414.58 -020713.9 (2000.0) 11.65 0
= GSC5180.385 203414.59 -020714.7 (2000.0) 11.45 0
= USNO0825.18524331 203414.600 -020714.41 (2000.0) 10.6 12.0
= 2MASS 203414.568 -020714.16 (2000.0)  0.000  0.000  0.000
= IRAS20316-0217 203138.7 -021733 (1950.0)
     F12=1.90  F25=0.58  F60=0.40L F100=1.00L
     VAR= 5 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
= 203415.2 -020701 (2000.0) SD-02.5307 9.6
= 203411.4 -020728 (2000.0) DO6829
= 203414.1 -020713 (2000.0) FSC20316-0217 1.939 0.544 0.266L 1.246L
= 203414.4 -020712 (2000.0) IRAS20316-0217 1.924 0.547 0.400L 1.000L 5%
= 203414.4 -020712 (2000.0) SSC20316-0217 1.924 0.547 0.400L 1.000L
= 203414.5 -020713 (2000.0) 1067 1.11 TYC5180.385.1 plx=-199.7(49.5) (0.08 0.17)
= 203414.5 -020713 (2000.0) 1059 1.09 TYC2-5180.385.1 (10.70 0.06) (11.98 0.12)

  Takamizawa's comment:

  The star may be a semiregular variable  with a range of 10.3-10.9p.

Photographic magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag  code
TmzV815        19940413.778  105p  Tmz.VSOLJ
TmzV815        19940703.654  103p  Tmz.VSOLJ
TmzV815        19940803.576  108p  Tmz.VSOLJ
TmzV815        19940810.663  106p  Tmz.VSOLJ
TmzV815        19940930.528  107p  Tmz.VSOLJ
TmzV815        19941102.444  109p  Tmz.VSOLJ
TmzV815        19941127.412  107p  Tmz.VSOLJ
TmzV815        19950306.828  104p  Tmz.VSOLJ
TmzV815        19950311.834  108p  Tmz.VSOLJ
TmzV815        19950401.788  106p  Tmz.VSOLJ
TmzV815        19950723.647  106p  Tmz.VSOLJ
TmzV815        19951014.506  107p  Tmz.VSOLJ
TmzV815        19960815.567  108p  Tmz.VSOLJ
TmzV815        19961030.456  103p  Tmz.VSOLJ
TmzV815        19970309.826  105p  Tmz.VSOLJ
TmzV815        19970706.678  104p  Tmz.VSOLJ
TmzV815        19970901.582  106p  Tmz.VSOLJ
TmzV815        19971025.526  106p  Tmz.VSOLJ
TmzV815        19990708.663  103p  Tmz.VSOLJ
TmzV815        20000314.817  107p  Tmz.VSOLJ
TmzV815        20011013.451  105p  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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