[vsnet-newvar 1315] New Takamizawa variable (TmzV921)

[Taichi Kato <tkato>]

New Takamizawa variable (TmzV921)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV921).

TmzV921
= GSC4297.1416 013258.50 +674854.1 (2000.0) 13.50 1
= GSC4297.1416 013258.56 +674853.1 (2000.0) 14.12 1
= USNO1575.00971344 013258.486 +674853.50 (2000.0) 13.3 17.3
= IRAS01293+6733 012921.9 +673330 (1950.0)
     F12=0.58  F25=0.19  F60=0.40L F100=2.29L
     VAR= 4 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
= 013258.6 +674853 (2000.0) IRAS01293+6733 0.561 0.189 0.400L 2.375L 4%
= 013258.6 +674853 (2000.0) SSC01293+6733 0.561 0.189 0.400L 2.375L

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 13.4-14.2p.

Photographic magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag  code
TmzV921        19950127.432  137p  Tmz.VSOLJ
TmzV921        19960922.656  135p  Tmz.VSOLJ
TmzV921        19970613.737  134p  Tmz.VSOLJ
TmzV921        19980116.420  136p  Tmz.VSOLJ
TmzV921        19980629.693  134p  Tmz.VSOLJ
TmzV921        19991128.440  135p  Tmz.VSOLJ
TmzV921        20000902.687  142p  Tmz.VSOLJ
TmzV921        20011023.613  136p  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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