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[vsnet-newvar 1280] New Takamizawa variable (TmzV894)

New Takamizawa variable (TmzV894)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV894).

TmzV894
= GSC4058.821 022911.66 +665233.7 (2000.0) 13.42 1
= USNO1500.02458281 022911.678 +665233.91 (2000.0) 11.6 16.4
= IRAS02250+6639 022505.9 +663918 (1950.0)
     F12=1.32  F25=0.44  F60=0.52L F100=3.98L
     VAR=14 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
= 022912.7 +665240 (2000.0) IRAS02250+6639 1.306 0.444 0.530L 4.088L 14%
= 022912.7 +665240 (2000.0) SSC02250+6639 1.306 0.444 0.530L 4.088L

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 13.0-14.1p.

Photographic magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag  code
TmzV894        19950127.432  130p  Tmz.VSOLJ
TmzV894        19960922.656  137p  Tmz.VSOLJ
TmzV894        19970613.737  141p  Tmz.VSOLJ
TmzV894        19980116.420  138p  Tmz.VSOLJ
TmzV894        19980629.693  135p  Tmz.VSOLJ
TmzV894        19991128.440  136p  Tmz.VSOLJ
TmzV894        20000902.687  136p  Tmz.VSOLJ
TmzV894        20011023.613  132p  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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