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[vsnet-newvar 1283] New Takamizawa variable (TmzV897)

New Takamizawa variable (TmzV897)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV897).

TmzV897
= GSC4041.89 021235.19 +653110.8 (2000.0) 13.45 1
= USNO1500.02240289 021235.196 +653110.55 (2000.0) 12.0 16.8
= IRAS02087+6517 020843.6 +651710 (1950.0)
     F12=1.00  F25=0.36  F60=0.48L F100=17.37L
     VAR= 0 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
= 021236.0 +653113 (2000.0) IRAS02087+6517 0.987 0.348 0.471L 17.960L 0%
= 021236.0 +653113 (2000.0) SSC02087+6517 0.987 0.348 0.471L 17.960L

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 13.0-13.7p.

Photographic magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag  code
TmzV897        19950127.432  131p  Tmz.VSOLJ
TmzV897        19960922.656  137p  Tmz.VSOLJ
TmzV897        19970613.737  134p  Tmz.VSOLJ
TmzV897        19980116.420  135p  Tmz.VSOLJ
TmzV897        19980629.693  133p  Tmz.VSOLJ
TmzV897        19991128.440  132p  Tmz.VSOLJ
TmzV897        20000902.687  132p  Tmz.VSOLJ
TmzV897        20011023.613  130p  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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