[vsnet-newvar 1246] New Takamizawa variable (TmzV884)

[Taichi Kato <tkato>]

New Takamizawa variable (TmzV884)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV884).

TmzV884
= GSC4059.241 024856.22 +670012.4 (2000.0) 13.56 1
= USNO1500.02743897 024856.186 +670012.34 (2000.0) 12.4 16.9
= IRAS02446+6647 024437.7 +664743 (1950.0)
     F12=1.58  F25=0.63  F60=0.40L F100=3.02L
     VAR= 5 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
= 024855.5 +670011 (2000.0) IRAS02446+6647 1.627 0.609 0.400L 2.960L 5%
= 024855.5 +670011 (2000.0) SSC02446+6647 1.627 0.609 0.400L 2.960L

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 12.6-13.9p.

Photographic magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag  code
TmzV884        19950127.432  131p  Tmz.VSOLJ
TmzV884        19960922.656  133p  Tmz.VSOLJ
TmzV884        19970613.737  127p  Tmz.VSOLJ
TmzV884        19980116.420  128p  Tmz.VSOLJ
TmzV884        19980629.693  127p  Tmz.VSOLJ
TmzV884        19991128.440  128p  Tmz.VSOLJ
TmzV884        20000902.687  139p  Tmz.VSOLJ
TmzV884        20011023.613  126p  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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