[vsnet-newvar 1250] New Takamizawa variable (TmzV888)

[Taichi Kato <tkato>]

New Takamizawa variable (TmzV888)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV888).

TmzV888
= GSC4051.748 023440.23 +630003.8 (2000.0) 13.27 1
= USNO1500.02531357 023440.270 +630003.74 (2000.0) 12.2 16.1
= IRAS02307+6246 023046.0 +624656 (1950.0)
     F12=1.10  F25=0.58  F60=1.00L F100=9.12L
     VAR= 0 LRS=-1
  possibly IIIa: variable star with more evolved O-rich c.s. shell
  or VIb: variable star with relatively hot dust close to
       the star and relatively cold dust at large distance
       may be O-rich
  or VII: variable star with more evolved C-rich circumstellar shell
= 023440.3 +630003 (2000.0) IRAS02307+6246 1.073 0.593 1.011L 9.463L 0%
= 023440.3 +630003 (2000.0) SSC02307+6246 1.073 0.593 1.011L 9.463L
= 023440.6 +630003 (2000.0) MSX5C_G134.3422+02.4394 -33 -18 1 -3 1 4 V(%):-:-:2:-:0:-

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 12.6-13.6p.

Photographic magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag  code
TmzV888        19950127.432  130p  Tmz.VSOLJ
TmzV888        19960922.656  133p  Tmz.VSOLJ
TmzV888        19970613.737  128p  Tmz.VSOLJ
TmzV888        19980116.420  136p  Tmz.VSOLJ
TmzV888        19980629.693  129p  Tmz.VSOLJ
TmzV888        19991128.440  126p  Tmz.VSOLJ
TmzV888        20000902.687  135p  Tmz.VSOLJ
TmzV888        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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