[vsnet-newvar 1313] New Takamizawa variable (TmzV919)

[Taichi Kato <tkato>]

New Takamizawa variable (TmzV919)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV919).

TmzV919
= GSC4043.507 013036.70 +660859.1 (2000.0) 12.67 1 N
= USNO1500.01542607 013036.568 +660858.81 (2000.0) 12.5 16.8
= IRAS01270+6553 012704.7 +655323 (1950.0)
     F12=0.52  F25=0.25L F60=0.48L F100=13.18L
     VAR=-1 LRS=-1
  possibly I: oxygen-rich non-variable star without circumstellar shell
  or 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
= 013035.1 +660850 (2000.0) IRAS01270+6553 0.540 0.250L 0.501L 12.980L -1%
= 013035.1 +660850 (2000.0) SSC01270+6553 0.540 0.250L 0.501L 12.980L
= 013037.0 +660858 (2000.0) MSX5C_G126.8840+03.5791 -23 -12 1 -1 0 -2 V(%):-:-:1:-:-:-

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 12.5-13.3p.

Photographic magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag  code
TmzV919        19950127.432  133p  Tmz.VSOLJ
TmzV919        19960922.656  126p  Tmz.VSOLJ
TmzV919        19970613.737  128p  Tmz.VSOLJ
TmzV919        19980116.420  128p  Tmz.VSOLJ
TmzV919        19980629.693  125p  Tmz.VSOLJ
TmzV919        19991128.440  127p  Tmz.VSOLJ
TmzV919        20000902.687  128p  Tmz.VSOLJ
TmzV919        20011023.613  131p  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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