[vsnet-newvar 1304] New Takamizawa variable (TmzV909)

[Taichi Kato <tkato>]

New Takamizawa variable (TmzV909)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV909).

TmzV909
= GSC4035.101 014238.24 +633632.1 (2000.0) 11.74 1
= GSC4035.101 014238.34 +633631.8 (2000.0) 11.81 1
= USNO1500.01755212 014238.329 +633632.24 (2000.0) 11.2 15.5
= IRAS01391+6321 013907.0 +632118 (1950.0)
     F12=1.20  F25=0.36  F60=0.44L F100=3.98L
     VAR= 6 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
= 014237.7 +633624 (2000.0) IRAS01391+6321 1.176 0.377 0.429L 4.123L 6%
= 014237.7 +633624 (2000.0) SSC01391+6321 1.176 0.377 0.429L 4.123L
= 014238.0 +633630 (2000.0) MSX5C_G128.5846+01.3002 -33 -17 2 2 -1 -5 V(%):-:-:1:-:-:-
= 014238.0 +633634 (2000.0) CS255 - 10.5 10.1 -
= 014242.0 +633600 (2000.0) C4,4(Buscombe) V=11.6 B-V=1.12 U-B=.92

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 11.5-12.4p.

Photographic magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag  code
TmzV909        19950127.432  124p  Tmz.VSOLJ
TmzV909        19960922.656  122p  Tmz.VSOLJ
TmzV909        19970613.737  115p  Tmz.VSOLJ
TmzV909        19980116.420  121p  Tmz.VSOLJ
TmzV909        19980629.693  119p  Tmz.VSOLJ
TmzV909        19991128.440  123p  Tmz.VSOLJ
TmzV909        20000902.687  117p  Tmz.VSOLJ
TmzV909        20011023.613  119p  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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