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[vsnet-newvar 677] New Takamizawa variable (TmzV780)

New Takamizawa variable (TmzV780)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV780).

TmzV780
= GSC1753.1577 010730.07 +292613.7 (2000.0) 10.97 1
= USNO1125.00389919 010730.092 +292613.98 (2000.0) 10.6 12.3
= 2MASS 010730.072 +292613.92 (2000.0)  0.000  0.000  0.000
= 2MASS 010730.072 +292613.92 (2000.0)  0.000  0.000  0.000
= 2MASS 010730.128 +292613.80 (2000.0)  5.956  0.000  4.749
= 2MASS 010730.128 +292613.80 (2000.0)  5.956  0.000  4.749
= IRAS01047+2910 010445.6 +291011 (1950.0)
     F12=0.69  F25=0.21  F60=0.40L F100=1.00L
     VAR= 9 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
= 010728.6 +292605 (2000.0) FSC01047+2910 0.650 0.199 0.136L 0.715L
= 010729.9 +292611 (2000.0) IRAS01047+2910 0.672 0.197 0.400L 1.000L 9%
= 010729.9 +292611 (2000.0) SSC01047+2910 0.672 0.197 0.400L 1.000L
= 010730.0 +292612 (2000.0) 1145 0.81 TYC2-1753.1577.1 (11.53 0.10) (12.49 0.19)
= 010728.0 +292504 (2000.0) DO8658 

  Takamizawa's comment:

  The star may be a semiregular variable  with a range of 10.8-11.6p.

Photographic magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag  code
TmzV780        19940506.743  112p  Tmz.VSOLJ
TmzV780        19940814.660  114p  Tmz.VSOLJ
TmzV780        19941102.591  111p  Tmz.VSOLJ
TmzV780        19941223.404  109p  Tmz.VSOLJ
TmzV780        19950120.460  116p  Tmz.VSOLJ
TmzV780        19950917.551  111p  Tmz.VSOLJ
TmzV780        19970517.744  110p  Tmz.VSOLJ
TmzV780        19970606.721  110p  Tmz.VSOLJ
TmzV780        19970613.719  112p  Tmz.VSOLJ
TmzV780        19980703.715  108p  Tmz.VSOLJ
TmzV780        20001216.422  114p  Tmz.VSOLJ

Observer's code:
  Tmz: K.Takamizawa (Saku-machi,Nagano,Japan)
       SASS (Saku All Sky Survey)
       Inst.: 10cmR F4 twin patrol cameras  T-Max400 120
       Comparison stars mag.:GSC

Relayed from Kesao Takamizawa <GHA07243@nifty.ne.jp>

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