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[vsnet-newvar 1098] New Takamizawa variable (TmzV796)

New Takamizawa variable (TmzV796)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV796).

TmzV796
= GSC7520.443 232558.26 -353617.5 (2000.0) 11.28 0
= GSC7520.443 232558.29 -353616.9 (2000.0) 11.35 0
= USNO0525.36596520 232558.242 -353617.49 (2000.0) 99.9 10.6
= 2MASS 232558.344 -353617.64 (2000.0)  0.000  0.000  0.000
= IRAS23232-3552 232317.9 -355245 (1950.0)
     F12=1.44  F25=0.52  F60=0.40L F100=1.58L
     VAR= 3 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
= 232556.9 -353623 (2000.0) CD-36.15875 9.5
= 232558.4 -353617 (2000.0) CPD-36.9741 10.2
= 232558.6 -353615 (2000.0) FSC23232-3552 1.526 0.399 0.228L 0.549L
= 232558.9 -353614 (2000.0) IRAS23232-3552 1.454 0.507 0.400L 1.542L 3%
= 232558.9 -353614 (2000.0) SSC23232-3552 1.454 0.507 0.400L 1.542L
= 232558.3 -353617 (2000.0) 1026 1.39 TYC7520.443.1 plx=-73.1(35.3) (0.06 0.15)
= 232558.3 -353616 (2000.0) 1037 1.29 TYC2-7520.443.1 (10.51 0.05) (12.03 0.14)

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 10.2-10.9p.

Photographic magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag  code
TmzV796        19950921.583  105p  Tmz.VSOLJ
TmzV796        19951118.446  109p  Tmz.VSOLJ
TmzV796        19951118.449  109p  Tmz.VSOLJ
TmzV796        19960815.622  106p  Tmz.VSOLJ
TmzV796        19970928.548  102p  Tmz.VSOLJ
TmzV796        20001214.400  106p  Tmz.VSOLJ
TmzV796        20011011.539  102p  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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