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[vsnet-newvar 659] New Takamizawa variable (TmzV768)

New Takamizawa variable (TmzV768)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV768).

TmzV768
= GSC6094.89 120106.53 -172501.6 (2000.0) 14.63 0
= USNO0675.08370758 120106.549 -172501.58 (2000.0) 13.8 17.5
= IRAS11585-1708 115831.9 -170813 (1950.0)
     F12=1.32  F25=0.58  F60=0.40L F100=1.00L
     VAR= 6 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
= 120105.3 -172453 (2000.0) FSC11585-1708 1.264 0.466 0.146L 0.510L
= 120105.5 -172454 (2000.0) IRAS11585-1708 1.290 0.562 0.400L 1.000L 6%
= 120105.5 -172454 (2000.0) SSC11585-1708 1.290 0.562 0.400L 1.000L

  Takamizawa's comment:

  The star may be a Mira-type variable with a range of 13.5-<15.4p.

Photographic magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag  code
TmzV768        19940310.551  144p  Tmz.VSOLJ
TmzV768        19941229.765  <153p  Tmz.VSOLJ
TmzV768        19950226.624  <153p  Tmz.VSOLJ
TmzV768        19951124.803  135p  Tmz.VSOLJ
TmzV768        19970212.710  154p  Tmz.VSOLJ
TmzV768        19970410.531  <154p  Tmz.VSOLJ
TmzV768        19990112.763  135p  Tmz.VSOLJ
TmzV768        19990208.667  138p  Tmz.VSOLJ
TmzV768        19991207.845  150p  Tmz.VSOLJ
TmzV768        20000108.808  148p  Tmz.VSOLJ
TmzV768        20000131.687  140p  Tmz.VSOLJ
TmzV768        20000310.651  147p  Tmz.VSOLJ
TmzV768        20001204.812  <153p  Tmz.VSOLJ

Observer's code:
  Tmz: K.Takamizawa (Saku-machi,Nagano,Japan)
       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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