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[vsnet-obs 20186] New Takamizawa variable (TmzV335)

New Takamizawa variable (TmzV335)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV335).

TmzV335
= GSC7333.863 155633.52 -331824.2 (2000.0) 12.59 0
= GSC7333.863 155633.62 -331823.3 (2000.0) 13.42 0
= USNO0525.17454570 155633.538 -331824.35 (2000.0) 10.4 11.0
= IRAS15533-3309 155321.6 -330942 (1950.0)
    F12=1.44  F25=0.58  F60=0.40L F100=10.96L
    VAR=33 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
= 155633.1 -331838 (2000.0) CD-32.11262 10.0
= 155632.7 -331821 (2000.0) IRAS15533-3309 1.407 0.571 0.400L 11.060L 33%
= 155632.7 -331821 (2000.0) SSC15533-3309 1.407 0.571 0.400L 11.060L
= 155633.7 -331823 (2000.0) FSC15533-3309 1.263 0.442 0.449L 2.667L

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 12.0-12.9p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV335        940315.721  125p  Tmz.VSOLJ
TmzV335        940411.761  128p  Tmz.VSOLJ
TmzV335        940506.661  129p  Tmz.VSOLJ
TmzV335        940703.501  125p  Tmz.VSOLJ
TmzV335        960413.722  123p  Tmz.VSOLJ
TmzV335        960619.519  129p  Tmz.VSOLJ
TmzV335        980620.557  120p  Tmz.VSOLJ
TmzV335        990414.708  128p  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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