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[vsnet-obs 18928] New Takamizawa variable (TmzV173)

New Takamizawa variable (TmzV173)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV173).

TmzV173
= GSC3744.612 042942.65 +583738.6 (2000.0) 12.82 1
= USNO1425.05327759 042942.691 +583738.56 (2000.0) 11.7 16.7
= IRAS04254+5831 042527.8 +583104 (1950.0)
    F12=1.58  F25=0.52  F60=0.40L F100=9.12L
    VAR= 0 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
= 042942.0 +583737 (2000.0) IRAS04254+5831 1.654 0.508 0.400L 9.038L 0%
= 042942.0 +583737 (2000.0) SSC04254+5831 1.654 0.508 0.400L 9.038L
= 042944.2 +583743 (2000.0) CS691 - 11.8: - -

  Takamizawa's comment:

  The star may be a semiregular variable (SR) with a range of 12.7-13.3p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV173        941108.549  130p  Tmz.VSOLJ
TmzV173        941224.463  132p  Tmz.VSOLJ
TmzV173        950127.497  133p  Tmz.VSOLJ
TmzV173        950127.506  132p  Tmz.VSOLJ
TmzV173        970802.715  131p  Tmz.VSOLJ
TmzV173        971010.696  129p  Tmz.VSOLJ
TmzV173        971010.738  128p  Tmz.VSOLJ
TmzV173        971123.518  129p  Tmz.VSOLJ
TmzV173        971221.472  128p  Tmz.VSOLJ
TmzV173        980116.455  131p  Tmz.VSOLJ
TmzV173        980820.699  129p  Tmz.VSOLJ
TmzV173        980823.706  128p  Tmz.VSOLJ
TmzV173        981024.551  131p  Tmz.VSOLJ
TmzV173        990109.489  127p  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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