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[vsnet-obs 19219] New Takamizawa variable (TmzV223)

New Takamizawa variable (TmzV223)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV223).

TmzV223
= GSC4342.354 050422.14 +674748.6 (2000.0) 10.97 1
= GSC4342.354 050422.29 +674747.4 (2000.0) 11.28 1
= USNO1575.02251319 050422.226 +674747.47 (2000.0) 11.4 14.2
= IRAS04592+6743 045914.2 +674340 (1950.0)
    F12=0.63  F25=0.28  F60=0.40L F100=1.10L
    VAR= 8 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
= 050422.9 +674747 (2000.0) FSC04591+6743 0.624 0.242 0.158L 1.715L
= 050426.0 +674751 (2000.0) IRAS04592+6743 0.618 0.270 0.400L 1.145L 8%
= 050426.0 +674751 (2000.0) SSC04592+6743 0.618 0.270 0.400L 1.145L
= 050415.7 +674646 (2000.0) DO28847

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 11.4-12.4p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV223        950127.514  124p  Tmz.VSOLJ
TmzV223        951128.592  121p  Tmz.VSOLJ
TmzV223        971123.579  119p  Tmz.VSOLJ
TmzV223        971221.472  117p  Tmz.VSOLJ
TmzV223        980116.455  117p  Tmz.VSOLJ
TmzV223        980820.715  116p  Tmz.VSOLJ
TmzV223        980823.706  116p  Tmz.VSOLJ
TmzV223        981024.551  117p  Tmz.VSOLJ
TmzV223        981218.581  114p  Tmz.VSOLJ
TmzV223        990204.394  123p  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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