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[vsnet-obs 19033] New Takamizawa variable (TmzV191)

New Takamizawa variable (TmzV191)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV191).

TmzV191
= USNO1350.04588584 042031.750 +514530.58 (2000.0) 11.7 15.9
= IRAS04167+5138 041642.0 +513821 (1950.0)
    F12=1.74  F25=0.83  F60=0.40L F100=2.51L
    VAR= 0 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
= 042032.1 +514529 (2000.0) IRAS04166+5138 1.687 0.835 0.400L 2.589L 0%
= 042032.1 +514529 (2000.0) SSC04166+5138 1.687 0.835 0.400L 2.589L

  Takamizawa's comment:

  The star may be a semiregular variable (SR) with  a renge of 13.1-14.3p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV191        940910.701  139p  Tmz.VSOLJ
TmzV191        941108.549  140p  Tmz.VSOLJ
TmzV191        950823.720  142p  Tmz.VSOLJ
TmzV191        951127.554  143p  Tmz.VSOLJ
TmzV191        970714.728  134p  Tmz.VSOLJ
TmzV191        970802.707  131p  Tmz.VSOLJ
TmzV191        971010.696  139p  Tmz.VSOLJ
TmzV191        971123.526  141p  Tmz.VSOLJ
TmzV191        971221.456  143p  Tmz.VSOLJ
TmzV191        980820.706  142p  Tmz.VSOLJ
TmzV191        990109.498  131p  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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