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[vsnet-obs 19029] New Takamizawa variable (TmzV189)

New Takamizawa variable (TmzV189)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV189).

TmzV189
= USNO1350.03975719 034745.416 +511049.77 (2000.0) 14.3 18.5
= IRAS03440+5101 034402.9 +510138 (1950.0)
    F12=1.58  F25=0.58  F60=0.40L F100=3.63L
    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
= 034745.6 +511051 (2000.0) IRAS03440+5101 1.527 0.547 0.400L 3.514L 0%
= 034745.6 +511051 (2000.0) SSC03440+5101 1.527 0.547 0.400L 3.514L

  Takamizawa's comment:

  The star may be a Mira-type variable  with  a renge of 12.8-<14.5p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV189        940910.701  130p  Tmz.VSOLJ
TmzV189        941108.549  131p  Tmz.VSOLJ
TmzV189        950823.720  <145p  Tmz.VSOLJ
TmzV189        951127.554  <147p  Tmz.VSOLJ
TmzV189        970714.728  <145p  Tmz.VSOLJ
TmzV189        970802.707  <145p  Tmz.VSOLJ
TmzV189        971010.696  <145p  Tmz.VSOLJ
TmzV189        971123.526  <145p  Tmz.VSOLJ
TmzV189        971221.456  144p  Tmz.VSOLJ
TmzV189        980820.706  128p  Tmz.VSOLJ
TmzV189        990109.498  136p  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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