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[vsnet-newvar 390] New Takamizawa variable (TmzV750)

New Takamizawa variable (TmzV750)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV750).

TmzV750
= USNO0975.01987331 054543.564 +093535.64 (2000.0) 11.8 15.2
= IRAS05429+0934 054258.2 +093428 (1950.0)
    F12=2.29  F25=0.83  F60=0.40L F100=2.51L
    VAR=62 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
= 054543.1 +093536 (2000.0) IRAS05429+0934 2.309 0.807 0.400L 2.513L 62%
= 054543.1 +093536 (2000.0) SSC05429+0934 2.309 0.807 0.400L 2.513L

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 12.6-13.8p.

Photographic magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag  code
TmzV750        19940302.564  130p  Tmz.VSOLJ
TmzV750        19940330.466  132p  Tmz.VSOLJ
TmzV750        19940812.760  133p  Tmz.VSOLJ
TmzV750        19941014.755  134p  Tmz.VSOLJ
TmzV750        19941108.694  132p  Tmz.VSOLJ
TmzV750        19950203.432  130p  Tmz.VSOLJ
TmzV750        19950219.417  128p  Tmz.VSOLJ
TmzV750        19950927.733  133p  Tmz.VSOLJ
TmzV750        19951021.724  134p  Tmz.VSOLJ
TmzV750        19951217.565  130p  Tmz.VSOLJ
TmzV750        19961203.612  132p  Tmz.VSOLJ
TmzV750        19970811.753  133p  Tmz.VSOLJ
TmzV750        19970928.742  131p  Tmz.VSOLJ
TmzV750        19971221.540  133p  Tmz.VSOLJ
TmzV750        19980820.765  126p  Tmz.VSOLJ
TmzV750        19980916.744  132p  Tmz.VSOLJ
TmzV750        19981212.572  138p  Tmz.VSOLJ
TmzV750        19990111.572  135p  Tmz.VSOLJ
TmzV750        19990206.440  135p  Tmz.VSOLJ
TmzV750        19991105.742  136p  Tmz.VSOLJ
TmzV750        20000124.481  130p  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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