[vsnet-obs 22006] New Takamizawa variable (TmzV500)

[Taichi Kato <tkato>]

New Takamizawa variable (TmzV500)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV500).

TmzV500
= GSC6015.1899 083817.70 -181445.3 (2000.0) 11.53 0 N
= GSC6015.686 083817.76 -181441.7 (2000.0) 11.02 0 N
= GSC6015.686 083817.77 -181444.2 (2000.0) 11.01 0 N
= GSC6015.1383 083817.77 -181439.9 (2000.0) 11.09 0 N
= GSC6015.1383 083817.86 -181439.5 (2000.0) 11.11 0 N
= USNO0675.06755097 083817.700 -181445.35 (2000.0) 11.5 99.9
= USNO0675.06755120 083817.769 -181442.99 (2000.0) 11.0 99.9
= USNO0675.06755149 083817.846 -181439.07 (2000.0) 10.1 12.7 *
= IRAS08360-1804 083600.5 -180403 (1950.0)
    F12=1.20  F25=0.40  F60=0.40L F100=1.00L
    VAR=12 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
= 083817.2 -181437 (2000.0) IRAS08360-1804 1.221 0.407 0.400L 1.000L 12%
= 083817.2 -181437 (2000.0) SSC08360-1804 1.221 0.407 0.400L 1.000L
= 083817.6 -181438 (2000.0) FSC08360-1804 1.127 0.354 0.155L 0.760L

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 10.8-12.0p.

object         YYMMDD(UT)   mag  code
TmzV500        941109.794  113p  Tmz.VSOLJ
TmzV500        950203.655  108p  Tmz.VSOLJ
TmzV500        960112.567  120p  Tmz.VSOLJ
TmzV500        971105.778  114p  Tmz.VSOLJ
TmzV500        980102.642  112p  Tmz.VSOLJ
TmzV500        980125.544  117p  Tmz.VSOLJ
TmzV500        980322.524  109p  Tmz.VSOLJ
TmzV500        980329.476  108p  Tmz.VSOLJ
TmzV500        981117.801  116p  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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