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[vsnet-obs 21816] New Takamizawa variable (TmzV457)

New Takamizawa variable (TmzV457)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV457).

TmzV457
= GSC7125.2601 080957.60 -322507.7 (2000.0) 12.65 6
= GSC7125.2601 080957.61 -322508.5 (2000.0) 13.30 0
= USNO0525.06251003 080957.606 -322508.44 (2000.0) 13.1 12.9
= IRAS08079-3215 080759.8 -321554 (1950.0)
    F12=2.09  F25=0.63  F60=0.40L F100=8.31L
    VAR=96 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
= 080957.7 -322448 (2000.0) IRAS08079-3215 2.052 0.651 0.400L 8.192L 96%
= 080957.7 -322448 (2000.0) SSC08079-3215 2.052 0.651 0.400L 8.192L

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 12.7-13.3p.

object         YYMMDD(UT)   mag  code
TmzV457        941111.724  132p  Tmz.VSOLJ
TmzV457        950220.528  127p  Tmz.VSOLJ
TmzV457        951118.735  132p  Tmz.VSOLJ
TmzV457        951222.701  133p  Tmz.VSOLJ
TmzV457        960211.540  130p  Tmz.VSOLJ
TmzV457        961021.828  133p  Tmz.VSOLJ
TmzV457        970227.495  131p  Tmz.VSOLJ
TmzV457        971013.806  132p  Tmz.VSOLJ
TmzV457        971103.834  127p  Tmz.VSOLJ
TmzV457        971203.741  128p  Tmz.VSOLJ
TmzV457        971231.679  128p  Tmz.VSOLJ
TmzV457        980322.516  127p  Tmz.VSOLJ
TmzV457        981115.785  131p  Tmz.VSOLJ
TmzV457        990208.537  130p  Tmz.VSOLJ
TmzV457        990404.452  129p  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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