[vsnet-obs 20521] New Takamizawa variable (TmzV359)

[Taichi Kato <tkato>]

New Takamizawa variable (TmzV359)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV359).

TmzV359
= GSC4224.992 185815.73 +634857.4 (2000.0) 12.20 1
= USNO1500.06741665 185815.721 +634857.57 (2000.0) 11.6 14.4
= IRAS18578+6344 185753.3 +634447 (1950.0)
    F12=1.32  F25=0.63  F60=0.40L F100=1.00L
    VAR=32 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
= 185814.3 +634853 (2000.0) FSC18578+6344 1.265 0.622 0.138L 0.522L
= 185815.6 +634858 (2000.0) IRAS18578+6344 1.314 0.653 0.400L 1.000L 32%
= 185815.6 +634858 (2000.0) SSC18578+6344 1.314 0.653 0.400L 1.000L

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 12.1-12.8p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV359        960721.524  126p  Tmz.VSOLJ
TmzV359        970506.621  121p  Tmz.VSOLJ
TmzV359        980520.611  128p  Tmz.VSOLJ
TmzV359        981108.392  124p  Tmz.VSOLJ
TmzV359        990420.728  123p  Tmz.VSOLJ
TmzV359        990506.572  124p  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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