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[vsnet-obs 20083] New Takamizawa variable (TmzV324)

New Takamizawa variable (TmzV324)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV324).

TmzV324
= GSC5981.545 074502.43 -150049.4 (2000.0) 13.47 0
= USNO0675.04887872 074502.422 -150049.75 (2000.0) 11.8 15.2
= IRAS07427-1453 074245.4 -145331 (1950.0)
    F12=0.48  F25=0.36  F60=0.40L F100=1.00L
    VAR= 0 LRS=-1
 possibly IIIa: variable star with more evolved O-rich c.s. shell
 or VIb: variable star with relatively hot dust close to
      the star and relatively cold dust at large distance
      may be O-rich
= 074503.0 -150049 (2000.0) IRAS07427-1453 0.489 0.381 0.400L 1.000L 0%
= 074503.0 -150049 (2000.0) SSC07427-1453 0.489 0.381 0.400L 1.000L
= 074500.0 -150000 (2000.0) M6(III)(Buscombe) - - -

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 12.8-13.9p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV324        940314.505  132p  Tmz.VSOLJ
TmzV324        941111.738  132p  Tmz.VSOLJ
TmzV324        950203.546  131p  Tmz.VSOLJ
TmzV324        950927.799  133p  Tmz.VSOLJ
TmzV324        951118.744  133p  Tmz.VSOLJ
TmzV324        951222.685  133p  Tmz.VSOLJ
TmzV324        960211.515  131p  Tmz.VSOLJ
TmzV324        961021.776  134p  Tmz.VSOLJ
TmzV324        961206.707  139p  Tmz.VSOLJ
TmzV324        970103.622  136p  Tmz.VSOLJ
TmzV324        970227.485  137p  Tmz.VSOLJ
TmzV324        971013.791  128p  Tmz.VSOLJ
TmzV324        971103.802  128p  Tmz.VSOLJ
TmzV324        971204.703  130p  Tmz.VSOLJ
TmzV324        971224.641  132p  Tmz.VSOLJ
TmzV324        980121.556  133p  Tmz.VSOLJ
TmzV324        980217.505  136p  Tmz.VSOLJ
TmzV324        980325.461  135p  Tmz.VSOLJ
TmzV324        981115.744  134p  Tmz.VSOLJ
TmzV324        981212.628  133p  Tmz.VSOLJ
TmzV324        990208.557  130p  Tmz.VSOLJ
TmzV324        990404.438  132p  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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