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[vsnet-gcvs 291] NSV04114: detection of large-amplitude variation by Toa

NSV04114: detection of large-amplitude variation by Toa

   Akira Takao (Kita-kyushu, Japan) reports the discovery of large-amplitude
variation in NSV04114.  From the amplitude in unfiltered CCD photometry,
the object is most likely a Mira-type variable.  The object was also
recorded at maximum (11.6p) in 1999 October by Katsumi Haseda.

NSV04114
= USNO0750.06291358 083102.264 -105804.57 (2000.0) 11.5 15.6
= IRAS08286-1047 082838.7 -104754 (1950.0)
    F12=2.29  F25=1.00  F60=0.40L F100=1.00L
    VAR=35 LRS=-1
 possibly II: variable star with 'young' O-rich circumstellar shell
 or VII: variable star with more evolved C-rich circumstellar shell
= 083101.8 -105803 (2000.0) FSC08286-1047 2.230 1.003 0.137 0.575L
= 083102.1 -105803 (2000.0) IRAS08286-1047 2.235 0.962 0.400L 1.000L 35%
= 083102.1 -105803 (2000.0) SSC08286-1047 2.235 0.962 0.400L 1.000L

CCD magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag  code
NSV04114       20020111.717  <130C  Toa.VSOLJ
NSV04114       20021122.813  128C  Toa.VSOLJ
NSV04114       20030115.631  116C  Toa.VSOLJ

mag compared to GSC5432.111, GSC5432.281

Observer's code:
  Toa: Akira Takao (Kita-kyushu, Japan)
       instruments:f200mm F4 Telephotolens+ST-8,unfiltered

Relayed from Akira Takao <drtakao@bronze.ocn.ne.jp>

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