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[vsnet-newvar 397] New Takamizawa variable (TmzV752)

New Takamizawa variable (TmzV752)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV752).

TmzV752
= GSC4479.817 234833.10 +685014.1 (2000.0) 13.28 1
= GSC4479.817 234833.22 +685014.3 (2000.0) 13.90 1
= USNO1575.05926916 234833.220 +685014.20 (2000.0) 12.5 16.6
= IRAS23461+6833 234608.7 +683333 (1950.0)
    F12=3.63  F25=1.32  F60=0.69L F100=7.58L
    VAR=31 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
= 234832.9 +685013 (2000.0) IRAS23461+6833 3.600 1.298 0.682L 7.594L 31%
= 234832.9 +685013 (2000.0) SSC23461+6833 3.600 1.298 0.682L 7.594L

  Takamizawa's comment:

  The star may be an irregular variable with a range of 13.1-14.9p.

Photographic magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag  code
TmzV752        19950119.419  141p  Tmz.VSOLJ
TmzV752        19950921.566  148p  Tmz.VSOLJ
TmzV752        19951020.517  143p  Tmz.VSOLJ
TmzV752        19960811.583  148p  Tmz.VSOLJ
TmzV752        19970506.750  <139  Tmz.VSOLJ
TmzV752        19970613.697  149p  Tmz.VSOLJ
TmzV752        19970703.719  <131  Tmz.VSOLJ
TmzV752        19970811.649  140p  Tmz.VSOLJ
TmzV752        19971218.445  141p  Tmz.VSOLJ
TmzV752        19980603.739  142p  Tmz.VSOLJ
TmzV752        19980819.656  136p  Tmz.VSOLJ
TmzV752        19980823.592  135p  Tmz.VSOLJ
TmzV752        19980916.560  136p  Tmz.VSOLJ
TmzV752        19990105.438  137p  Tmz.VSOLJ
TmzV752        19990511.727  139p  Tmz.VSOLJ
TmzV752        19990513.716  147p  Tmz.VSOLJ
TmzV752        19990724.657  142p  Tmz.VSOLJ
TmzV752        19991225.438  147p  Tmz.VSOLJ
TmzV752        20000503.730  131p  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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