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[vsnet-newvar 1194] Confirmation of variability of MisV0200 (Takamizawa)

Confirmation of variability of MisV0200 (Takamizawa)

   Kesao Takamizawa (Nagano, Japan) reports the detection of a variable star,
which has been identifed with MisV0200.  The variability is confirmed.

MisV0200
= 2MASS 185910.972 +172703.60 (2000.0)  6.525  5.518  4.868
= IRAS18569+1722 185657.4 +172250 (1950.0)
     F12=2.75  F25=1.58  F60=0.40L F100=3.63L
     VAR=98 LRS=-1
  possibly IIIa: variable star with more evolved O-rich c.s. shell
  or VII: variable star with more evolved C-rich circumstellar shell
= 185910.9 +172704 (2000.0) MisV0200 11.5 12.5C SR? - - 
= 185910.8 +172701 (2000.0) IRAS18569+1722 2.769 1.567 0.400L 3.584L 98%
= 185910.8 +172701 (2000.0) SSC18569+1722 2.769 1.567 0.400L 3.584L

Takamizawa's comment:

  The star may be a Mira-type variable with a range of 11.4-<14.3p,
  and a period about 340days.

Photographic magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag  code
MisV0200       20000919.481  <143p  Tmz.VSOLJ
MisV0200       20001019.445  135p  Tmz.VSOLJ
MisV0200       20001027.424  127p  Tmz.VSOLJ
MisV0200       20001123.413  123p  Tmz.VSOLJ
MisV0200       20001213.369  <130p  Tmz.VSOLJ
MisV0200       20010216.792  <130p  Tmz.VSOLJ
MisV0200       20010302.779  <130p  Tmz.VSOLJ
MisV0200       20010318.712  <143p  Tmz.VSOLJ
MisV0200       20010321.768  <143p  Tmz.VSOLJ
MisV0200       20010326.763  <143p  Tmz.VSOLJ
MisV0200       20010331.739  <143p  Tmz.VSOLJ
MisV0200       20010419.684  <143p  Tmz.VSOLJ
MisV0200       20010426.677  <143p  Tmz.VSOLJ
MisV0200       20010512.588  <143p  Tmz.VSOLJ
MisV0200       20010516.634  <143p  Tmz.VSOLJ
MisV0200       20010525.638  <143p  Tmz.VSOLJ
MisV0200       20010611.523  <143p  Tmz.VSOLJ
MisV0200       20010620.619  <143p  Tmz.VSOLJ
MisV0200       20010701.613  <130p  Tmz.VSOLJ
MisV0200       20010720.482  <141p  Tmz.VSOLJ
MisV0200       20010817.470  <130p  Tmz.VSOLJ
MisV0200       20010924.477  130p  Tmz.VSOLJ
MisV0200       20011011.430  118p  Tmz.VSOLJ
MisV0200       20011019.435  120p  Tmz.VSOLJ
MisV0200       20011023.399  120p  Tmz.VSOLJ
MisV0200       20011104.413  114p  Tmz.VSOLJ

Observer's code:
  Tmz: K.Takamizawa (Saku-machi,Nagano,Japan)
       SASS (Saku All Sky Survey)
       Inst.: 10cmR F4 twin patrol cameras and 25cm F2.8
       Baker-Schmidt camera T-Max400 120
       Comparison stars mag.:GSC

Relayed from Kesao Takamizawa <k-takamizawa@nifty.ne.jp>

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