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[vsnet-obs 18119] New Takamizawa variable (TmzV87)

New Takamizawa variable (TmzV87)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV87).

TmzV87
= GSC2987.1123 090847.83 +420921.0 (2000.0) 12.28 1
= IRAS09055+4221 090531.8 +422134 (1950.0)
    F12=1.20  F25=0.58  F60=0.40L F100=1.00L
    VAR= 9 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
= 090847.0 +420923 (2000.0) IRAS09055+4221 1.225 0.571 0.400L 1.000L 9%
= 090847.0 +420923 (2000.0) SSC09055+4221 1.225 0.571 0.400L 1.000L
= 090847.7 +420922 (2000.0) FSC09055+4221 1.249 0.522 0.129L 0.375L
= 090847.8 +420925 (2000.0) LMS118 M7 >13.5

   Takamizawa's comment:

  The star may be a semiregular variable (SR) with a range of 12.0-14.5p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV87         940512.576  124p  Tmz.VSOLJ
TmzV87         941130.740  120p  Tmz.VSOLJ
TmzV87         950222.422  145p  Tmz.VSOLJ
TmzV87         950222.471  145p  Tmz.VSOLJ
TmzV87         960112.529  130p  Tmz.VSOLJ
TmzV87         960113.541  129p  Tmz.VSOLJ
TmzV87         971105.739  121p  Tmz.VSOLJ
TmzV87         980102.602  125p  Tmz.VSOLJ
TmzV87         980119.523  129p  Tmz.VSOLJ
TmzV87         980318.551  140p  Tmz.VSOLJ
TmzV87         981117.748  120p  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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