[vsnet-obs 23399] New Takamizawa variable (TmzV549)

[Taichi Kato <tkato>]

New Takamizawa variable (TmzV549)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV549).

TmzV549
= GSC4462.181 214442.14 +674929.2 (2000.0) 12.09 1
= USNO1575.04842028 214442.143 +674929.06 (2000.0) 11.6 15.1
= IRAS21436+6735 214340.0 +673533 (1950.0)
    F12=0.58  F25=0.19  F60=0.40L F100=17.37L
    VAR= 4 LRS=-1
 possibly I: oxygen-rich non-variable star without 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
= 214441.5 +674932 (2000.0) FSC21436+6735 0.529 0.175 0.523L 7.642L
= 214442.6 +674924 (2000.0) IRAS21436+6735 0.569 0.194 0.400L 16.990L 4%
= 214442.6 +674924 (2000.0) SSC21436+6735 0.569 0.194 0.400L 16.990L

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 11.9-13.0p.

object         YYMMDD(UT)   mag  code
TmzV549        970827.540  130p  Tmz.VSOLJ
TmzV549        971218.437  123p  Tmz.VSOLJ
TmzV549        980823.563  125p  Tmz.VSOLJ
TmzV549        980916.530  127p  Tmz.VSOLJ
TmzV549        981107.440  124p  Tmz.VSOLJ
TmzV549        990709.574  119p  Tmz.VSOLJ
TmzV549        990807.594  125p  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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