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[vsnet-obs 23377] New Takamizawa variable (TmzV542)

New Takamizawa variable (TmzV542)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV542).

TmzV542
= GSC4462.198 215031.26 +691746.0 (2000.0) 13.70 1
= USNO1575.04877578 215031.274 +691746.41 (2000.0) 12.5 16.7
= IRAS21495+6903 214932.6 +690338 (1950.0)
    F12=1.00  F25=0.58  F60=0.40L F100=2.29L
    VAR=17 LRS=-1
 possibly IIIa: variable star with more evolved O-rich c.s. shell
 or VIb: variable star with relatively hot dust close to
      the star and relatively cold dust at large distance
      may be O-rich
 or VII: variable star with more evolved C-rich circumstellar shell
= 215030.8 +691745 (2000.0) FSC21495+6903 0.996 0.539 0.436L 2.969L
= 215031.9 +691743 (2000.0) IRAS21495+6903 1.043 0.575 0.400L 2.315L 17%
= 215031.9 +691743 (2000.0) SSC21495+6903 1.043 0.575 0.400L 2.315L

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 13.5-14.5p.

object         YYMMDD(UT)   mag  code
TmzV542        970827.540  135p  Tmz.VSOLJ
TmzV542        971218.437  138p  Tmz.VSOLJ
TmzV542        980823.563  145p  Tmz.VSOLJ
TmzV542        980916.530  140p  Tmz.VSOLJ
TmzV542        981107.440  141p  Tmz.VSOLJ
TmzV542        990709.574  139p  Tmz.VSOLJ
TmzV542        990807.594  142p  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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