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[vsnet-obs 23783] New Takamizawa variable (TmzV578)

New Takamizawa variable (TmzV578)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV578).

TmzV578
= GSC4252.1147 212129.25 +634219.7 (2000.0) 14.39 1
= GSC4252.1147 212129.33 +634220.5 (2000.0) 13.83 1 N
= USNO1500.08036684 212129.291 +634220.95 (2000.0) 12.4 15.9
= IRAS21203+6329 212021.5 +632931 (1950.0)
    F12=0.91  F25=0.36  F60=0.40L F100=2.51L
    VAR=53 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
= 212129.1 +634221 (2000.0) IRAS21203+6329 0.910 0.375 0.400L 2.520L 53%
= 212129.1 +634221 (2000.0) SSC21203+6329 0.910 0.375 0.400L 2.520L

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 13.3-14.2p.

object         YYMMDD(UT)   mag  code
TmzV578        970827.540  138p  Tmz.VSOLJ
TmzV578        971218.437  134p  Tmz.VSOLJ
TmzV578        980823.563  137p  Tmz.VSOLJ
TmzV578        980916.530  138p  Tmz.VSOLJ
TmzV578        981107.440  142p  Tmz.VSOLJ
TmzV578        990709.574  140p  Tmz.VSOLJ
TmzV578        990807.594  133p  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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