[vsnet-newvar 179] New Takamizawa variable (TmzV639)

[Taichi Kato <tkato>]

New Takamizawa variable (TmzV639)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV639).

TmzV639
= GSC4262.2061 215142.31 +610235.3 (2000.0) 11.76 6
= USNO1500.08560808 215142.315 +610235.29 (2000.0) 10.5 14.8
= IRAS21502+6048 215013.1 +604830 (1950.0)
    F12=1.00  F25=0.25  F60=0.40L F100=4.36L
    VAR=54 LRS=-1
 possibly I: oxygen-rich non-variable star without circumstellar shell
 or VIa: non-variable star with relatively cold dust at large
      distance, may be carbon-rich
= 215142.6 +610237 (2000.0) IRAS21502+6048 1.036 0.247 0.400L 4.188L 54%
= 215142.6 +610237 (2000.0) SSC21502+6048 1.036 0.247 0.400L 4.188L

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 11.9-12.5p.

object         YYYYMMDD(UT)   mag  code
TmzV639        19940903.562  120p  Tmz.VSOLJ
TmzV639        19970824.567  123p  Tmz.VSOLJ
TmzV639        19970827.540  122p  Tmz.VSOLJ
TmzV639        19971218.437  125p  Tmz.VSOLJ
TmzV639        19980823.562  122p  Tmz.VSOLJ
TmzV639        19980916.530  119p  Tmz.VSOLJ
TmzV639        19990709.574  119p  Tmz.VSOLJ
TmzV639        19990807.594  119p  Tmz.VSOLJ
TmzV639        19991226.462  123p  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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