[vsnet-newvar 189] New Takamizawa variable (TmzV648)

[Taichi Kato <tkato>]

New Takamizawa variable (TmzV648)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV648).

TmzV648
= GSC3980.483 215534.73 +595508.0 (2000.0) 12.40 6
= USNO1425.12654938 215534.876 +595508.40 (2000.0) 10.9 16.6
= IRAS21540+5940 215400.6 +594045 (1950.0)
    F12=0.91  F25=0.40  F60=0.33  F100=6.31L
    VAR= 7 LRS=-1
    VIa: non-variable star with relatively cold dust at large
      distance, may be carbon-rich
= 215534.6 +595501 (2000.0) IRAS21540+5940 0.937 0.386 0.322 6.034L 7%
= 215534.6 +595501 (2000.0) SSC21540+5940 0.937 0.386 0.322 6.034L
= 215534.6 +595508 (2000.0) CS5502 - - 10.1 -

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 12.2-13.0p.

object         YYYYMMDD(UT)   mag  code
TmzV648        19940903.562  129p  Tmz.VSOLJ
TmzV648        19970824.567  125p  Tmz.VSOLJ
TmzV648        19970827.540  123p  Tmz.VSOLJ
TmzV648        19971218.437  124p  Tmz.VSOLJ
TmzV648        19980823.562  125p  Tmz.VSOLJ
TmzV648        19980916.530  122p  Tmz.VSOLJ
TmzV648        19990709.574  122p  Tmz.VSOLJ
TmzV648        19990807.594  130p  Tmz.VSOLJ
TmzV648        19991226.462  130p  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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