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[vsnet-newvar 229] New Takamizawa variable (TmzV681)

New Takamizawa variable (TmzV681)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV681).  The object is probably identical with LD 260.

TmzV681
= GSC3994.802 222351.74 +584416.4 (2000.0) 12.45 6
= USNO1425.13468321 222351.756 +584416.19 (2000.0) 11.7 19.4
= IRAS22220+5829 222203.3 +582903 (1950.0)
    F12=3.63  F25=1.20  F60=2.51L F100=27.53L
    VAR=41 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
= 222351.6 +584415 (2000.0) CS5650 - 13.1 9.5 -
= 222352.0 +584416 (2000.0) IRAS22220+5829 3.682 1.200 2.468L 27.320L 41%
= 222352.0 +584416 (2000.0) SSC22220+5829 3.682 1.200 2.468L 27.320L
= 222340.4 +584455 (2000.0) LD260 14.0 15.2v L 
= 222347.9 +584359 (2000.0) C(Buscombe) V=13.1 - -

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 12.4-13.4p.

object         YYYYMMDD(UT)   mag  code
TmzV681        19940903.562  124p  Tmz.VSOLJ
TmzV681        19970824.567  134p  Tmz.VSOLJ
TmzV681        19970827.540  133p  Tmz.VSOLJ
TmzV681        19971218.437  127p  Tmz.VSOLJ
TmzV681        19980823.562  126p  Tmz.VSOLJ
TmzV681        19980916.530  128p  Tmz.VSOLJ
TmzV681        19990709.574  126p  Tmz.VSOLJ
TmzV681        19990807.594  128p  Tmz.VSOLJ
TmzV681        19991226.462  132p  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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