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[vsnet-newvar 1161] New Takamizawa variable (TmzV847)

New Takamizawa variable (TmzV847)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV847).

TmzV847
= GSC2839.1779 022724.99 +425958.8 (2000.0) 10.45 1
= USNO1275.01515321 022725.014 +425958.74 (2000.0) 10.8 12.8
= 2MASS 022724.984 +425958.92 (2000.0)  0.000  0.000  0.000
= IRAS02242+4246 022414.8 +424633 (1950.0)
     F12=6.92  F25=3.63  F60=0.63  F100=1.00L
     VAR=15 LRS=-1
     IIIa: variable star with more evolved O-rich c.s. shell
= 022724.9 +425959 (2000.0) FSC02242+4246 7.368 3.487 0.669 1.335L
= 022725.3 +425958 (2000.0) IRAS02242+4246 7.217 3.527 0.631 1.000L 15%
= 022725.3 +425958 (2000.0) SSC02242+4246 7.217 3.527 0.631 1.000L
= 022725.0 +425958 (2000.0) 1151 1.15 TYC2-2839.1779.1 (11.64 0.12) (12.99 0.28)
= 022732.0 +425859 (2000.0) DO25736

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 11.0-11.9p.

Photographic magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag  code
TmzV847        19941102.661  111p  Tmz.VSOLJ
TmzV847        19950127.431  110p  Tmz.VSOLJ
TmzV847        19950320.429  113p  Tmz.VSOLJ
TmzV847        19960922.666  113p  Tmz.VSOLJ
TmzV847        19970613.728  116p  Tmz.VSOLJ
TmzV847        19980116.413  119p  Tmz.VSOLJ
TmzV847        19980629.701  117p  Tmz.VSOLJ
TmzV847        19991128.448  111p  Tmz.VSOLJ
TmzV847        20000902.669  116p  Tmz.VSOLJ
TmzV847        20011023.597  116p  Tmz.VSOLJ

Observer's code:
  Tmz: K.Takamizawa (Saku-machi,Nagano,Japan)
       SASS (Saku All Sky Survey)
       Inst.: 10cmR F4 twin patrol cameras and 25cm F2.8
       Baker-Schmidt camera T-Max400 120
       Comparison stars mag.:GSC

Relayed from Kesao Takamizawa <k-takamizawa@nifty.ne.jp>

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