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[vsnet-newvar 1154] New Takamizawa variable (TmzV841)

New Takamizawa variable (TmzV841)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV841).

TmzV841
= GSC2335.1481 022610.19 +365130.3 (2000.0) 13.14 6 N
= USNO1200.01049156 022610.229 +365130.74 (2000.0) 11.7 15.2
= 2MASS 022610.160 +365129.82 (2000.0)  6.187  5.209  4.789
= IRAS02231+3638 022307.2 +363800 (1950.0)
     F12=1.32  F25=0.63  F60=0.40L F100=1.00L
     VAR= 1 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
= 022609.1 +365125 (2000.0) FSC02230+3637 1.218 0.683 0.167L 0.655L
= 022610.3 +365128 (2000.0) IRAS02231+3638 1.278 0.660 0.400L 1.009L 1%
= 022610.3 +365128 (2000.0) SSC02231+3638 1.278 0.660 0.400L 1.009L

  Takamizawa's comment:

  The star may be a semiregular variable  with a range of 13.3-14.1p.

Photographic magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag  code
TmzV841        19941102.661  134p  Tmz.VSOLJ
TmzV841        19950127.416  135p  Tmz.VSOLJ
TmzV841        19950320.429  138p  Tmz.VSOLJ
TmzV841        19950921.616  135p  Tmz.VSOLJ
TmzV841        19951217.524  133p  Tmz.VSOLJ
TmzV841        19960815.634  134p  Tmz.VSOLJ
TmzV841        19970830.647  140p  Tmz.VSOLJ
TmzV841        19980629.710  133p  Tmz.VSOLJ
TmzV841        19990709.706  136p  Tmz.VSOLJ
TmzV841        19991128.456  136p  Tmz.VSOLJ
TmzV841        20000604.735  135p  Tmz.VSOLJ
TmzV841        20000902.669  140p  Tmz.VSOLJ
TmzV841        20011023.597  141p  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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