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[vsnet-newvar 1252] New Takamizawa variable (TmzV890)

New Takamizawa variable (TmzV890)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV890).

TmzV890
= GSC4055.1139 023744.99 +644856.7 (2000.0) 12.59 1
= USNO1500.02573221 023745.001 +644856.57 (2000.0) 11.7 17.5
= IRAS02337+6435 023342.8 +643557 (1950.0)
     F12=1.90  F25=0.69  F60=0.40L F100=3.31L
     VAR= 0 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
= 023744.8 +644858 (2000.0) MSX5C_G133.9375+04.2409 -24 -12 2 2 1 -3 V(%):-:-:0:-:-:-
= 023745.3 +644856 (2000.0) IRAS02337+6435 1.882 0.668 0.400L 3.180L 0%
= 023745.3 +644856 (2000.0) SSC02337+6435 1.882 0.668 0.400L 3.180L
= 023747.5 +644905 (2000.0) CS377 - 11.5: 9.5 -

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 13.0-13.9p.

Photographic magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag  code
TmzV890        19950127.432  137p  Tmz.VSOLJ
TmzV890        19960922.656  134p  Tmz.VSOLJ
TmzV890        19970613.737  130p  Tmz.VSOLJ
TmzV890        19980116.420  139p  Tmz.VSOLJ
TmzV890        19980629.693  135p  Tmz.VSOLJ
TmzV890        19991128.440  136p  Tmz.VSOLJ
TmzV890        20000902.687  133p  Tmz.VSOLJ
TmzV890        20011023.613  134p  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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