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[vsnet-newvar 673] New Takamizawa variable (TmzV778)

New Takamizawa variable (TmzV778)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV778).

TmzV778
= GSC5316.435 041704.26 -121313.1 (2000.0) 13.27 0
= GSC5316.435 041704.26 -121312.9 (2000.0) 13.23 0
= USNO0750.00954590 041704.272 -121312.79 (2000.0) 11.0 12.8
= 2MASS 041704.248 -121313.44 (2000.0)  0.000  0.000  0.000
= 2MASS 041704.272 -121312.23 (2000.0)  5.899  0.000  0.000
= IRAS04147-1220 041443.4 -122029 (1950.0)
     F12=1.58  F25=0.83  F60=0.40L F100=1.00L
     VAR=39 LRS=-1
  possibly IIIa: variable star with more evolved O-rich c.s. shell
  or VIb: variable star with relatively hot dust close to
       the star and relatively cold dust at large distance
       may be O-rich
  or VII: variable star with more evolved C-rich circumstellar shell
= 041703.5 -121312 (2000.0) FSC04147-1220 1.412 0.753 0.167L 0.933L
= 041704.0 -121309 (2000.0) IRAS04147-1220 1.563 0.846 0.400L 1.000L 39%
= 041704.0 -121309 (2000.0) SSC04147-1220 1.563 0.846 0.400L 1.000L
= 041704.1 -121315 (2000.0) LMS32 M6 >13.5
= 041706.0 -121259 (2000.0) M6III(Buscombe) V=9.80 B-V=1.22 U-B=1.20

  Takamizawa's comment:

  The star may be a semiregular variable  with a range of 12.4-13.6p.

Photographic magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag  code
TmzV778        19951020.719  134p  Tmz.VSOLJ
TmzV778        19960111.494  124p  Tmz.VSOLJ
TmzV778        19961020.638  127p  Tmz.VSOLJ
TmzV778        19961229.399  129p  Tmz.VSOLJ
TmzV778        19971101.648  130p  Tmz.VSOLJ
TmzV778        19971123.562  133p  Tmz.VSOLJ
TmzV778        19981111.613  128p  Tmz.VSOLJ
TmzV778        19981112.579  129p  Tmz.VSOLJ
TmzV778        19991104.701  135p  Tmz.VSOLJ
TmzV778        19991129.564  127p  Tmz.VSOLJ
TmzV778        20000924.788  136p  Tmz.VSOLJ

Observer's code:
  Tmz: K.Takamizawa (Saku-machi,Nagano,Japan)
       SASS (Saku All Sky Survey)
       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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