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[vsnet-obs 20542] New Takamizawa variable (TmzV360)

New Takamizawa variable (TmzV360)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV360).

TmzV360
= GSC7127.431 075133.92 -351405.5 (2000.0) 13.88 0
= GSC7127.431 075133.92 -351405.3 (2000.0) 13.78 0
= USNO0525.05368874 075133.886 -351405.40 (2000.0) 99.9 13.6
= IRAS07497-3506 074942.2 -350622 (1950.0)
    F12=12.02  F25=5.25  F60=0.91  F100=10.96L
    VAR= 0 LRS=15
    blue featureless, spec.index=2.5
    II: variable star with 'young' O-rich circumstellar shell
= 075134.0 -351333 (2000.0) RAFGL4642S
= 075134.1 -351407 (2000.0) IRAS07497-3506 12.320 5.151 0.903 10.850L 0% 2(LRS)
= 075134.1 -351407 (2000.0) SSC07497-3506 12.320 5.151 0.903 10.850L
= 075136.0 -351259 (2000.0) M7(III)(Buscombe) - - -

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 12.1-13.5p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV360        941111.731  135p  Tmz.VSOLJ
TmzV360        941203.698  124p  Tmz.VSOLJ
TmzV360        950203.535  123p  Tmz.VSOLJ
TmzV360        951222.694  125p  Tmz.VSOLJ
TmzV360        961021.768  123p  Tmz.VSOLJ
TmzV360        970103.631  133p  Tmz.VSOLJ
TmzV360        971013.798  121p  Tmz.VSOLJ
TmzV360        971103.810  123p  Tmz.VSOLJ
TmzV360        971204.695  130p  Tmz.VSOLJ
TmzV360        971224.633  126p  Tmz.VSOLJ
TmzV360        980121.549  131p  Tmz.VSOLJ
TmzV360        980217.497  135p  Tmz.VSOLJ
TmzV360        980325.454  133p  Tmz.VSOLJ
TmzV360        981115.737  123p  Tmz.VSOLJ
TmzV360        990404.438  135p  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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