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[vsnet-obs 20562] New Takamizawa variable (TmzV363)

New Takamizawa variable (TmzV363)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV363).

TmzV363
= GSC7105.1715 073142.33 -302736.2 (2000.0) 12.80 0 N
= GSC7105.1715 073142.34 -302735.9 (2000.0) 12.51 0
= USNO0525.04439069 073142.294 -302736.51 (2000.0) 10.6 12.6
= USNO0525.04440498 073143.892 -302718.14 (2000.0) 14.4 14.6
= IRAS07297-3021 072945.4 -302112 (1950.0)
    F12=1.44  F25=0.63  F60=0.40L F100=1.58L
    VAR= 9 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
= 073141.9 -302659 (2000.0) M6(III)(Buscombe) - - -
= 073142.9 -302738 (2000.0) IRAS07297-3021 1.392 0.636 0.400L 1.636L 9%
= 073142.9 -302738 (2000.0) SSC07297-3021 1.392 0.636 0.400L 1.636L

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 11.8-13.2p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV363        941111.731  121p  Tmz.VSOLJ
TmzV363        941203.698  119p  Tmz.VSOLJ
TmzV363        950203.535  128p  Tmz.VSOLJ
TmzV363        951222.694  130p  Tmz.VSOLJ
TmzV363        961021.768  121p  Tmz.VSOLJ
TmzV363        970103.631  132p  Tmz.VSOLJ
TmzV363        971013.798  128p  Tmz.VSOLJ
TmzV363        971103.810  128p  Tmz.VSOLJ
TmzV363        971204.695  122p  Tmz.VSOLJ
TmzV363        971224.633  121p  Tmz.VSOLJ
TmzV363        980121.549  120p  Tmz.VSOLJ
TmzV363        980217.497  118p  Tmz.VSOLJ
TmzV363        980325.454  121p  Tmz.VSOLJ
TmzV363        981115.737  121p  Tmz.VSOLJ
TmzV363        990404.438  120p  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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