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[vsnet-obs 20334] New Takamizawa variable (TmzV356)

New Takamizawa variable (TmzV356)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV356).

TmzV356
= GSC6549.1201 072142.23 -282956.7 (2000.0) 12.53 11
= GSC6549.1201 072142.23 -282956.5 (2000.0) 13.36 0
= USNO0600.03353879 072142.244 -282956.57 (2000.0) 10.3 13.2
= IRAS07197-2824 071942.5 -282410 (1950.0)
    F12=3.02  F25=1.10  F60=0.40L F100=6.92L
    VAR=14 LRS=-1
 possibly II: variable star with 'young' O-rich circumstellar shell
 or VII: variable star with more evolved C-rich circumstellar shell
= 072142.2 -282955 (2000.0) IRAS07197-2824 2.890 1.051 0.400L 6.838L 14%
= 072142.2 -282955 (2000.0) SSC07197-2824 2.890 1.051 0.400L 6.838L
= 072141.9 -282859 (2000.0) M7(III)(Buscombe) - - -

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 12.3-12.9p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV356        940314.501  129p  Tmz.VSOLJ
TmzV356        941111.731  124p  Tmz.VSOLJ
TmzV356        950203.546  128p  Tmz.VSOLJ
TmzV356        950927.799  124p  Tmz.VSOLJ
TmzV356        951118.744  127p  Tmz.VSOLJ
TmzV356        951222.685  125p  Tmz.VSOLJ
TmzV356        961021.768  123p  Tmz.VSOLJ
TmzV356        961206.707  127p  Tmz.VSOLJ
TmzV356        970103.622  124p  Tmz.VSOLJ
TmzV356        970227.485  126p  Tmz.VSOLJ
TmzV356        971013.798  124p  Tmz.VSOLJ
TmzV356        971103.802  125p  Tmz.VSOLJ
TmzV356        971204.695  124p  Tmz.VSOLJ
TmzV356        971224.633  124p  Tmz.VSOLJ
TmzV356        980121.549  123p  Tmz.VSOLJ
TmzV356        980217.497  125p  Tmz.VSOLJ
TmzV356        980325.453  128p  Tmz.VSOLJ
TmzV356        981115.737  127p  Tmz.VSOLJ
TmzV356        981212.628  127p  Tmz.VSOLJ
TmzV356        990208.557  125p  Tmz.VSOLJ
TmzV356        990404.438  125p  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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