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[vsnet-obs 20359] New Takamizawa variable (TmzV357)

New Takamizawa variable (TmzV357)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV357).

TmzV357
= GSC6549.1565 072149.07 -283840.5 (2000.0) 12.71 11
= GSC6549.1565 072149.07 -283840.1 (2000.0) 13.23 0
= USNO0600.03358612 072149.096 -283840.55 (2000.0) 10.5 12.8
= IRAS07198-2832 071949.3 -283252 (1950.0)
    F12=1.32  F25=0.52  F60=0.40L F100=6.31L
    VAR=52 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
= 072148.8 -283838 (2000.0) IRAS07198-2832 1.342 0.522 0.400L 6.393L 52%
= 072148.8 -283838 (2000.0) SSC07198-2832 1.342 0.522 0.400L 6.393L
= 072148.0 -283659 (2000.0) M7(III)(Buscombe) - - -

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 11.8-12.7p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV357        940314.501  123p  Tmz.VSOLJ
TmzV357        941111.731  122p  Tmz.VSOLJ
TmzV357        950203.546  125p  Tmz.VSOLJ
TmzV357        950927.799  124p  Tmz.VSOLJ
TmzV357        951118.744  125p  Tmz.VSOLJ
TmzV357        951222.685  123p  Tmz.VSOLJ
TmzV357        961021.768  127p  Tmz.VSOLJ
TmzV357        961206.707  123p  Tmz.VSOLJ
TmzV357        970103.622  124p  Tmz.VSOLJ
TmzV357        970227.485  122p  Tmz.VSOLJ
TmzV357        971013.798  118p  Tmz.VSOLJ
TmzV357        971103.802  123p  Tmz.VSOLJ
TmzV357        971204.695  122p  Tmz.VSOLJ
TmzV357        971224.633  123p  Tmz.VSOLJ
TmzV357        980121.549  125p  Tmz.VSOLJ
TmzV357        980217.497  124p  Tmz.VSOLJ
TmzV357        980325.453  120p  Tmz.VSOLJ
TmzV357        981115.737  124p  Tmz.VSOLJ
TmzV357        981212.628  122p  Tmz.VSOLJ
TmzV357        990208.557  124p  Tmz.VSOLJ
TmzV357        990404.438  122p  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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