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[vsnet-obs 19872] New Takamizawa variable (TmzV298)

New Takamizawa variable (TmzV298)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV298).

TmzV298
= GSC776.274 072428.26 +143406.2 (2000.0) 11.83 6
= GSC776.274 072428.31 +143406.2 (2000.0) 10.08 1
= USNO0975.05153731 072428.290 +143406.24 (2000.0) 11.0 99.9
= IRAS07216+1440 072137.9 +144002 (1950.0)
    F12=1.10  F25=0.69  F60=0.40L F100=1.00L
    VAR= 9 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
= 072426.9 +143410 (2000.0) FSC07216+1440 1.170 0.667 0.179L 0.668L
= 072427.8 +143406 (2000.0) IRAS07216+1440 1.132 0.687 0.400L 1.000L 9%
= 072427.8 +143406 (2000.0) SSC07216+1440 1.132 0.687 0.400L 1.000L
= 072428.0 +143421 (2000.0) DO13003

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 11.7-12.7p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV298        940306.459  119p  Tmz.VSOLJ
TmzV298        950220.493  117p  Tmz.VSOLJ
TmzV298        951025.756  119p  Tmz.VSOLJ
TmzV298        951222.656  119p  Tmz.VSOLJ
TmzV298        961015.812  127p  Tmz.VSOLJ
TmzV298        961206.683  127p  Tmz.VSOLJ
TmzV298        970830.794  117p  Tmz.VSOLJ
TmzV298        970929.784  122p  Tmz.VSOLJ
TmzV298        971103.778  122p  Tmz.VSOLJ
TmzV298        971204.729  123p  Tmz.VSOLJ
TmzV298        971224.658  119p  Tmz.VSOLJ
TmzV298        980121.572  121p  Tmz.VSOLJ
TmzV298        980217.522  122p  Tmz.VSOLJ
TmzV298        980919.760  119p  Tmz.VSOLJ
TmzV298        981115.761  117p  Tmz.VSOLJ
TmzV298        981212.653  117p  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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