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[vsnet-obs 18890] New Takamizawa variable (TmzV168)

New Takamizawa variable (TmzV168)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV168).

TmzV168
= GSC4090.861 043619.87 +665102.2 (2000.0) 12.01 1
= USNO1500.03820806 043619.870 +665102.47 (2000.0) 11.6 14.7
= IRAS04313+6644 043119.9 +664453 (1950.0)
    F12=0.52  F25=0.25L F60=0.40L F100=1.58L
    VAR=-1 LRS=-1
 possibly I: oxygen-rich non-variable star without circumstellar shell
 or 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
= 043618.5 +665100 (2000.0) IRAS04313+6644 0.541 0.250L 0.400L 1.551L -1%
= 043618.5 +665100 (2000.0) SSC04313+6644 0.541 0.250L 0.400L 1.551L
= 043620.4 +665101 (2000.0) FSC04313+6644 0.527 0.163 0.192L 1.951L

  Takamizawa's comment:

  The star may be a semiregular variable (SR) with a range of 11.8-12.6p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV168        950127.497  122p  Tmz.VSOLJ
TmzV168        951128.592  123p  Tmz.VSOLJ
TmzV168        970802.715  122p  Tmz.VSOLJ
TmzV168        971123.522  121p  Tmz.VSOLJ
TmzV168        971123.579  119p  Tmz.VSOLJ
TmzV168        971221.449  124p  Tmz.VSOLJ
TmzV168        980116.455  126p  Tmz.VSOLJ
TmzV168        980820.699  125p  Tmz.VSOLJ
TmzV168        980823.706  125p  Tmz.VSOLJ
TmzV168        981024.551  118p  Tmz.VSOLJ
TmzV168        981218.581  120p  Tmz.VSOLJ
TmzV168        990109.489  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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