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[vsnet-obs 18858] New Takamizawa variable (TmzV156)

New Takamizawa variable (TmzV156)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV156).

TmzV156
Takamizawa's position: 04h35m45s.3 +63o12'16"
(no USNO counterpart)
= IRAS04311+6306 043109.5 +630610 (1950.0)
    F12=1.20  F25=0.36  F60=0.40L F100=2.51L
    VAR= 0 LRS=-1
 possibly I: oxygen-rich non-variable star without 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
= 043545.4 +631218 (2000.0) FSC04311+6306 1.080 0.299 0.330L 3.810L
= 043545.8 +631219 (2000.0) IRAS04311+6306 1.147 0.355 0.400L 2.535L 0%
= 043545.8 +631219 (2000.0) SSC04311+6306 1.147 0.355 0.400L 2.535L

  Takamizawa's comment:

  The star may be a Mira-type variable with a range of 13.7-<15.0p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV156        950127.497  137p  Tmz.VSOLJ
TmzV156        951128.592  151p  Tmz.VSOLJ
TmzV156        970802.715  <147p  Tmz.VSOLJ
TmzV156        971123.522  <150p  Tmz.VSOLJ
TmzV156        971123.579  <150p  Tmz.VSOLJ
TmzV156        971221.449  <147p  Tmz.VSOLJ
TmzV156        980116.455  <147p  Tmz.VSOLJ
TmzV156        980820.699  <147p  Tmz.VSOLJ
TmzV156        980823.706  <147p  Tmz.VSOLJ
TmzV156        981024.551  <147p  Tmz.VSOLJ
TmzV156        981218.581  <147p  Tmz.VSOLJ
TmzV156        990109.489  148p  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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