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[vsnet-obs 18507] New Takamizawa variable (TmzV123)

New Takamizawa variable (TmzV123)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV123).

TmzV123
= GSC4084.1302 051046.16 +621402.7 (2000.0) 13.45 1
= USNO1500.04123524 051046.166 +621402.57 (2000.0) 11.8 15.1
= IRAS05061+6210 050609.6 +621020 (1950.0)
    F12=1.44  F25=0.69  F60=0.40L F100=1.20L
    VAR=19 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
= 051044.8 +621400 (2000.0) FSC05061+6210 1.408 0.725 0.149L 1.651L
= 051046.8 +621403 (2000.0) IRAS05061+6210 1.430 0.672 0.400L 1.203L 19%
= 051046.8 +621403 (2000.0) SSC05061+6210 1.430 0.672 0.400L 1.203L

  Takamizawa's comment:

  The star may be a semiregular variable (SR) with a range of 13.4-14.1p.

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
TmzV123        941108.587  136p  Tmz.VSOLJ
TmzV123        941224.470  134p  Tmz.VSOLJ
TmzV123        950127.514  140p  Tmz.VSOLJ
TmzV123        951128.592  141p  Tmz.VSOLJ
TmzV123        971123.579  140p  Tmz.VSOLJ
TmzV123        971231.580  135p  Tmz.VSOLJ
TmzV123        980318.457  137p  Tmz.VSOLJ
TmzV123        980820.715  137p  Tmz.VSOLJ
TmzV123        981218.581  141p  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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