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[vsnet-newvar 1285] New Takamizawa variable (TmzV899)

New Takamizawa variable (TmzV899)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV899).

TmzV899
= GSC4058.1019 022114.89 +664216.8 (2000.0) 12.13 1
= GSC4058.1019 022114.96 +664216.9 (2000.0) 12.31 1
= USNO1500.02364722 022114.909 +664217.18 (2000.0) 11.7 14.8
= IRAS02172+6628 021714.1 +662835 (1950.0)
     F12=0.69  F25=0.33L F60=0.40L F100=9.12L
     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
= 022115.8 +664217 (2000.0) IRAS02172+6628 0.708 0.322L 0.400L 9.210L -1%
= 022115.8 +664217 (2000.0) SSC02172+6628 0.708 0.322L 0.400L 9.210L

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 11.8-12.5p.

Photographic magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag  code
TmzV899        19950127.432  124p  Tmz.VSOLJ
TmzV899        19960922.656  120p  Tmz.VSOLJ
TmzV899        19970613.737  118p  Tmz.VSOLJ
TmzV899        19980116.420  125p  Tmz.VSOLJ
TmzV899        19980629.693  121p  Tmz.VSOLJ
TmzV899        19991128.440  124p  Tmz.VSOLJ
TmzV899        20000902.687  123p  Tmz.VSOLJ
TmzV899        20011023.613  123p  Tmz.VSOLJ

Observer's code:
  Tmz: K.Takamizawa (Saku-machi,Nagano,Japan)
       SASS (Saku All Sky Survey)
       Inst.: 10cmR F4 twin patrol cameras and 25cm F2.8
       Baker-Schmidt camera T-Max400 120
       Comparison stars mag.:GSC

Relayed from Kesao Takamizawa <k-takamizawa@nifty.ne.jp>

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