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[vsnet-newvar 1173] New Takamizawa variable (TmzV858)

New Takamizawa variable (TmzV858)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV858).

TmzV858
= GSC3686.504 022147.69 +531800.6 (2000.0) 11.15 1
= GSC3686.504 022147.69 +531800.1 (2000.0) 10.92 1
= USNO1425.03369059 022147.681 +531800.04 (2000.0) 10.4 12.5
= USNO1425.03369120 022147.807 +531800.14 (2000.0) 10.4 13.4
= IRAS02183+5304 021822.6 +530418 (1950.0)
     F12=1.20  F25=0.36  F60=0.40L F100=1.32L
     VAR= 6 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
= 022147.5 +531758 (2000.0) IRAS02183+5304 1.228 0.353 0.400L 1.352L 6%
= 022147.5 +531758 (2000.0) SSC02183+5304 1.228 0.353 0.400L 1.352L
= 022147.7 +531800 (2000.0) 1156 1.18 TYC2-3686.504.1 (11.68 0.12) (13.07 0.28)

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 11.4-12.0p.

Photographic magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag  code
TmzV858        19950127.424  119p  Tmz.VSOLJ
TmzV858        19960922.666  115p  Tmz.VSOLJ
TmzV858        19970613.728  117p  Tmz.VSOLJ
TmzV858        19980116.413  120p  Tmz.VSOLJ
TmzV858        19980629.701  116p  Tmz.VSOLJ
TmzV858        19991128.448  114p  Tmz.VSOLJ
TmzV858        20000902.678  114p  Tmz.VSOLJ
TmzV858        20011023.605  115p  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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