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[vsnet-newvar 1202] New Takamizawa variable (TmzV874)

New Takamizawa variable (TmzV874)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV873).

TmzV874
= GSC4033.1173 020529.58 +613913.5 (2000.0) 10.74 1
= USNO1500.02137327 020529.586 +613913.50 (2000.0) 10.7 99.9
= IRAS02018+6124 020151.9 +612448 (1950.0)
     F12=1.20  F25=0.40  F60=0.44L F100=3.63L
     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
= 020528.8 +613907 (2000.0) IRAS02018+6124 1.181 0.396 0.423L 3.703L 0%
= 020528.8 +613907 (2000.0) SSC02018+6124 1.181 0.396 0.423L 3.703L
= 020529.4 +613913 (2000.0) MSX5C_G131.6029+00.0351 -16 -8 2 0 0 -2 V(%):-:-:1:-:-:-
= 020529.4 +613913 (2000.0) 1095 2.90 TYC2-4033.1173.1 (11.26 0.08) (14.66 0.58)

  Takamizawa's comment:

  The star may be a semiregular variable with a range of 11.2-11.7p.

Photographic magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag  code
TmzV874        19950127.432  116p  Tmz.VSOLJ
TmzV874        19960922.656  114p  Tmz.VSOLJ
TmzV874        19970613.737  115p  Tmz.VSOLJ
TmzV874        19970811.675  112p  Tmz.VSOLJ
TmzV874        19971218.478  116p  Tmz.VSOLJ
TmzV874        19980116.420  113p  Tmz.VSOLJ
TmzV874        19980629.693  114p  Tmz.VSOLJ
TmzV874        19980820.646  114p  Tmz.VSOLJ
TmzV874        19990724.672  117p  Tmz.VSOLJ
TmzV874        19991128.440  114p  Tmz.VSOLJ
TmzV874        20000902.678  115p  Tmz.VSOLJ
TmzV874        20011023.605  112p  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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