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[vsnet-newvar 1133] New Takamizawa variable (TmzV822)

New Takamizawa variable (TmzV822)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV822).

TmzV822
= GSC6343.577 204409.69 -221811.8 (2000.0) 13.44 0
= GSC6343.577 204409.70 -221811.8 (2000.0) 12.65 0
= GSC6343.577 204409.76 -221811.7 (2000.0) 12.85 0
= USNO0675.22540792 204409.703 -221811.80 (2000.0) 10.7 12.8
= 2MASS 204409.720 -221811.88 (2000.0)  0.000  0.000  0.000
= IRAS20412-2229 204115.2 -222905 (1950.0)
     F12=7.58  F25=4.36  F60=0.76  F100=1.00L
     VAR=16 LRS=-1
     IIIa: variable star with more evolved O-rich c.s. shell
= 204409.6 -221809 (2000.0) LMS524 M6-7 11.7
= 204409.7 -221811 (2000.0) IRAS20412-2229 7.255 4.376 0.740 1.000L 16%
= 204409.7 -221811 (2000.0) SSC20412-2229 7.255 4.376 0.740 1.000L
= 204410.7 -221807 (2000.0) FSC20412-2229 7.628 4.403 0.653 0.657L

  Takamizawa's comment:

  The star may be a semiregular variable  with a range of 11.7-12.8p.

Photographic magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag  code
TmzV822        19940512.742  128p  Tmz.VSOLJ
TmzV822        19940703.665  127p  Tmz.VSOLJ
TmzV822        19940803.588  120p  Tmz.VSOLJ
TmzV822        19940810.651  122p  Tmz.VSOLJ
TmzV822        19940930.540  123p  Tmz.VSOLJ
TmzV822        19941127.394  117p  Tmz.VSOLJ
TmzV822        19950723.663  118p  Tmz.VSOLJ
TmzV822        19951020.433  123p  Tmz.VSOLJ
TmzV822        19960815.551  121p  Tmz.VSOLJ
TmzV822        19970706.686  119p  Tmz.VSOLJ
TmzV822        19971025.518  120p  Tmz.VSOLJ
TmzV822        19990708.667  126p  Tmz.VSOLJ
TmzV822        20011013.444  125p  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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