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[vsnet-newvar 1150] New Takamizawa variable (TmzV838)

New Takamizawa variable (TmzV838)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV838).

TmzV838
= GSC7484.460 211254.59 -361512.9 (2000.0) 11.63 0
= USNO0525.35645077 211254.607 -361513.08 (2000.0)  9.0 11.6
= IRAS21097-3627 210947.9 -362735 (1950.0)
     F12=2.51  F25=1.58  F60=0.40L F100=1.00L
     VAR=35 LRS=-1
  possibly IIIa: variable star with more evolved O-rich c.s. shell
  or VII: variable star with more evolved C-rich circumstellar shell
= 211252.3 -361520 (2000.0) CD-36.14671 10.0
= 211254.5 -361512 (2000.0) IRAS21097-3627 2.482 1.575 0.400L 1.000L 35%
= 211254.5 -361512 (2000.0) SSC21097-3627 2.482 1.575 0.400L 1.000L
= 211254.6 -361511 (2000.0) FSC21098-3627 2.425 1.459 0.317L 0.940L
= 211254.5 -361511 (2000.0) 1058 1.21 TYC7484.460.1 plx=68.9(53.0) (0.11 0.25)
= 211254.6 -361510 (2000.0) 1046 1.42 TYC2-7484.460.1 (10.61 0.07) (12.28 0.23)

  Takamizawa's comment:

  The star may be a semiregular variable  with a range of 10.6-11.3p.

Photographic magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag  code
TmzV838        19940810.644  113p  Tmz.VSOLJ
TmzV838        19950921.518  106p  Tmz.VSOLJ
TmzV838        19960721.671  113p  Tmz.VSOLJ
TmzV838        19960815.606  110p  Tmz.VSOLJ
TmzV838        19970706.687  111p  Tmz.VSOLJ
TmzV838        20011013.435  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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