[vsnet-newvar 1145] New Takamizawa variable (TmzV834)

[Taichi Kato <tkato>]

New Takamizawa variable (TmzV834)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV834).

TmzV834
= GSC6933.239 204113.11 -281621.7 (2000.0) 12.86 0
= USNO0600.23425817 204113.116 -281621.57 (2000.0) 10.8 13.6
= 2MASS 204113.074 -281621.40 (2000.0)  5.636  0.000  0.000
= 2MASS 204113.104 -281621.72 (2000.0)  0.000  0.000  0.000
= IRAS20381-2827 203811.5 -282707 (1950.0)
     F12=1.44  F25=0.76  F60=0.40L F100=1.00L
     VAR=26 LRS=-1
  possibly IIIa: variable star with more evolved O-rich c.s. shell
  or VIb: variable star with relatively hot dust close to
       the star and relatively cold dust at large distance
       may be O-rich
  or VII: variable star with more evolved C-rich circumstellar shell
= 204112.3 -281621 (2000.0) FSC20381-2827 1.479 0.609 0.266L 1.186L
= 204112.8 -281623 (2000.0) IRAS20381-2827 1.501 0.758 0.400L 1.000L 26%
= 204112.8 -281623 (2000.0) SSC20381-2827 1.501 0.758 0.400L 1.000L

  Takamizawa's comment:

  The star may be a semiregular variable  with a range of 11.8-12.9p.

Photographic magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag  code
TmzV834        19940803.592  118p  Tmz.VSOLJ
TmzV834        19940810.644  119p  Tmz.VSOLJ
TmzV834        19940930.544  124p  Tmz.VSOLJ
TmzV834        19941127.394  125p  Tmz.VSOLJ
TmzV834        19950723.663  128p  Tmz.VSOLJ
TmzV834        19951020.433  128p  Tmz.VSOLJ
TmzV834        19960815.559  129p  Tmz.VSOLJ
TmzV834        19970706.694  123p  Tmz.VSOLJ
TmzV834        20011013.435  120p  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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