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[vsnet-newvar 765] New Takamizawa variable (TmzV788)

New Takamizawa variable (TmzV788)

   Kesao Takamizawa (Nagano, Japan) reports the discovery of a new variable
star (TmzV788).

TmzV788
= GSC6786.1255 155356.62 -275420.0 (2000.0) 13.01 0
= GSC6786.1255 155356.63 -275420.1 (2000.0) 15.20 0 N
= USNO0600.10886839 155356.580 -275420.67 (2000.0) 12.8 16.4
= IRAS15508-2745 155052.8 -274532 (1950.0)
     F12=2.75  F25=1.58  F60=0.44L F100=8.31L
     VAR= 0 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
= 155355.7 -275418 (2000.0) FSC15508-2745 2.629 1.475 0.618L 2.636L
= 155356.4 -275421 (2000.0) IRAS15508-2745 2.651 1.585 0.439L 8.586L 0%
= 155356.4 -275421 (2000.0) SSC15508-2745 2.651 1.585 0.439L 8.586L

  Takamizawa's comment:

  The star may be a Mira-type variable  with a range of 12.1-<15.3p.

Photographic magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag  code
TmzV788        19940217.789  152p  Tmz.VSOLJ
TmzV788        19940315.724  154p  Tmz.VSOLJ
TmzV788        19940411.761  125p  Tmz.VSOLJ
TmzV788        19940506.656  121p  Tmz.VSOLJ
TmzV788        19940603.590  124p  Tmz.VSOLJ
TmzV788        19950110.852  144p  Tmz.VSOLJ
TmzV788        19950207.777  133p  Tmz.VSOLJ
TmzV788        19950226.731  127p  Tmz.VSOLJ
TmzV788        19950423.643  142p  Tmz.VSOLJ
TmzV788        19960127.819  134p  Tmz.VSOLJ
TmzV788        19960219.775  134p  Tmz.VSOLJ
TmzV788        19960413.722  151p  Tmz.VSOLJ
TmzV788        19960619.519  <151p  Tmz.VSOLJ
TmzV788        19970209.808  <145p  Tmz.VSOLJ
TmzV788        19980302.740  <153p  Tmz.VSOLJ
TmzV788        19980620.546  135p  Tmz.VSOLJ
TmzV788        19980908.433  133p  Tmz.VSOLJ
TmzV788        19980910.438  131p  Tmz.VSOLJ
TmzV788        19990117.849  140p  Tmz.VSOLJ
TmzV788        19990414.701  143p  Tmz.VSOLJ
TmzV788        20000314.778  125p  Tmz.VSOLJ
TmzV788        20000401.713  123p  Tmz.VSOLJ
TmzV788        20010202.812  126p  Tmz.VSOLJ

Observer's code:
  Tmz: K.Takamizawa (Saku-machi,Nagano,Japan)
       SASS (Saku All Sky Survey)
       Inst.: 10cmR F4 twin patrol cameras  T-Max400 120
       Baker-Schmidt camera T-Max400 120
       Comparison stars mag.:GSC

Relayed from Kesao Takamizawa <GHA07243@nifty.ne.jp>

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