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[vsnet-alert 4515] XTEJ1118+480 prediscovery optical activity!

XTEJ1118+480 prediscovery optical activity!

   Kesao Takamizawa (Nagano, Japan) reports the examination of his previous
photographs has revealed that the optical counterpart of the X-ray transinet
XTE J1118+480 was already active since January, which is very consisent
with the reported source activity peaking on 2000 January 6 (IAUC 7389).

Photographic magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag  code
XTEJ1118+480   19941104.804  <154p  Tmz.VSOLJ
XTEJ1118+480   19941130.760  <154p  Tmz.VSOLJ
XTEJ1118+480   19950226.587  <154p  Tmz.VSOLJ
XTEJ1118+480   19951118.790  <154p  Tmz.VSOLJ
XTEJ1118+480   19960309.503  <154p  Tmz.VSOLJ
XTEJ1118+480   19970426.476  <154p  Tmz.VSOLJ
XTEJ1118+480   19970528.562  <150p  Tmz.VSOLJ
XTEJ1118+480   19971026.779  <150p  Tmz.VSOLJ
XTEJ1118+480   19971109.759  <154p  Tmz.VSOLJ
XTEJ1118+480   19980417.503  <154p  Tmz.VSOLJ
XTEJ1118+480   19981024.804  <154p  Tmz.VSOLJ
XTEJ1118+480   19981115.803  <154p  Tmz.VSOLJ
XTEJ1118+480   19990112.700  <150p  Tmz.VSOLJ
XTEJ1118+480   19990404.485  <154p  Tmz.VSOLJ
XTEJ1118+480   19991207.774  <154p  Tmz.VSOLJ
XTEJ1118+480   20000108.743  127p  Tmz.VSOLJ
XTEJ1118+480   20000108.747  127p  Tmz.VSOLJ
XTEJ1118+480   20000131.621  138p  Tmz.VSOLJ
XTEJ1118+480   20000131.626  138p  Tmz.VSOLJ
XTEJ1118+480   20000227.617  138p  Tmz.VSOLJ
XTEJ1118+480   20000227.621  138p  Tmz.VSOLJ
XTEJ1118+480   20000324.481  122p  Tmz.VSOLJ
XTEJ1118+480   20000324.487  129p  Tmz.VSOLJ

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

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

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