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[vsnet-chat 6109] Re: [vsnet-ecl 910] Re: FU Eri observations

Sebastian

Oh dear... This is seriously embarrassing. I looked back through my files
and discovered that I had found a quite believable period of 1.87213(5)
days in 1998. Using that ephemeris as a starting point I have incorporated
the photometry published in the recent postings to come up with this...

HJD_minI = 2448725.728 + 1.872210xE
                 +/- 3      +/- 7

I have used only the two faintest points from Alexandre Amorim and there
may be other visual observations that I don't have. All the minima and all
the Hipparcos data are consistent with this ephemeris. The O-Cs are
tabulated below. I guess I should write this up, and the others.

      HJD           Cycle        O-C
   47984.3428        -396       0.0100 Hipparcos
   48381.2109        -184      -0.0303 Hipparcos
   48381.2256        -184      -0.0156 Hipparcos
   48585.3496         -75       0.0375 Hipparcos
   48725.7197           0      -0.0081 Hipparcos
   48725.7344           0       0.0066 Hipparcos
   52475.7788        2003       0.0150 Amorim
   52490.7385        2011      -0.0030 Amorim
   52683.5672        2114      -0.0119 Otero

Cheers,

Chris

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