[vsnet-chat 1097] max BJD-HJD plot

[Taichi Kato <tkato>]

max BJD-HJD plot

   I have calculated maximum barycentric correction to HJD versus time.
The plot is placed at

   http://ftp.kusastro.kyoto-u.ac.jp/pub/vsnet/others/BARY/calcbary.gif

   The calculation covers the period 1919-2023.  In recent years, the
amplitude of correction attained maximum (4.36 sec) around 1997 (still
high in 1998).  The recent minimum was reached in 1990, when the correction
became ~0.1 sec.  Purely HJD-based determination of periods of variable
stars during this interval may have suffered from this degree of error.
For reader's interest, the correction reached the maximum (4.87 sec)
in 1983.

Regards,
Taichi Kato

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