Hi Sergey,
In addition to Bob's post about "missing asteroids", you may be
interested in
http://www.projectpluto.com/faq_curr.htm#missing_asteroids .
At some point, I'll probably get around to adding a long list of
possible ephemeris options, including angular diameter, range rate,
rate of motion in RA and dec (right now, you just get total motion
plus the position angle), and a few others people have asked for.
If you've ever used JPL's _Horizons_ system
(
http://ssd.jpl.nasa.gov/cgi-bin/eph ), you may have seen that it
provides a huge list of possible ephemeris quantities. Most are
also provided in Guide... but there are a few items I can grab from
that list.
I see what you mean about clicking on a trail and then being able
to get the date/time resulting from that click... I'll have to think
about this one a bit; I can see some different ways that it could
be done. It would be especially useful when one is searching for
conjunctions/occultations.
"...And now I can see only 18 sep 2003 G8 version from the main
Project Pluto site." This is true. The December update is a "test"
update, provided at
http://www.projectpluto.com/new.htm
-- Bill