Hi Masaki,
Hmmmm... I don't think the raw UCAC-2 data (the data that was put on
the three CDs available from USNO) is posted on the Internet. As far as
I know, the only way to get it is on the CDs. These are available at
no cost; you need only e-mail the USNO to request a copy:
http://ad.usno.navy.mil/ucac/
"...To obtain the 3 UCAC2 CDs, please send a short e-mail message
[to
nz@...] with 'request UCAC2' in the subject line and give
your mailing address in themain part of the message. Please use upper
case letters for your name and address in a format directly usable for
mailing labels."
(If this fails, perhaps because USNO has run out of disks, please
let me know. I will arrange a system similar to that for A2.0, where
people can pass disks around and copy them.)
-- Bill