XEphem is an interactive astronomy program for all UNIX platforms, written and maintained by Elwood Downey over more than thirty years 1990–2021 and now generously released under the MIT License.
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4.2.018 Feb 2024 21:21
minor feature:
Elwood himself has contributed a new option that lets you switch XEphem from giving your telescope J2000 coordinates to giving it equinox-of-date coordinates.
Sky View: the mouse wheel now zooms the view in and out.
Sky View: DSS image download has been fixed by upgrading to HTTPS, and the window should no longer awkwardly resize once the image arrives.
Data Download: added the URL of the Celestrak visual.txt file.
Data Download: replaced ftp.lowell.edu with modern HTTPS.
Data Field Stars: François Meyer added support for the ucac5 catalog.
The precession formula has been updated to the one from the 2000 Astronomical Almanac.
A couple of compilation problems on modern Mac machines have been fixed.
XEphem now uses more modern SSL setup routines if the code detects it s being compiled against OpenSSL 1.1.
Closing the INDI window with your window manager s Close button no longer crashes XEphem.
All references to celestrak.com have been changed to their new hostname celestrak.org .
A few other small fixes.