If you want to learn more about Astronomy, this program also has an on-line extensive Help.

It exports the results to .html, .csv (spreadsheet) and .txt formats.

Version 2 also includes an on-line automatic update feature and a basic sky simulator.

Includes a full featured Planetarium - yes, in .xls format and with all expected features: sky simulation; 3D solar system orrey, extended ephemerides tables for the planets and Moon (including a graph comparing it's apparent size etc...), graph depicting the visibility of the planets along a 24 hour period, ephemerides for all the Messier objects, Sun ephemerides with graphs, Jovian system simulation graphs, graphical simulation of Saturn, it's rings and satellites, day and night progression over an Earth map and a lot of miscellaneous calculations, including on the telescope optical parameters and CCD sides.

Note: requires MS Excel or compatible (the macros must be enabled).

Alcyone Ephemeris is an accurate and fast astronomical ephemeris calculator covering the period 3000 BC to AD 3000. It calculates heliocentric, geocentric, and topocentric positions of the Sun (Earth), Moon, planets, minor planets, comets and fixed stars in ecliptical, equatorial, and horizontal coordinates (including angular differences between two bodies), with optional corrections for parallax and refraction; rectangular coordinates, velocity, apparent diameter, magnitude, phase, lunar libration, orbital elements, differences for all of these, and more. In addition Alcyone Ephemeris offers a wealth of functionality: star chart generation, 3D-visualization of heliocentric and planetocentric orbits, plotting ephemeris data (as a function of time or in a parametric plot), searching for specific values, data export (HTML, Excel, Text, CSV, XML), printing, and (PDF-/HTML-/RTF-) report generation. Access to the complete Bright Star Catalogue, calendar conversion, and an astronomical event calculator are available.
The ephemeris calculation is based upon Steve Moshier's analytical ephemeris using trigonometric expansions for the earth and planets and the lunar ephemeris ELP2000-85 of Chapront-Touzé and Chapront for the moon, both adjusted to Jet Propulsion Laboratory's DE404. There are further adjustments in Alcyone Ephemeris, some optional, to JPL's more recent DE406, the most accurate long-term ephemeris. Alcyone Ephemeris is fast. With an Athlon XP 2000+ processor, 100 calculations of geocentric longitude, latitude, and distance for the sun, moon, and all planets take about 2 seconds.
A comprehensive documentation includes tabular and graphic comparisons of calculations with HORIZONS Ephemeris generator . Alcyone Ephemeris is shareware and runs under Windows 98/ME/2000/XP/Vista.

Available in two versions: Light (the calculations for the positions of the celestial bodies are performed to relatively low precision (0" .1 for the planets, the Sun and the Moon for the actual date. The database of the asteroids contains 1000 objects only) and Complete (calculations for the positions of the greatest bodies of the solar system performed to the maximum precision. The database of the asteroids contains over 100.000 objects, while that of the stars reaches mag. 10 - 250.000 stars can be displayed).

You can use it when you want:
- to list all observable solar system objects you can add to your observing plan,
- to identify the moving object at your CCD image.

The output is sent to a plain text file.

Includes a feature to automatically download the latest elements from the Lowell Observatory (astorb.dat, for asteroids) and the Central Bureau for Astronomical Telegrams (Soft12Cmt.txt for comets).

This application uses astronomical library libastro - developed by Elwood C. Downey as a part of XEphem.

From Asteroid Database up to Variable Stars, from Jupiter moon events up to Occultations you find everything you need for computing ephemerides for your observations. More than 100 free configurable ephemeris values can be computed easily, more than the biggest almanach could provide.

Additional files, available in its homepage, offer increased accuracy.