Alcyone Astronomical Software - ephemeris software, astronomical tables, solar eclipse calculator


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    • Alcyone Ephemeris

      • Alcyone Ephemeris - an accurate and fast astronomical ephemeris calculator covering the period 3000 BC to AD 3000

        This website provides astronomical software: Alcyone Ephemeris - an accurate and fast astronomical ephemeris calculator covering the period 3000 BC to AD 3000. It calculates heliocentric, geocentric, and topocentric ephemeris data of the Sun (Earth), planets, 18 natural satellites, and small bodies (minor planets and comets) in ecliptical, equatorial, and horizontal coordinates, with optional corrections for parallax and refraction; rectangular coordinates, velocity, apparent diameter, magnitude, phase, lunar libration, 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, ephemeris data export (Excel, HTML, XML, Text), scripting to write programs for more complex computations, and printing. Access to the complete Bright Star Catalogue, a calendar conversion tool, 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 to JPL's more recent DE406, the most accurate long-term ephemeris

      • Alcyone Ephemeris - List of Functions

      • Alcyone Ephemeris - Screenshots

      • Alcyone Ephemeris - Small Body Data Files

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    • Alcyone Lunar Calculator

      • Alcyone Lunar Calculator - Short Description

        Alcyone Lunar Calculator (ALC) provides detailed astronomical information on the Moon. It calculates accurate geocentric or topocentric positional and physical ephemerides, times and circumstances of lunar events (e.g. lunar phases, perigee, apogee, passages through the nodes, first and last lunar visibility, occultations, eclipses), orbital parameters and more covering the time period AD 1200 to AD 2100. Lunar topographic information are available by use of a high-resolution interactive image map based on images taken by NASA's Lunar Reconnaissance Orbiter Camera (LROC). In addition ALC offers graphical capabilities for data visualization in different kinds of printable and exportable 2D- and 3D-diagrams and projections (e.g. 3D-orbit diagram, libration diagram, visibility diagram, elevation maps).

      • Alcyone Lunar Calculator - Program Modules

      • Alcyone Lunar Calculator - Screenshots

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    • Alcyone Eclipse Calculator

      • Alcyone Eclipse Calculator - Short Description

        This website provides astronomical software: Alcyone Eclipse Calculator - calculates the local circumstances of all solar and lunar eclipses that occur(ed) in the time range between -1999 (2000 B.C) and AD 3000. The local circumstances are presented as eclipse maps and tables for a list of locations. Alcyone Eclipse Calculator can be used as a 'stand-alone application' or as an addition to Alcyone Ephemeris. The calculation of the local circumstances of solar eclipses is based upon the data from the Five Millenium Canon of Solar Eclipses -1999 to 3000 (Fred Espenak, NASA's GSFC) with Besselian Elements provided by Jean Meuus. The calculation of the local circumstances of lunar eclipses is based upon the data from the Five Millenium Canon of Lunar Eclipses -1999 to 3000 (Fred Espenak, NASA's GSFC).

      • Alcyone Eclipse Calculator - Screenshots

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    • Alcyone Astronomical Tables

    • Planetary, Stellar and Lunar Visibility

      • Planetary, Stellar and Lunar Visibility - Short Description

        Planetary, Lunar, and Stellar Visibility (successor to Planet's Visibility 2.0) presents a 3-color diagram that shows when a planet, a star, the moon or the sun is visible during any year from 3000 BC to AD 6000 at any location on the earth. The vertical axis marks the months of the year, the horizontal axis marks the hours of the day. The three colors create a contour map effect and show whether the body is under the horizon (black) and invisible, above the horizon with the sun (light color) and invisible, above the horizon without the sun (shaded color) and so possibly visible. The times of sunrise and sunset and when the sun reaches specified altitudes above or below the horizon can be shown as curves on the diagrams. By moving the mouse over the diagram, the date and time along with the object's altitude, azimuth, and magnitude, or the phase of the moon, are displayed. In addition, Planetary, Lunar, and Stellar Visibility computes and tabulates the dates of visibility phenomena: for planets and stars first and last visibility, acronychal rising and cosmical setting; for the moon first and last visibility, and the tables provide much supplementary information. These phenomena are very useful for historical purposes. Since the computation of visibility phenomena is complex and uncertain, alternate methods are provided and parameters can be altered by the user to find what appear to be the best results. There are also diagrams of solar and lunar eclipses, of the rotation, inclination, illumination, and apparent size of the bodies, and of Jupiter's satellites.

      • Planetary, Stellar and Lunar Visibility - List of Functions

      • Planetary, Lunar and Stellar Visibility Screenshots

      • Documentation

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    • Bright Star Catalogue Viewer

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