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 Solar Eclipse Calculator - calculates the local circumstances of all solar 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 Solar 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. Alcyone Astronomical Tables - a collection of astronomical data in electronic form. It provides detailed information on various astronomical phenomena (conjunctions with the Sun, planetary conjunctions, oppositions, stations, greatest eleongations, lunar phases, equinoxes and solstices, passages of aphelia and perihelia, solar and lunar eclipses) covering the period 3000 BC (2000 BC) to AD 3000. Alcyone Astrononomical Tables can be used as a 'stand-alone program' or as an addition to Alcyone Ephemeris.
Software
Alcyone Ephemeris
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
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Alcyone Solar Eclipse Calculator
Alcyone Solar Eclipse Calculator - Short Description
This website provides astronomical software: Alcyone Solar Eclipse Calculator - calculates the local circumstances of all solar 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 Solar 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.
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Alcyone Astronomical Tables
Alcyone Astronomical Tables - a collection of astronomical data in electronic form
This website provides astronomical software: Alcyone Astronomical Tables - a collection of astronomical data in electronic form. It provides detailed information on various astronomical phenomena (conjunctions with the Sun, planetary conjunctions, oppositions, stations, greatest eleongations, lunar phases, equinoxes and solstices, passages of aphelia and perihelia, solar and lunar eclipses) covering the period 3000 BC (2000 BC) to AD 3000. Alcyone Astrononomical Tables can be used as a 'stand-alone program' or as an addition to Alcyone Ephemeris
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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.
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Bright Star Catalogue Viewer
The Bright Star Catalogue contains 9110 entries of all stars brighter than magnitude 6.5 (the naked eye visible stars). It's one of the most widely used star catalogues and provides detailed basic astronomical and astrophysical data.
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