Solar and Lunar Eclipse JS Model DocumentsThis material has 4 associated documents. Select a document title to view a document's information. Main DocumentSolar and Lunar Eclipse JS Model
written by
Wolfgang Christian, Todd Timberlake, and Mario Belloni The Solar and Lunar Eclipse JavaScript Model simulates the occurrences of solar and lunar eclipses. Moon's orbital inclination of 5.145 degrees with respect to the ecliptic (the Earth-Sun orbital plane) is what is responsible for solar and lunar eclipses not occurring every month. In addition, the orbital plane of Moon precesses every 8.85 years, the so-called precession of the apsides. The inclination and the motion of Moon and Earth are depicted (the size of Sun, Earth, and Moon and the size of Moon's orbit are not shown to scale). The illuminated sides of Earth and Moon and the regions of possible eclipses (in yellow and green) are also depicted. In the Sky View, the motion of Sun and Moon across the sky (+/- 7 degrees from the ecliptic) are shown. Moon's phase is shown and solar and lunar eclipses can occur on the ecliptic when Earth, Sun, and Moon line up properly.
Published May 13, 2017
This file has previous versions. Primary DocumentsSolar and Lunar Eclipse Android App (beta)Solar and Lunar Eclipse model packaged as a stand-alone Android App. Requires Android 6 or above and fast processor for 3D WebGL.
Last Modified July 20, 2017
This file has previous versions. Supplemental DocumentsMoon Phases and Eclipses WorksheetA student worksheet for the Phases of the Moon and the Solar and Lunar Eclipses simulations.
Published May 20, 2017
This file is included in the full-text index. Source Code DocumentsSolar and Lunar Eclipse Source CodeJavaScript Easy Java Simulations source code. Requires EJS.
Last Modified December 23, 2020
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