written by Mario Belloni and Kristen Thompson

The Star Motion on the Horizon JS Package displays how the appearance and motion of the stars near and around the northern, southern, eastern, and western horizon change over the course of hours. The specific latitude modeled can be changed with a slider. The north celestial pole (NCP) is shown in yellow and star trails are shown in white.  

The Star Motion on the Horizon JS Package was developed using the Easy JavaScript Simulations (EjS) version 6.  It is distributed as a ready-to-run html page and requires only a browser with JavaScript support.  This model runs on tablets.

• Download ejss_model_star_horizon_package.zip - 835kb Compressed File

Published July 26, 2019
Last Modified July 26, 2019

This file has previous versions.

The ePub version of the Star Motion on the Horizon JS Package.

• Download ejss_model_horizon_package.epub - 327kb EPub Document

Released under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 license.

Published July 25, 2019
Last Modified July 27, 2019

This file has previous versions.

Source code for the Star Motion on the Horizon JS Package.

• Download ejss_src_horizon_package_compadre_simulations.zip - 29kb Compressed File

Released under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 license.

Published July 25, 2019
Last Modified July 26, 2019

This file has previous versions.