Astronomical Calculations - These pages are for providing formulae and programs to calculate the approximate positions of solar system objects. I would welcome feedback on these pages, and any hints or tips you have accumulated. I can be contacted at keith@xylem.demon.co.uk. My main focus will be on simple calculations which can be programmed on a cheap programmable calculator. Planetarium Software 2 - Thank you Bill Arnett! XEphem - The scientific-grade interactive astronomical ephemeris software package o Aviation Formulary   by Ed Williams o Astronomical Software on Linux o Astronomy Software Servers o Geodetic Location o Linux Astronomy HOWTO - This document shares tips and resources to utilize Linux solutions in the pursuit of Astronomy o Martindale's Online Calculators o Modern High-Accuracy Ephemerides (for use by professionals) o Orbital Elements   o Radiometry and Photometry in Astronomy   by Paul Schlyter o U.S. Naval Observatory - Data Services     © Copyright 2007 - Samuel J. Wormley   by swormley1@mchsi.com