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JSatTrak is a Satellite tracking program written in Java. It allows you to predict the position of any satellite in real time or in the past or future. It uses advanced SGP4/SDP4 algorithms developed by NASA/NORAD to propagate the satellite orbits.
Ciclope Astro is a Web 2.0 application to control an astronomical observatory (telescopes, cameras, domes, etc.). It contains other tools as album (folksonomy & votes), forum, news (RSS), karma system. Developed using the Google Web Toolkit framework.
SPIDR (Space Physics Interactive Data Resource) is a distributed database and application server network, built to select, visualize and model historical space weather data. SPIDR is a web-application and a grid of data mining web-services.
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Java library to calculate heliocentric and geocentric planetary positions. Two types of calculations are supported: a 'fast' version which has an accuracy of about 1 arc second and a 'full' version that implements the full VSOP87 theory.
PulsarHunter is a java based package for pulsar searching. It operates on a number of standard data formats. This package also includes the JReaper graphical candidate selection tool.
GRad is a standalone solar radiation model, programmed in Java. It is capable of the calculation of potential (clear sky) and actual (real sky) irradiance and total irradiation for single and multiple geographical locations.
Note that, while fully functional, this application is currently not developed any further.
JPARSEC is a Java Package of Astronomical Resources for Standard Ephemerides Calculations, focused on accuracy, documentation, 2D/3D charts, realistic planetary rendering, and Astrophysical modeling. For source code visit http://conga.oan.es/~alonso/
Mobile Planet Tracking, lets you track the position of any of the 8 planets in the Solar System, you can specify your current earth position, date and time to get the most approximated values.
Java algorithms to calculate celestial ephemerides, for astronony, and celestial navigation. Also provides the algorithms for DeadReckoning, like calculation of Estimated Altitude and Azimuth.
This J2ME soft has data about Messier objects, galaxies, open and globular clusters and nebulas. Allows you to make an observation plan according to your interests, see Moon Phases of 2008 and Local Sidereal Time and Julian date. nochesky.googlepages.com
gSky Digest is a system tray desktop application that presents astronomy events calculated for your home location. Currently it comes with detailed information about the Sun, the Moon and 7 planets. See Project Web Site for more details.
PaperScope is a graphical tool for exploring the data holdings of the Astrophysics Data System (http://adsabs.harvard.edu/). It enables the user to explore the relationships between Astrophysics papers and locate papers of research interest.
Jaude is "Java pour les Astronomes Utilisateurs de Detecteurs Electroniques". Jaude is Eclipse RCP and plugin based. So it will provide an Eclipse interface for JSky library (http://archive.eso.org/JSky/).
Gridder is a group of portlets that simplify the use and administration of grid services. Especially for job submission management. Gridder also extends and documents the functionality of the OGCE Bundle. It is plenty of useful documentation.
MobileStarChart is a MIDP1.0/2.0 midlet for Java-enabled mobile/cell phones or handheld device. It simulates whole sky at any point on earth with constellations, stars up to 6 mag, solar systems and some other celestial objects.
AstroWeka is a set of extentions to Weka, a popular data mining program, which which allows it to work directly with astronomical data in the Virtual Observatory.
jFITS is a Java Swing based application and applet for quickly viewing and performing simple operations on astronomical FITS formatted CCD imaging data.