Mobile Jupiter is a J2ME application to plot the relative positions of the galilean moons of Jupiter in a cellphone using Java.

Mobile Jupiter also show the shadow of the moons over Jupiter's disk. Zoom in and out, screen rotation, screen orientation and  time manipulation controls are provided.

Feel free to contribute with the program using the website:

http://code.google.com/p/mobilejupiter/

An user guide is available at:

http://code.google.com/p/mobilejupiter/wiki/WikiEnglishPage

Newer versions may be released before at the above site. Check it out.

By using your Android phone's orientation sensors, we can show you a star map for your location. Explore planets, stars, constellations, and more! Learn the name and location of space objects and impress your friends.

Sideralis is a free sky chart for mobile phones supporting java and MIDP2.0, CLDC1.1.

• A lot of different objects:

  • More than 800 stars.
  • 5 planets: Mars, Venus, Mercury, Jupiter and Saturn.
  • Sun and Moon.
• 2 different views :

  • Horizontal view.
  • Zenith view.
• Information on all objects:

  • Name.
  • Magnitude
  • Distance
  • Azimuth
  • Height
• Current time or any time can be choosen.
• Selection of location by either entering latitude and longitude, by selecting a city among than 50 cities or by selection on a globe.
• Small dictionnary available giving some interesting informations about universe.
• Real time calculation - No network connection needed.
• Nice and simple user interface.

A MIDP1.0/2.0 midlet for most Java-enabled mobile phones (cell phones). Simulates whole sky at any point on earth with constellations, stars up to 6 mag, solar systems and some other celestial objects. It may be a useful tool when you are bathed under star lights with your cell phone in the pocket. This also gives you a serious and detailed guide of current sky above your head at your location.

Features:

Both Horizontal and Equatorial Coordinate Display of whole sky. 88 constellation names, 83 constellation stick figures, 10 messiers and stars up to mag 6.0 (5080 stars, and 50 common star names).
• All 8 planets plus Sun and Moon is calculated, information is displayed respectively on a seperate screen.
• Location and Date/Time can be set at startup.
• Applicable for any location on earth given a specific time.
• Auto update of celestial object positions.
• Sophisticated display control over all information on screen.
• Support English and Chinese display of celestial object name.
• Tiny 150KB compressed jar file. (All 6 mag stars insides, for version 0.08)

• The scopes aperture in mm
• The scopes focal length in mm
• The scopes max power
• The scopes min power
• The scopes resolving power
• The scopes exit pupil for an eyepiece
• The scopes power for an eyepiece
• The scopes actual field of view for an eyepiece
• As an added bonus you can compare the actual FOV of your selection to a bitmap of Andromeda (the image pans).

Features include:
. All stars brighter than magnitude 4.0 clearly visible in a graphic rendering of the sky. Dimmer stars needed to complete the constellation figures are also included, with an accurate reproduction of each star's color.
. Over 100 common star names, including all the standard navigational stars.
. Accurate calculations of the positions of the planets, Sun and the Moon for your location.
. An accurate representation of the current phase of the Moon.
. An intuitive way to determine what is in your sky currently, regardless of the size of your cell phone's screen.
. Wireless network access not required! If you're lucky enough to find yourself at a very remote dark sky site, all of picoSky features will still work. picoSky has completely self contained databases and harnesses the computational power of your cell phone to create a graphical representation of the sky.
. Geometric figures and names for all 88 constellations.
. Over 250 of the brightest and most popular deep sky objects, with each type (globular cluster, open cluster, galaxy, nebula, planetary nebula, and asterism) easily identifiable. If available its common name is also included.
. Search for and find any star, constellation or deep sky object in picoSky's databases and obtain detailed information for that object. A quickly accessible menu also gives you detailed information about the Sun, Moon and each planet. For example: Distance from the Earth and Sun for the planets, Moon, and Sun; Rise, Transit, and Set times ; Right Ascension and Declination coordinates ; Altitude and Azimuth coordinates ; The ability to view the object if above the horizon.
. View what will be or what was in the sky for any given date and time within thirty years from the present.
. Access to a database containing latitudinal and longitudinal coordinates for every telephone area code in the U.S. for simple location selection. Or for more precision, enter your exact location in degrees, minutes and seconds of latitude and longitude.