Solar System 2D - v4.4.1

View settings :

• To move, keep the mouse pressed (selection click) and move it.

• To zoom in and out, use the scroll wheel.

• To center the (un)zoom on an object, select it and follow the same principle mentioned before.
• Two buttons can be used for fast (un)zooming, the one with a magnifying glass containing a plus symbol allows zooming in and the one with a magnifying glass containing a minus symbol allows zooming out. ( and )

• A cursor named “t” allows varying the value of the instant t.
• A boolean named “define time” opens an interface with which you can define a date that will vary the value of time t according to the input. It is enough to enter the values according to the seconds, minutes, hours, days and year then to click on the button to confirm. It is possible to keep the values in memory with the boolean checked “keep values”.
• To accelerate time, a text field under the name “Acceleration of time (in powers of 10)” allows you to accelerate or slow down the speed of time, it should be noted that the possible values must have a maximum of one decimal place and be contained in the interval from -1 to 10 and that also, this acceleration is done according to powers of 10.
• It is possible to stop and then restart the time with the “start time” Boolean.

• The boolean “show satellites” allows displaying or not all the satellites.
• The boolean “real size objects” allows to display the real size of the planets (according to the average radius). This feature is only available for the main planets, some of their satellites and the Sun.

• The unit of measurement of distance in AU (astronomical unit)
• The date defined in the project is an informative data on the evolution of the stars in relation to each other and does not follow the real model. That is to say, a star will have a certain position at such date in the project and that in reality this star did not necessarily have this position at the same date in the real world.
• The trajectory of the James Webb Telescope and the point representing it are false, they only represent the location and trajectory of the Lagrange point number two according to the Earth and the Sun. It just allows locating an area where it would be.
• Project created with the classic version of Geogebra 5.
• In case of problems with the system, click on the icon at the top left of the screen of the screen with two arrows to reload the activity.
• It is not recommended to keep the display of the satellites or the real size of It is not recommended to keep the display of the satellites or the real size of the stars activated when changing the view on the graph, because it may slow down the application/project.

• Small-Body Database Lookup, Jet Propulsion Laboratory – California Institute of Technology.
• Minor Planet Center, International Astronomical Union.
• Planetary Data System, National Aeronautics and Space Administration.

Colin Bossu