v3.3 [Apr 3, 2016]
Improved the Edit / Import Objects... command to allow the filtering of asteroid and comet tables to show just the ones that were discovered in a particular year.
Improved the View / Show All / MOIDs... and View / Show Selected / MOIDs... commands to include parabolic, hyperbolic, and anti-hyperbolic orbits, as well as orbits that don't share a common focus.
Added the jupiter masses and jupiter radii units.
Improved the accuracy of ephemeris table calculations with Light-Time Correction in the Tools / Generate Ephemeris... command.
Made evolution with general relativity slightly more accurate and slightly faster.
Made many improvements to the sample simulations.
Various minor bug fixes and improvements.
v3.0 [Oct 25, 2014]
Version 3.0.6 - 24th June 2015
Version 3.0.6 of AstroGrav is an upgrade containing minor improvements and bug fixes. This information is intended for existing users who are already familiar with AstroGrav and want to quickly find out about the main changes. This is a free upgrade for customers who have already purchased an AstroGrav 2 or AstroGrav 3 license, so that all you need to do is download Version 3.0.6 and use it in place of your old version. If you have any problems with this new version, please don't hesitate to contact us so that we can help you out.
Version 3.0.6 of AstroGrav has the following new and improved features.
Evolution Improvements
Other Improvements
Evolution Improvements
Version 3.0.6 of AstroGrav includes the following improvements to the evolution algorithm.
Evolution has been greatly speeded up in cases where small time steps are being used.
Evolution performance has been improved in most simulations.
A bug has been fixed that caused AstroGrav to crash when evolving a large number of overlapping objects with bouncing collisions.
Several other minor improvements have been made to the handling of bouncing collisions.
Other Improvements
Version 3.0.6 of AstroGrav also has many other minor improvements and bug fixes, including the following.
A bug has been fixed that caused an unwanted automatic change to the fixed point after accepting a 'Do you want to detach your viewpoint?' question in a view window.
A memory leak has been fixed that could cause AstroGrav to run short of memory after starting and stopping evolution a very large number of times.
v2.2 [Nov 28, 2013]
View Window Improvements
- The View / Show All / Data command has been added to display the distances, speeds, magnitudes, and phases of the objects when desired.
- The View / Show All / Nodes command has been added to display the ascending nodes and descending nodes of the objects when desired.
- The View / Show All / Apsides command has been added to display the pericenters and apocenters of the objects when desired.
- All three of the new commands in the View / Show All menu have had corresponding tool buttons added to the tool palette. The tool buttons for the little used View / Show All / Objects, View / Show All / Velocities, and View / Show All / Accelerations commands have been removed to make way for the three new tool buttons. These commands are still available in the menu if they are needed.
- The View / Show Selected menu has been modified in exactly the same way, with the addition of three new commands and their corresponding tool buttons.
- The View / Fix and View / View From commands have been added to provide alternative ways of fixing an object and viewing from an object. These two commands are primarily intended to make AstroGrav easier for beginners to use, and are unlikely to be of interest to experienced users.
Object Import Improvements
- It includes a significant improvement to the Edit / Import Objects... command. There is now a small button in the top-right corner of tables that makes it much easier to scroll to a particular part of a very large table. This button has an Row scroller icon icon and is positioned to the right of the column headers, immediately above the vertical scroll bar. When you click on this button, a small dialog is displayed in which you can type what you are looking for in the column that the table is currently sorted on. If you OK this dialog, AstroGrav will immediately scroll to the part of the table containing whatever you typed. While this is mainly intended for use in very large tables, it is also available in any other table that has a vertical scroll bar.
Other Improvements
- A bug has been fixed that caused the buttons in a tool palette to be left aligned instead of evenly spaced.
- The terms peri and ap have been changed to pericenter and apocenter, both in the user interface and the documentation.
- Several of the tool icons have been improved.
- The documentation and tutorial have been updated to cover the recent improvements.
v1.9 [Apr 8, 2011]
It is an upgrade containing minor improvements and bug fixes.
It includes the display of the (x, y, z) coordinates of the viewpoint on the status bar, when the viewpoint is not within an object. The position unit is used to display the x, y, and z values. As in earlier versions of AstroGrav, the name of the object is displayed here when the viewpoint is within an object.
It includes a correction to the way in which angles are formatted when the angle unit is degrees : minutes or degrees : minutes : seconds. Earlier versions sometimes displayed 60 as the number of minutes or seconds. This has now been corrected so that these angles now display as expected.
It also has several other minor improvements, including the following.
- A bug has been fixed that prevented the File / Import... command from working.
- A bug has been fixed that prevented the Edit / Paste command from working.
- A bug has been fixed that caused a new or duplicate view window to initially appear blank on some computers.
- A bug has been fixed that caused the newly visible part of a maximized view window to initially appear blank on some computers.
- A bug has been fixed that prevented the angle cursor from being displayed on a view window when specifying an angle to display.
- Number formatting has been improved to show trailing zeros when appropriate.
