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AstroGrav for Mac 3.6

AstroGrav is a full-featured, high precision solar system simulator that calculates the gravitational interactions between all astronomical bodies, so that the motions of asteroids and comets are simulated much more accurately than with planetarium applications. The effects of general relativity and radiation pressure can be taken into account, and superb interactive 3D viewing allows you to easily rotate and zoom your view while the solar system evolves.

The AstroGrav software has a huge range of features and viewing options, including views from space or any object, planetarium-style views from any location on Earth, multiple views animated simultaneously, dynamically calculated orbits and trajectories, comprehensive tabular data, and simulation time steps from a fraction of a second to thousands of years. Constellations and over 100,000 background stars are included, with comprehensive data for every star. Several different celestial coordinate grids and a wide range of physical units are available, and editing facilities allow you to create new objects manually, or import from hundreds of thousands of asteroids and comets.

Because it calculates the motions of bodies from their gravitational interactions, AstroGrav is not restricted to just the solar system. Any situation in which gravity is the only significant force can be simulated, and the illustrative sample files that are included with AstroGrav include many examples such as exoplanet systems, protoplanets that evolve into planetary systems, rubble piles and their interactions with massive bodies, complex star systems, and even projectiles and bouncing balls.

AstroGrav is ideal for astronomers, astrophysicists, researchers, teachers, educationalists, and students, and comes complete with a tutorial and full documentation. A fully functional 15 day trial version is available for download and evaluation.

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History updates (Complete changelogs since the listing on this site)

3.6 [04-15-18]

Enhanced the 'Evolve To...' command to allow evolution to specific events in solar system simulations. Corrected a fault that caused the IAU's Minor Planet Center import tables to appear empty in the 'Import Objects...' command. Various minor bug fixes and improvements.

Other versions : 3.5.1 3.5 3.4.3 3.4.2 3.4.1 3.4 3.3.3 3.3.2 3.3.1 3.3 3.2.1 3.2 3.1.1 3.1 3.0.6 3.0.5 3.0.4 3.0.3 3.0.2 3.0.1 3.0 2.2.3 2.2.2 2.2.1 2.2 2.1.2 2.1 2.0.2 2.0.1 2.0 1.9.4 1.9.3 1.9.2 1.9.1 1.9 1.8.4 1.8.3 1.8.2 1.8.1 1.8 1.7.2 1.7.1 1.7 1.6.2

v3.5.1 [12-31-17]

Corrected faults in the evolution algorithm. Changed the names of background stars to conform to the IAU Stellar Name Catalogue. Displayed only first magnitude background star names in upper case. Eliminated some rounding errors. Various minor bug fixes and improvements.

v3.5 [12-12-17]

Improved the evolution algorithm, import of asteroids and comets, handling of tables, and display of object histories. Added a new command that removes objects in such a way as to leave the orbits of other objects unchanged. Many performance improvements. Various minor bug fixes and improvements.

v3.4.3 [09-07-17]

Corrected a serious fault that prevented the 'Edit/Import Objects...' command from working with the JPL options. Made minor improvements to the evolution algorithm. Increased the number of items in the list of recently used simulations from 10 to 20. Various minor bug fixes and improvements.

v3.4.2 [08-04-17]

Corrected a serious fault that could cause AstroGrav to freeze during startup, making it unusable. Corrected a fault that caused clicking on a table header for sorting to sometimes be ignored. Various minor bug fixes and improvements.

v3.4.1 [05-21-17]

Corrected a fault that caused JPL asteroid and comet import tables to appear empty. Improved the display of high magnification celestial grids. Made searching on background stars faster and more flexible. Added two new units. Improved evolution performance. Various minor bug fixes and improvements.

v3.4 [12-20-16]

Expanded the choice of object types. Added the display of angles between objects. Added a text export command. Improved ephemeris generation. Added celestial coordinates data. Enhanced the handling of background stars. Improved the sample simulations. Various minor bug fixes and improvements.

v3.3.3 [08-01-16]

Added filtering by year to asteroid and comet tables. Improved the display of minimum orbit intersection distances (MOIDs). Added jupiter masses and jupiter radii units. Improved the accuracy of ephemeris table calculations. Improved the sample simulations. Various minor bug fixes and improvements.

v3.3.2 [04-26-16]

Made significant improvements to several different commands. Corrected faults that could cause the miscalculation of distances and minimum orbit intersection distances (MOIDs). Made luminosities editable for all particle types. Improved trajectory drawing. Various minor bug fixes and improvements.

v3.3.1 [04-04-16]

Added 'Export' and 'Help' buttons to all tables. Increased the number of lines in table headers from 2 to 3. Added the phase of the target object to the ephemeris generator. Added keyboard shortcuts to 25 commands. Improved the 'New Horizons' simulation. Various minor bug fixes and improvements.

v3.3 [03-07-16]

Added commands to display the distances and MOIDs between objects. Added a 'Potentially Hazardous' filter to asteroid/comet tables. Added several new filters to comet tables. Improved movie-making. Added 40 astronomical observatories to the Earth locations. Various minor bug fixes and improvements.

v3.2.1 [12-25-15]

Enhanced the 'Edit/Find...' command to allow searching for background stars and constellations in solar system simulations. Improved the error messages displayed when attempting to read/write without appropriate permissions. Improved many dialog windows. Various minor bug fixes and improvements.

v3.2 [11-28-15]

Made simulations more accurate, allow animated or non-animated evolution, and optionally take into account the effect of radiation pressure. Made the 'Import Objects...' command faster, more accurate, and easier to use. Improved the sample simulations. Various minor bug fixes and improvements.

v3.1.1 [09-30-15]

Fixed a fault that could cause the 'Evolve To...' and 'Date/Time...' commands to fail for users in the western hemisphere (the Americas). Fixed the 'document modified' indicator on windows. Fixed the display of accented characters in locations. Various minor bug fixes and improvements.

v3.1 [09-19-15]

Added a new menu with tools for changing reference frames, taking snapshots, creating movies, and generating ephemerides. Removed the requirement for Java to be installed. Made the 'New Horizons' sample simulation much more accurate. Various minor bug fixes and improvements.

v3.0.6 [06-28-15]

Greatly speeded up evolution in cases where small time steps are being used. Improved evolution performance in most simulations. Made several improvements to the handling of bouncing collisions. Various minor bug fixes and improvements.

v3.0.5 [05-09-15]

Made the evolution algorithm much more accurate when there is a dominant object (eg, in exoplanet simulations). Speeded up evolution in many simulations. Improved the sample simulations to have more accurate masses for the main solar system objects. Various minor bug fixes and improvements.

v3.0.4 [03-21-15]

Added help buttons to the dialog windows of the more complex commands. Added the 'View / Selections...' command. Added the time zone or time unit to the dates and times shown on status bars. Improved the 'Edit / Import Objects...' command. Various minor bug fixes and improvements.

v3.0.3 [02-15-15]

Made several improvements to the editing features. Changed the value used for the astronomical unit to 149597870700.0 meters. Corrected evolution faults involving collisions. Added a color randomizer to the 'Edit / Split Object...' command. Various minor bug fixes and improvements.

v3.0.2 [12-20-14]

Added the 'Edit/Split Object...' command to allow the conversion of an asteroid, comet, or other object into a rubble pile. Greatly improved performance when evolving simulations that contain rubble piles. Made several improvements to the sample simulations. Various minor bug fixes and improvements.

v3.0.1 [10-30-14]

Corrected a fault that prevented licenses from being registered on Mac OS X 10.9 (Mavericks). Corrected a fault that could prevent a simulation from evolving when a comet or asteroid was being simulated as a rubble pile. Various minor bug fixes and improvements.

v3.0 [10-02-14]

Added the ability to view from locations on the Earth's surface in order to give the software planetarium-style capabilities in solar system simulations. Made major improvements to the way that bouncing collisions are handled during evolution. Various minor bug fixes and improvements.

v2.2.3 [06-13-14]

Added commands to display the distances, speeds, magnitudes, phases, ascending nodes, descending nodes, pericenters, and apocenters of objects. Added commands for fixing and viewing from objects. Made navigating very large tables much easier. Various minor bug fixes and improvements.

v2.2.2 [05-12-14]

Greatly improved the display of trajectories and histories. Combined the 'Add Object...' and 'Add Child...' commands into a single 'Add Object...' command. Improved the naming convention used for comets. Made several improvements to the evolution algorithm. Various minor bug fixes and improvements.

v2.2.1 [02-19-14]

Made it easy to import particular categories of comets and asteroids. Enhanced the 'View/Show/Barycenters' command to show all family barycenters. Improved the appearance of the ecliptic and equatorial grids. Added the 'Asteroid Apophis' sample simulation. Various minor bug fixes and improvements.

v2.2 [11-28-13]

Made major improvements to simulation evolution, making it easier to use, and improving both speed and accuracy. Improved the handling of the evolution mass threshold. Added many recently discovered objects to the solar system sample simulations. Various minor bug fixes and improvements.

v2.1.2 [08-30-13]

Changed the non-standard 'Julian Year' date unit to the standard 'Julian Epoch' date unit. Changed the 'Year' time unit from 365.2424 days (vernal equinox year) to 365.25 days (Julian year). Corrected several minor faults on view windows. Various minor bug fixes and improvements.

v2.1 [07-01-13]

Made many improvements and bug fixes to simulation evolution. Improved the calculation of solar system orbital elements. Corrected several faults that could occur when importing objects into solar system simulations using the 'Edit / Import...' command. Various minor bug fixes and improvements.

v2.0.2 [12-24-12]

Made many improvements to view windows, particularly to the display of ecliptic grids and equatorial grids. Made improvements to the asteroid and comet tables that are displayed with the 'Edit / Import...' command. Added the 'Tau Ceti' sample simulation. Various minor bug fixes and improvements.

v2.0.1 [11-12-12]

Improved the evolution algorithm to run faster on multi-processor and multi-core computers, correct a fault with the 'General Relativity' option, and improve collision handling. Corrected the display of background star names. Improved the sample simulations. Various minor bug fixes and improvements.

v2.0 [08-07-12]

Added a completely new evolution algorithm that is much more accurate than the evolution algorithm used in previous versions, and which contains several new settings. Added a large number of new commands, particularly in solar system simulations. Various minor bug fixes and improvements.

v1.9.4 [12-10-11]

Added the 'View/Show/Barycenter' and 'View/Show/Grayscale' commands. Made several improvements to the sample simulations. Corrected a fault that caused 'Evolve/Evolve To...' to evolve to the wrong time when the time step was changed during evolution. Various minor bug fixes and improvements.

v1.9.3 [10-23-11]

Changed the 'Units' and 'Notes' windows so that they can be left open indefinitely. Made several improvements to the sample simulations. Corrected a fault that could cause the significant digits of position and speed quantities to get reduced to 4. Various minor bug fixes and improvements.

v1.9.2 [07-04-11]

Added the display of a viewpoint's (x, y, z) coordinates to the status bar of a view window. Corrected a fault that could cause angles to be incorrectly formatted. Corrected a fault that prevented the 'File/Import...' and 'Edit/Paste' commands from working. Various minor bug fixes and improvements.

v1.9.1 [04-01-11]

Corrected a serious fault that made version 1.9 unusable for a small proportion of users. Added the symbols for elements (a, e, i, omega, etc) to the appropriate windows. Added separators to the lists of units in popup menus to separate units into groups. Various minor bug fixes and improvements.

v1.9 [03-18-11]

Made several corrections to minor faults in the evolution algorithm, and improved performance by about 15 percent. Made many improvements to the sample simulations. Made many improvements to the way units are handled. Corrected a fault with table sorting. Various minor bug fixes and improvements.

v1.8.4 [11-07-10]

Many improvements to the sample simulations. Added a 'beep when finished' checkbox to the 'Evolve/Evolve To...' dialog. Corrected faults when displaying highly eccentric orbits. Improved the algorithm used to calculate the magnitude of a non-luminous body. Various minor bug fixes and improvements.

v1.8.3 [09-02-10]

Changed the way that columns are shown and hidden in a table. Added a new sample simulation illustrating the system of exoplanets orbiting the star HD 10180. Corrected a fault that could cause AstroGrav to crash on computers with Intel Core i7 processors. Various minor bug fixes and improvements.

v1.8.2 [05-12-10]

Greatly improved the way that orbits are calculated. Improved the handling of units by allowing the easy definition and use of a default selection of units. Made several improvements and corrections to the sample simulations. Various minor bug fixes and improvements.

v1.8.1 [01-07-10]

Speeded up displays of table and view windows. Ensured that a tool palette remains on screen when its owning window is moved, resized, or maximized. Added recent discoveries to the Solar System sample simulations and changed their start date to 01/01/2010. Various minor bug fixes and improvements.

v1.8 [11-25-09]

Added several new commands for manipulating model windows. Made improvements to the handling of date and time units. Made improvements to tool bars and added new tool palettes. Added new preferences for specifying the positions of tool bars and status bars. Various minor bug fixes and improvements.

v1.7.2 [07-02-09]

Added a facility to save and restore family patterns in the 'Edit/New Family...' command. Added two new sample simulations. Corrected a fault that made selecting a large number of objects take too long. Corrected the 'Evolve/Run Backward' keyboard shortcut. Various minor bug fixes and improvements.

v1.7.1 [05-09-09]

Added an object's speed to its label when selected on a model window. Added an object's speed and magnitude to its information popup. Added a preview panel to the color chooser. Corrected a fault that could cause unwanted gaps in some lines on model windows. Various minor bug fixes and improvements.

v1.7 [02-24-09]

Added facilities for selecting multiple objects. Added commands to cut, copy, and paste selections. Improved the commands for deleting and merging objects. Simplified the addition of new objects. Added a new 'Type' field to the physical elements of objects. Various minor bug fixes and improvements.

v1.6.2 [09-12-08]

Improved the way that evolution is indicated on the status line. Corrected a fault that could cause part of an orbit to be drawn incorrectly. Corrected a fault in the calculation of object magnitudes. Significantly speeded up the drawing of model windows. Various minor bug fixes and improvements.

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Predicted future versions and notices:

The doDownload.com constantly monitors the update of all programs, including information from the AstroGrav for Mac 3.6 changelog file, however sometimes it can happen that data are not complete or are outdated.We assume that author continue's to develop 3.7 version with further advanced features, and soon you will be informed. Equally important 4.0 upgrades of the program we will continue to monitor. Full AstroGrav for Mac description has been compared with the overall software database and our algorithm has found the following applications (are showed below).