| Version | Change log |
| AstroGrav for Mac OS X 5.2 Jun 20, 2024 |
Enhanced the faint background stars by using Gaia DR3 data instead of Gaia DR2 data, by providing stars down to magnitude 17 instead of magnitude 15, and by including velocities instead always using zero velocities. Made several minor improvements to the Solar System / +Basic sample simulations. Improved several of the Solar System / Comets sample simulations by using the correct absolute magnitudes for the comets, instead of using a default that was often very inaccurate. Added the angular diameter column to ephemeris tables. Corrected a fault that sometimes prevented the Edit / Find... command from working when searching for a background star using its Bayer designation. Added the SLIM, IM-1, and Chang'e 6 landing sites to the list of Moon locations. Various minor bug fixes and improvements. |
| AstroGrav for Mac OS X 5.1 Apr 8, 2024 |
Replaced the eight Trojan asteroid categories with the corresponding eight Co-orbital asteroid categories in the Edit / Import Objects... command, facilitating the study of Trojan, Horseshoe, Transition, and Consistent co-orbital asteroids. Enhanced the Edit / Import Objects... command with the addition of an option to import Earth satellites. Added a new View / Turn Around command, which switches the active view window to view in the opposite direction. Added a new View / Configure Data... command, which allows you to choose which of items of object data to display on a view window. In solar system simulations, enhanced the View / Configure Tracks... command with the addition of longest and shortest time periods, which determine exactly what is displayed on labels. Made searching for background stars with the Edit / Find... command more flexible, by accepting verbose search strings such as 'Hipparcos 37442' and 'Tycho 1373-1766-1'. Various minor bug fixes and improvements. |
| AstroGrav for Mac OS X 5.0.1 Oct 30, 2023 |
Enhanced the popups on tables to show data in all available units when the Alt (Option on a Mac) key is depressed. Restored the Window / Bring All to Front command, after it was accidentally removed in version 5.0. Corrected a view window fault that prevented information popups from working below the horizon when the viewpoint is attached to a location. Corrected a view window fault that made it impossible to draw an angle (using Alt+Shift+Ctrl+Drag) below the horizon when the viewpoint is attached to a location. Various minor bug fixes and improvements. |
| AstroGrav for Mac OS X 5.0 Oct 4, 2023 |
Added a new evolution algorithm, which is much more accurate than any of its predecessors, and which contains several bug fixes and performance improvements. Made several improvements to the ephemeris generator, including allowing multiple ephemerides in different tabs within a single window. Extended locations for viewing and ephemerides to the Sun, Moon, and planets, instead of restricting them to just the Earth. Completely revised and reorganized the sample simulations, adding many new ones and bringing the total number to 89. Added Mean Motion to the choice of orbital elements when adding or editing objects, in order to support the use of two-line elements (TLEs). Added nutation to the Earth's precession. Various minor bug fixes and improvements. |
| AstroGrav for Mac OS X 4.5.3 Aug 24, 2022 |
Corrected a fault that could occasionally cause bizarre and obviously incorrect behavior during evolution. A manually drawn angle on a view window can now have one or both of its endpoints attached to an object. A manually drawn angle on a view window now displays while the mouse is being dragged, instead of only after its button has been released. The angular diameter has been added to the information displayed in the view window popup of an object. In solar system simulations, additional information has been added to a view window popup when the Alt key is depressed. A bug has been fixed that prevented the Edit / Split Object... command from working correctly. Various minor bug fixes and improvements. |
| AstroGrav for Mac OS X 4.1.1 Jan 15, 2020 |
Corrected a serious fault that made it impossible to use the optional faint star files with the more recent versions of the Mac operating system. Corrected a fault that made the offline help inaccessible on a Mac. Changed the way that smaller bodies reflect light so as to better simulate the opposition surge effect. Various minor bug fixes and improvements. |
