AstroGrav for Mac 4.4.3

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AstroGrav for Mac 4.4.3

Company:	AstroGrav Astronomy Software
Country:	United Kingdom, Nottinghamshire, Nottingham
ASP member:	No
Company Web site:	http://www.astrograv.co.uk
Site of program:	http://www.astrograv.co.uk/
Application info:	http://www.astrograv.co.uk/index.html
Video:	http://www.astrograv.co.uk/movie-catalogue.html

Author:	Russell Calvert

Sales email:	russcalvert@astrograv.co.uk
Support email:	russcalvert@astrograv.co.uk

License type:	Freeware
Class:	Education::Science
Specific:
Categories:	Education :: Astronomy, Education :: Science, Home & Hobby :: Education, Education :: Mathematics
Platform:	OS X
OS:	Mac OS X,
System requirements:	Intel Core 2 Duo or better, Mac OS X 10.11 (El Capitan) minimum, 2 GB RAM, 1GB disk space
Language:	Dutch, English, French, German, Italian, Portuguese, Spanish
Limitations:	No limitations

English

Keywords: gravity, astronomy, astro, simulation, solar system, gravitation, newton, 3d, orbit, educational, many-body, astrophysics, planetary motion, kepler, animated, n-body, physics, science, math, space, interactive, gravitational slingshot, exploration

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.

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Date	Version	Status	Release history
06 Dec 2021	4.4.3	Minor Update	Made several minor improvements to the 'Edit/Import Objects...' and 'Tools/Generate Ephemeris...' commands. Updated the Solar System sample simulations to 01/01/2022. Improved tables to always displays vertical scroll bars, row scrollers, and help buttons. Various minor bug fixes and improvements.
12 Oct 2021	4.4.2	Minor Update	Corrected a fault that could occasionally cause bizarre behavior during evolution. Made Earth-based views automatically view from the home location. Switched on planetary aberration in all solar system view windows. Added an 'Append Epochs to Names' option to the 'Edit/Import Objects...' command.
06 Sep 2021	4.4.1	Minor Update	Greatly speeded up evolution in cases where most objects are of low mass. Corrected a fault that caused evolution to fail after importing the same asteroid or comet twice. Corrected faults that caused all orbits to disappear after cancelling an object edit. Various minor bug fixes and improvements.
06 Aug 2021	4.4	Major Update	Made major improvements to the evolution algorithm. Added search options to find celestial positions. Simplified the handling of trajectories and histories. Simplified the handling of invisible objects. Added the Hilda category to the asteroid importer. Various minor bug fixes and improvements.
29 Jan 2021	4.3.1	Minor Update	Made the 'View/View From...' command available on ephemeris windows. Corrected a fault that could cause some of the information to be missing in view window popups. Corrected a fault that could cause a poor quality display on some high resolution screens. Various minor bug fixes and improvements.
23 Jan 2021	4.3	Major Update	Made major improvements to ephemeris generation and the handling of dates and times. Added more options for drawing trajectories and histories. Added a greatly improved precession model. Corrected a fault that could cause evolution to run extremely slowly. Various minor bug fixes and improvements.
09 Oct 2020	4.2.2	Minor Update	Corrected a fault that could cause imported asteroids to be incorrectly positioned. Appended the name of the small body supplier to the name of an imported asteroid or comet. Made the structure of a simulation consistent with the evolver mass threshold. Various minor bug fixes and improvements.
06 Oct 2020	4.2.1	Minor Update	Replaced the four MPC asteroid import choices with the two 'MPC Asteroids' and 'MPC Asteroids (Daily)' choices. Added the 'Sort Designations By Time' checkbox to the asteroid and comet tables. Added several new time units. Various minor bug fixes and improvements.
21 Aug 2020	4.2	Major Update	Added a completely redesigned object editor. Added about 1,000,000 asteroids from the Lowell Asteroid Orbital Elements Database to the object importer. Improved simulation evolution and ephemeris generation. Added the Barycentric Dynamical Time (TDB) unit. Various minor bug fixes and improvements.
14 Jan 2020	4.1.1	Minor Update	Corrected a serious fault that made it impossible to use the optional faint star files. Corrected a fault that made the offline help inaccessible. Changed the way that smaller bodies reflect light so as to better simulate the opposition surge effect. Various minor bug fixes and improvements.
20 Dec 2019	4.1	Major Update	Added new comet and asteroid search options. Greatly improved evolving to events. Made it easier to view from the home location. Made several improvements to the appearance and performance when drawing views. Updated the Solar System sample simulations. Various minor bug fixes and improvements.

Distribution permissions: You may redistribute an unregistered copy of the AstroGrav Software by any means (CDROM, cover disk, web site, etc) as long as you do not change the original package, and distribute only the original package.

ASTROGRAV SOFTWARE LICENSE AGREEMENT

PLEASE READ THIS SOFTWARE LICENSE AGREEMENT ("LICENSE") CAREFULLY BEFORE USING THE ASTROGRAV SOFTWARE. BY USING THE ASTROGRAV SOFTWARE, YOU ARE AGREEING TO BE BOUND BY THE TERMS AND CONDITIONS OF THIS LICENSE. IF YOU DO NOT AGREE WITH THESE TERMS AND CONDITIONS, YOU MAY NOT USE THE ASTROGRAV SOFTWARE, AND MUST PROMPTLY DELETE IT FROM YOUR COMPUTER(S).

This LICENSE defines what you may and may not do with the AstroGrav Software, and contains limitations on warranties and liabilities. If you are unable or unwilling to accept these conditions in full, then, notwithstanding the conditions in the remainder of this LICENSE, you may not use the program at all.

ASTROGRAV SOFTWARE LICENSE

The AstroGrav Software License allows you to use the AstroGrav Software on any number of computers. You may redistribute an unregistered copy of the AstroGrav Software by any means (CDROM, cover disk, website, etc) as long as you do not change the original package, and distribute only the original package.

RESTRICTIONS

You MAY NOT:
(1) sublicense, lease, rent, or sell the AstroGrav Software to any other party;
(2) cause or permit reverse engineering, disassembly, decompilation, or modification of the AstroGrav Software;
(3) remove any product identification, copyright notices, or other notices or proprietary restrictions from the AstroGrav Software;
(4) transfer registration details to any other party without the express written permission of AstroGrav Astronomy Software.

TERM OF LICENSE

This LICENSE shall continue for as long as you use the AstroGrav Software according to the terms of this agreement. However, this LICENSE will terminate if you fail to comply with any of its terms or conditions. You agree, upon termination, to destroy all copies of the AstroGrav Software.

COPYRIGHT/OWNERSHIP

The AstroGrav Software and its source code are owned by AstroGrav Astronomy Software and are protected by copyright law, international copyright treaty, and other intellectual property laws. The AstroGrav Software is licensed and not sold. You acquire only the right to use the AstroGrav Software and do not acquire any rights, either expressed or implied, in the AstroGrav Software other than those specified in this LICENSE.

LIMITED WARRANTY

YOU EXPRESSLY ACKNOWLEDGE AND AGREE THAT USE OF THE ASTROGRAV SOFTWARE IS AT YOUR SOLE RISK AND THAT THE ENTIRE RISK AS TO SATISFACTORY QUALITY, PERFORMANCE, AND ACCURACY IS WITH YOU. TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, THE ASTROGRAV SOFTWARE IS PROVIDED "AS IS", WITH ALL FAULTS, AND WITHOUT WARRANTY OF ANY KIND, AND ASTROGRAV ASTRONOMY SOFTWARE DISCLAIMS ALL WARRANTIES AND CONDITIONS WITH RESPECT TO THE ASTROGRAV SOFTWARE, EITHER EXPRESSED OR IMPLIED, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A PARTICULAR PURPOSE, AND ACCURACY.

LIMITATION OF LIABILITY

TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, IN NO EVENT SHALL ASTROGRAV ASTRONOMY SOFTWARE OR ITS SUPPLIERS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES WHATSOEVER (INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF PROFITS, LOSS OF DATA, BUSINESS INTERRUPTION, OR ANY OTHER COMMERCIAL DAMAGES OR LOSSES) ARISING OUT OF YOUR USE OF OR INABILITY TO USE THE ASTROGRAV SOFTWARE, EVEN IF ASTROGRAV ASTRONOMY SOFTWARE HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. IN ANY CASE, ASTROGRAV ASTRONOMY SOFTWARE'S ENTIRE LIABILITY UNDER ANY PROVISION OF THIS LICENCE AGREEMENT SHALL BE LIMITED TO THE AMOUNT ACTUALLY PAID BY YOU FOR THE PRODUCT.

HIGH RISK ACTIVITIES

THE ASTROGRAV SOFTWARE IS NOT DESIGNED, MANUFACTURED, OR INTENDED FOR USE IN HAZARDOUS ENVIRONMENTS REQUIRING FAIL-SAFE PERFORMANCE, SUCH AS IN THE OPERATION OF NUCLEAR FACILITIES, AIRCRAFT NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL SYSTEMS, LIFE SUPPORT MACHINES, WEAPONS SYSTEMS, OR OTHER EQUIPMENT IN WHICH THE FAILURE OF THE ASTROGRAV SOFTWARE COULD LEAD TO DEATH, PERSONAL INJURY, OR SEVERE PHYSICAL OR ENVIRONMENTAL DAMAGE. ASTROGRAV ASTRONOMY SOFTWARE SPECIFICALLY DISCLAIM ANY EXPRESSED OR IMPLIED WARRANTY OF FITNESS FOR "HIGH RISK ACTIVITIES".

GENERAL

If any provision of this LICENSE is found void or unenforceable, the remainder will remain valid and enforceable to the fullest extent permitted by applicable law. In such event, each provision of this LICENSE that is invalid or unenforceable shall be replaced with a valid and enforceable provision as similar in terms to such invalid or unenforceable provision as may be possible.

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