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  2. Satellite Catalog Number - Wikipedia

    en.wikipedia.org/wiki/Satellite_Catalog_Number

    The Satellite Catalog Number (SATCAT), also known as NORAD Catalog Number, NORAD ID, USSPACECOM object number, is a sequential nine-digit number assigned by the United States Space Command (USSPACECOM), and previously the North American Aerospace Defense Command (NORAD), in the order of launch or discovery to all artificial objects in the orbits of Earth and those that left Earth's orbit. [1]

  3. List of free geology software - Wikipedia

    en.wikipedia.org/wiki/List_of_free_geology_software

    Free 3D visualization and communication software for integrated, multi-disciplinary geoscience and mining data and models, which also connects to Python through geoh5py, its open-source API Mira Geoscience Ltd. Free / Proprietary Microsoft Windows: C++: Free license key is automatically emailed upon request, and the software is permanently free

  4. Simplified perturbations models - Wikipedia

    en.wikipedia.org/wiki/Simplified_perturbations...

    This set of models is often referred to collectively as SGP4 due to the frequency of use of that model particularly with two-line element sets produced by NORAD and NASA. These models predict the effect of perturbations caused by the Earth’s shape, drag, radiation, and gravitation effects from other bodies such as the sun and moon.

  5. NORAD - Wikipedia

    en.wikipedia.org/wiki/NORAD

    A map of NORAD regions and sectors. North American Aerospace Defense Command (NORAD / ˈ n ɔːr æ d /; French: Commandement de la Défense Aérospatiale de l'Amérique du Nord, CDAAN), known until March 1981 as the North American Air Defense Command, is a combined organization of the United States and Canada that provides aerospace warning, air sovereignty, and protection for Canada and the ...

  6. Two-line element set - Wikipedia

    en.wikipedia.org/wiki/Two-line_element_set

    A two-line element set (TLE, or more rarely 2LE) or three-line element set (3LE) is a data format encoding a list of orbital elements of an Earth-orbiting object for a given point in time, the epoch. Using a suitable prediction formula, the state (position and velocity) at any point in the past or future can be estimated to some accuracy.

  7. Want to follow Santa's flight? Here's when NORAD and Google's ...

    www.aol.com/want-santas-flight-heres-norad...

    The NORAD Tracks Santa app is also available in the Apple App and Google Play stores, and the tracker will be available on Facebook, Instagram, YouTube and X, according to NORAD.

  8. List of free and open-source software packages - Wikipedia

    en.wikipedia.org/wiki/List_of_free_and_open...

    This is a list of free and open-source software (FOSS) packages, computer software licensed under free software licenses and open-source licenses. Software that fits the Free Software Definition may be more appropriately called free software ; the GNU project in particular objects to their works being referred to as open-source . [ 1 ]

  9. Systems Tool Kit - Wikipedia

    en.wikipedia.org/wiki/Systems_Tool_Kit

    Systems Tool Kit (formerly Satellite Tool Kit), often referred to by its initials STK, is a multi-physics software application from Analytical Graphics, Inc. (an Ansys company) that enables engineers and scientists to perform complex analyses of ground, sea, air, and space platforms, and to share results in one integrated environment. [1]