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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.
Pennsylvania Spatial Data Access (PASDA), [4] the official public geospatial data clearinghouse for the Commonwealth of Pennsylvania marked its 18th year in 2014. PASDA, which has grown from a small website offering 35 data sets in 1996 to the expansive user-centered data clearinghouse that it is today, has become a staple of the GIS community in Pennsylvania.
Ground track example from Heavens-Above.An observer in Sicily can see the International Space Station when it enters the circle at 9:26 p.m. The observer would see a bright object appear in the northwest, which would move across the sky to a point almost overhead, where it disappears from view, in the space of three minutes.
The National Reconnaissance Office logo. This is a list of NRO Launch (NROL) designations for satellites operated by the United States National Reconnaissance Office.Those missions are generally classified, so that their exact purposes and orbital elements are not published.
The International Designator, also known as COSPAR ID, is an international identifier assigned to artificial objects in space. [1] It consists of the launch year, a three-digit incrementing launch number of that year [n 1] and up to a three-letter code representing the sequential identifier of a piece in a launch.
Jul. 19—Farm market vouchers are now available to eligible older Schuylkill County adults. As in past years, Diakon Community Services is administering the 2023 Senior Farm Market Nutrition Program.
This is a list of satellites and spacecraft which have been given USA designations by the United States Air Force.These designations have been applied to most United States military satellites since 1984, and replaced the earlier OPS designation.
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