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- CelesTrak
CelesTrak's mission remains focused on making data and other resources freely available to the space community to facilitate understanding of our orbital environment and how to use it safely and responsibly
- CelesTrak. org - keeptrack. space
CelesTrak, a non-profit organization founded and managed by Dr T S Kelso, has established itself as one of the most trusted and widely used sources for orbital element sets outside of the United States Space Command (USSPACECOM) itself
- Orbitron, Gpredict, and PSTRotator with new TLE format
CelesTrak is continuing to depreciate the use of the legacy static TLE text files, in no small part to limit abuse by a growing number of users who download files— which are only updated every 2 hours —hundreds or even thousands of times a day
- CelesTrak: Current GP Element Sets
NORAD GP Element Sets Current Data Current as of 2025 Jul 24 18:06:09 UTC (Day 205)
- SOCRATES Plus - CelesTrak
CelesTrak maintains operational status codes for each object in the SATCAT, which is updated on a daily basis Another change since 2004 has been the rapid (and then unforseen) growth in the orbital population
- EOP and Space Weather Data - CelesTrak
EOP and Space Weather Data "Earth Orientation Parameter and Space Weather Data for Flight Operations," presented at the 23rd AAS AIAA Space Flight Mechanics Meeting, 2013 February 10–14 "Using EOP and Space Weather Data for Satellite Operations," presented at the 15th AIAA AAS Astrodynamics Specialist Conference, 2005 August 7–11 Earth Orientation Parameters (EOP) Data Documentation
- Satellite Tracking Software Index - CelesTrak
This index provides links to information on satellite tracking software for many of today's popular operating systems I hope you'll find this information useful in helping you make an informed decision about which satellite tracking program might best satisfy your needs — T S Kelso
- GPS Data - CelesTrak
CelesTrak ® Orbital Data Current Data (GP) GPE Statistics Special Data Request (GP) Supplemental Data (SupGP) SupGP Statistics Special Data Request (SupGP) Documentation
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