Space Weather Message Code: SUMX01 Serial Number: 189 Issue Time: 2025 Feb 23 2014 UTC SUMMARY: X-ray Event exceeded X1 Begin Time: 2025 Feb 23 1922 UTC Maximum Time: 2025 Feb 23 1927 UTC End Time: 2025 Feb 23 1934 UTC X-ray Class: X2.0 Location: N26W90 NOAA Scale: R3 - Strong NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-sola ...Continue Reading

Space Weather Message Code: ALTXMF Serial Number: 476 Issue Time: 2025 Feb 23 1931 UTC ALERT: X-Ray Flux exceeded M5 Threshold Reached: 2025 Feb 23 1925 UTC NOAA Scale: R2 - Moderate NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time in ...Continue Reading

*AMSAT NEWS SERVICE*** *ANS-054* In this edition: * HADES-R FM Repeater Activated and Designated Spain-OSCAR 124 (SO-124) * ARISS Completes Successful FRAM2Ham Simulation Event Using ISS Radio * Blue Ghost and Resilience: Private Landers on Course for Lunar Touchdowns * The Space Race Below: How Satellites Are Pushing the Limits in VLEO * Beyond L1: Solar Sails Aim to Enhance Space Weather Alerts * Changes to AMSAT-NA TLE Distribution for February 21, 2025 * ARISS News * Upcoming Satellite Operations * AMSAT Ambassador ...Continue Reading

SB KEPS @ AMSAT $ORB25052.1 2Line Orbital Elements 25052.AMSAT QST de W1STR AMSAT Orbital Elements for Amateur Satellites in TLE Format From Orbital Analysis Office New England Sci-Tech STEM Education Center Natick, MA February 21, 2025 To all radio amateurs These element sets describe the orbits of various satellites in use by the amateur radio community. For details see: www.amsat.org/keplerian-elements-formats/ A daily update of element sets is available at: www.amsat.org/tle/daily-bulletin.txt or wi ...Continue Reading

This week there are no additions or deletions to the AMSAT TLE distribution. Keps mailing list -- keps@amsat.org View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/keps@amsat.org To unsubscribe send an email to keps-leave@amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org ...Continue Reading

Space Weather Message Code: ALTEF3 Serial Number: 3425 Issue Time: 2025 Feb 17 0347 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3424 Begin Time: 2025 Feb 11 1405 UTC Yesterday Maximum 2MeV Flux: 3934 pfu Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.Thank you for using the Product Subscription Service. If you would like to remove a product subscription or updat ...Continue Reading

Space Weather Message Code: ALTEF3 Serial Number: 3424 Issue Time: 2025 Feb 16 0437 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3423 Begin Time: 2025 Feb 11 1405 UTC Yesterday Maximum 2MeV Flux: 4741 pfu Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.Thank you for using the Product Subscription Service. If you would like to remove a product subscription or updat ...Continue Reading

Space Weather Message Code: ALTEF3 Serial Number: 3423 Issue Time: 2025 Feb 15 0451 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3422 Begin Time: 2025 Feb 11 1405 UTC Yesterday Maximum 2MeV Flux: 6603 pfu Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.Thank you for using the Product Subscription Service. If you would like to remove a product subscription or updat ...Continue Reading

Space Weather Message Code: ALTEF3 Serial Number: 3422 Issue Time: 2025 Feb 14 1247 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3421 Begin Time: 2025 Feb 11 1405 UTC Yesterday Maximum 2MeV Flux: 2426 pfu Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.Thank you for using the Product Subscription Service. If you would like to remove a product subscription or updat ...Continue Reading

NOTICE: In an effort to minimize confusion between sources of two line element sets, AMSAT is adopting the convention of listing the USSF/NORAD Satellite Catalog name first, followed by any secondary name or names in parentheses. For example "POEM 4 (BGS ARPIT)" was added recently where "POEM 4" is the name that appears in the US Space Force Satellite Catalog, and "BGS ARPIT" is the name best known within the amateur satellite community. Expect name changes for affected satellites ...Continue Reading