SB KEPS @ AMSAT $ORB25136.1 2Line Orbital Elements 25136.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 May 16, 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 without ...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: ALTXMF Serial Number: 482 Issue Time: 2025 May 14 1117 UTC ALERT: X-Ray Flux exceeded M5 Threshold Reached: 2025 May 14 1115 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

Space Weather Message Code: SUMX01 Serial Number: 193 Issue Time: 2025 May 14 0839 UTC SUMMARY: X-ray Event exceeded X1 Begin Time: 2025 May 14 0804 UTC Maximum Time: 2025 May 14 0825 UTC End Time: 2025 May 14 0831 UTC X-ray Class: X2.7 Optical Class: 2b Location: N15E60 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, strong ...Continue Reading

Space Weather Message Code: ALTXMF Serial Number: 481 Issue Time: 2025 May 14 0819 UTC ALERT: X-Ray Flux exceeded M5 Threshold Reached: 2025 May 14 0817 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

Space Weather Message Code: ALTXMF Serial Number: 480 Issue Time: 2025 May 14 0325 UTC ALERT: X-Ray Flux exceeded M5 Threshold Reached: 2025 May 14 0323 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

Space Weather Message Code: SUMX01 Serial Number: 192 Issue Time: 2025 May 13 1552 UTC SUMMARY: X-ray Event exceeded X1 Begin Time: 2025 May 13 1525 UTC Maximum Time: 2025 May 13 1538 UTC End Time: 2025 May 13 1544 UTC X-ray Class: X1.2 Optical Class: 1b Location: N08W90 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, strong ...Continue Reading

Space Weather Message Code: ALTXMF Serial Number: 479 Issue Time: 2025 May 13 1537 UTC ALERT: X-Ray Flux exceeded M5 Threshold Reached: 2025 May 13 1535 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-131 May 11, 2025 In this edition: * Last chance to purchase tickets to the TAPR/AMSAT Banquet, being held on Friday, May 16th. * AMSAT Ambassador Program Seeks Input During Hamvention 2025 * 43rd Annual AMSAT Space Symposium & Annual General Meeting Announced * VUCC  and DXCC Satellite Standings for May 2025 * AMSAT-DL Presents Their Space Days Event in September, 2025 * Changes to AMSAT-NA TLE Distribution * ARISS Proposal Window Closes May 23, 2025 * ARISS News * Upcoming Satell ...Continue Reading

Space Weather Message Code: ALTEF3 Serial Number: 3463 Issue Time: 2025 May 09 0642 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3462 Begin Time: 2025 May 02 1330 UTC Yesterday Maximum 2MeV Flux: 15854 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 upda ...Continue Reading