The following satellites have been added to this weeks AMSAT TLE Distribution: MAGNARO-II-Piscis is object 68798 (2026-088G). Frequency: 436.326 MHz. ARICA 2 is object 68796 (2026-088E). Frequency: 436.830 MHz. FSI-SAT 2 is object 68792 (2026-088A). Frequency: 437.176 MHz. WASEDA-SAT-ZERO-II is object 68797 (2026-088F). Frequency: 437.205 MHz. OrigamiSat 2 is object 68795 (2026-088D). Frequency: 437.506 MHz. Joe Fitzgerald KM1P AMSAT Orbital Elements Manager Keps mailing list -- keps@amsat.org View archives of thi ...Continue Reading

Space Weather Message Code: ALTXMF Serial Number: 526 Issue Time: 2026 Apr 26 2300 UTC ALERT: X-Ray Flux exceeded M5 Threshold Reached: 2026 Apr 26 2257 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-116 April 26, 2026 In this edition: * AMSAT Update from 2026 CubeSat Developers Workshop Available Online * AMSAT-HB Announces Results of 2026 HB9RG Trophy Distance Competition * Rocket Lab Launches Eight JAXA Satellites on Kakushin Rising Mission * KrakenRF Discovery Drive Rotator Campaign Exceeds $314k Funding Goal * Changes to AMSAT TLE Distribution for April 24, 2026 * ARISS News * AMSAT Ambassador Activities * Satellite Shorts From All Over The AMSAT® News Service bulletins are a ...Continue Reading

Space Weather Message Code: ALTXMF Serial Number: 525 Issue Time: 2026 Apr 24 1812 UTC ALERT: X-Ray Flux exceeded M5 Threshold Reached: 2026 Apr 24 1812 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: 216 Issue Time: 2026 Apr 24 0826 UTC SUMMARY: X-ray Event exceeded X1 Begin Time: 2026 Apr 24 0801 UTC Maximum Time: 2026 Apr 24 0813 UTC End Time: 2026 Apr 24 0818 UTC X-ray Class: X2.5 Optical Class: 2b Location: N20W90 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: 524 Issue Time: 2026 Apr 24 0812 UTC ALERT: X-Ray Flux exceeded M5 Threshold Reached: 2026 Apr 24 0812 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: ALTEF3 Serial Number: 3684 Issue Time: 2026 Apr 24 0505 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3683 Begin Time: 2026 Apr 19 1920 UTC Yesterday Maximum 2MeV Flux: 3446 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: SUMX01 Serial Number: 215 Issue Time: 2026 Apr 24 0131 UTC SUMMARY: X-ray Event exceeded X1 Begin Time: 2026 Apr 24 0051 UTC Maximum Time: 2026 Apr 24 0107 UTC End Time: 2026 Apr 24 0113 UTC X-ray Class: X2.4 Location: N17W71 NOAA Scale: R3 - Strong Comment: Accompanied by a tenflare with a castelli-U signature. No radio observations currently available. NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potenti ...Continue Reading

Space Weather Message Code: ALTXMF Serial Number: 523 Issue Time: 2026 Apr 24 0108 UTC ALERT: X-Ray Flux exceeded M5 Threshold Reached: 2026 Apr 24 0105 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

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