Space Weather Message Code: ALTEF3 Serial Number: 3671 Issue Time: 2026 Apr 10 1407 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3670 Begin Time: 2026 Apr 03 0920 UTC Yesterday Maximum 2MeV Flux: 10680 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

SB KEPS @ AMSAT $ORB26100.1 2Line Orbital Elements 26100.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 April 10, 2026 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 withou ...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: 3670 Issue Time: 2026 Apr 09 0459 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3669 Begin Time: 2026 Apr 03 0920 UTC Yesterday Maximum 2MeV Flux: 7322 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: 3669 Issue Time: 2026 Apr 08 0459 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3668 Begin Time: 2026 Apr 03 0920 UTC Yesterday Maximum 2MeV Flux: 7359 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: 3668 Issue Time: 2026 Apr 07 0500 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3667 Begin Time: 2026 Apr 03 0920 UTC Yesterday Maximum 2MeV Flux: 6075 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: 3667 Issue Time: 2026 Apr 06 0459 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3666 Begin Time: 2026 Apr 03 0920 UTC Yesterday Maximum 2MeV Flux: 5995 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: 3666 Issue Time: 2026 Apr 05 0507 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3665 Begin Time: 2026 Apr 03 0920 UTC Yesterday Maximum 2MeV Flux: 2419 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

*In this edition:* 44th AMSAT Space Symposium and Annual Membership Meeting Announced ARISS Solicits School Contacts for 2007 VUCC & DXCC Standings April 2026 ​ARISS and AMSAT: On Track to Track Artemis 2 GridMasterMap Satellite Top 100 Rovers April 2026 Rankings Changes to AMSAT TLE Distribution for April 3, 2026 ARISS Plans SSTV Event for April Ambassador Events ARISS News Satellite Shorts from All Over The AMSAT(R) News Service bulletins are a free, weekly news and information service of AMSAT, ...Continue Reading

Space Weather Message Code: ALTEF3 Serial Number: 3665 Issue Time: 2026 Apr 04 1158 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3664 Begin Time: 2026 Apr 03 0920 UTC Yesterday Maximum 2MeV Flux: 4465 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