Space Weather Message Code: ALTEF3 Serial Number: 3582 Issue Time: 2025 Dec 23 0902 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3581 Begin Time: 2025 Dec 21 1425 UTC Yesterday Maximum 2MeV Flux: 1882 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: 3581 Issue Time: 2025 Dec 22 1500 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3580 Begin Time: 2025 Dec 21 1425 UTC Yesterday Maximum 2MeV Flux: 1566 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: 3580 Issue Time: 2025 Dec 21 1445 UTC ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Threshold Reached: 2025 Dec 21 1425 UTC Station: GOES19 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 update the personal information in your account, go to the Product ...Continue Reading

AMSAT News ServiceANS-355December 21, 2025In this edition:[*]W2RS Memorial AMSAT CW Activity Day to be Held January 1, 2026 [*]New Satellite Tracking Application Released [*]How University Space Clubs Prepare for Their First Satellite Project [*]Changes to AMSAT TLE Distribution for December 19, 2025 [*]ARISS News [*]AMSAT Ambassador Activities [*]Satellite Shorts From All Over The AMSAT News Service bulletins are a free, weekly news and information service of AMSAT, The Radio Amateur Satellite Corporation. ANS publ ...Continue Reading

Space Weather Message Code: ALTEF3 Serial Number: 3579 Issue Time: 2025 Dec 20 0459 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3578 Begin Time: 2025 Dec 17 1405 UTC Yesterday Maximum 2MeV Flux: 3239 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: 3578 Issue Time: 2025 Dec 19 0756 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3577 Begin Time: 2025 Dec 17 1405 UTC Yesterday Maximum 2MeV Flux: 2694 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

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

SB KEPS @ AMSAT $ORB25353.1 2Line Orbital Elements 25353.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 December 19, 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 wit ...Continue Reading

Space Weather Message Code: ALTEF3 Serial Number: 3577 Issue Time: 2025 Dec 18 1106 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3576 Begin Time: 2025 Dec 17 1405 UTC Yesterday Maximum 2MeV Flux: 1632 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: 3576 Issue Time: 2025 Dec 17 1506 UTC ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Threshold Reached: 2025 Dec 17 1405 UTC Station: GOES19 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 update the personal information in your account, go to the Product ...Continue Reading