SB KEPS @ AMSAT $ORB25311.1 2Line Orbital Elements 25311.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 November 07, 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

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: 496 Issue Time: 2025 Nov 05 2205 UTC ALERT: X-Ray Flux exceeded M5 Threshold Reached: 2025 Nov 05 1103 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: 3556 Issue Time: 2025 Nov 05 1453 UTC ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Threshold Reached: 2025 Nov 05 1445 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

Space Weather Message Code: ALTXMF Serial Number: 495 Issue Time: 2025 Nov 05 1109 UTC ALERT: X-Ray Flux exceeded M5 Threshold Reached: 2025 Nov 05 1106 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: 198 Issue Time: 2025 Nov 04 2221 UTC SUMMARY: X-ray Event exceeded X1 Begin Time: 2025 Nov 04 2145 UTC Maximum Time: 2025 Nov 04 2201 UTC End Time: 2025 Nov 04 2211 UTC X-ray Class: X1.1 Optical Class: na Location: S13E72 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: 494 Issue Time: 2025 Nov 04 2200 UTC ALERT: X-Ray Flux exceeded M5 Threshold Reached: 2025 Nov 04 2157 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: 197 Issue Time: 2025 Nov 04 1755 UTC SUMMARY: X-ray Event exceeded X1 Begin Time: 2025 Nov 04 1725 UTC Maximum Time: 2025 Nov 04 1734 UTC End Time: 2025 Nov 04 1751 UTC X-ray Class: X1.8 Location: N24E54 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: 493 Issue Time: 2025 Nov 04 1727 UTC ALERT: X-Ray Flux exceeded M5 Threshold Reached: 2025 Nov 04 1725 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: 3555 Issue Time: 2025 Nov 04 0551 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3554 Begin Time: 2025 Oct 31 1250 UTC Yesterday Maximum 2MeV Flux: 6364 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