T.S. Kelso
@tskelso.bsky.social
Operator of CelesTrak, the world's first source for orbital element sets and related software and educational materials.
Pinned
T.S. Kelso
@tskelso.bsky.social
· Dec 1
In case you missed it, 18 SDS just assigned NORAD Catalog Number 60011. As a reminder, we run out of 5-digit catalog numbers at 70000. CelesTrak will not be supporting Alpha-5, since all standards show these as integers. See celestrak.org/NORAD/docume... to prepare now. [Re-post from X]
NOAA is reporting and predicting elevated geomagnetic activity: celestrak.org/SpaceData/. Expect to see increased prediction errors in all LEO orbital data.
November 12, 2025 at 3:57 AM
NOAA is reporting and predicting elevated geomagnetic activity: celestrak.org/SpaceData/. Expect to see increased prediction errors in all LEO orbital data.
18 SDS has cataloged 10 objects from the launch (2025-258) of Guowang Group 13 atop a Long March-12 rocket from Wenchang Space Launch Site on Nov 10 at 0241 UTC: www.china-in-space.com/p/guowang-re.... SATCAT data can be found at: celestrak.org/satcat/table....
November 12, 2025 at 2:28 AM
18 SDS has cataloged 10 objects from the launch (2025-258) of Guowang Group 13 atop a Long March-12 rocket from Wenchang Space Launch Site on Nov 10 at 0241 UTC: www.china-in-space.com/p/guowang-re.... SATCAT data can be found at: celestrak.org/satcat/table....
18 SDS has cataloged 3 objects from the launch (2025-256) of Chutian-2 01 & 02 atop a Lijian-1 rocket from Jiuquan Satellite Launch Center on Nov 9 at 0332 UTC: www.china-in-space.com/p/cas-space-.... SATCAT data can be found at: celestrak.org/satcat/table....
November 12, 2025 at 1:57 AM
18 SDS has cataloged 3 objects from the launch (2025-256) of Chutian-2 01 & 02 atop a Lijian-1 rocket from Jiuquan Satellite Launch Center on Nov 9 at 0332 UTC: www.china-in-space.com/p/cas-space-.... SATCAT data can be found at: celestrak.org/satcat/table....
18 SDS has cataloged 4 objects from the launch (2025-255) of Shiyan-32 01-03 atop a Long March-11 rocket from waters off Shandong Province on Nov 8 at 2101 UTC: www.china-in-space.com/p/anonymous-.... SATCAT data can be found at: celestrak.org/satcat/table....
November 12, 2025 at 1:32 AM
18 SDS has cataloged 4 objects from the launch (2025-255) of Shiyan-32 01-03 atop a Long March-11 rocket from waters off Shandong Province on Nov 8 at 2101 UTC: www.china-in-space.com/p/anonymous-.... SATCAT data can be found at: celestrak.org/satcat/table....
CelesTrak has ephemeris-based SupGP data for all 29 satellites from the Starlink G6-87 launch (2025-259) atop a Falcon 9 rocket from Cape Canaveral on 2025-11-11 at 03:21:30 UTC: spaceflightnow.com/2025/11/10/l.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
November 12, 2025 at 12:28 AM
CelesTrak has ephemeris-based SupGP data for all 29 satellites from the Starlink G6-87 launch (2025-259) atop a Falcon 9 rocket from Cape Canaveral on 2025-11-11 at 03:21:30 UTC: spaceflightnow.com/2025/11/10/l.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
With the latest dropout of 18 SDS GP data, the mean age of the data is now over 2.4 days old and almost nothing has been updated in the past day. The result is that 3,782 objects with SupGP data have an 18 SDS GP RMS difference of over 25 km--7 more than 10,000 km RMS.
November 10, 2025 at 8:23 AM
With the latest dropout of 18 SDS GP data, the mean age of the data is now over 2.4 days old and almost nothing has been updated in the past day. The result is that 3,782 objects with SupGP data have an 18 SDS GP RMS difference of over 25 km--7 more than 10,000 km RMS.
CelesTrak has ephemeris-based SupGP data for 28 of 29 satellites from the Starlink G10-51 launch (2025-257) atop a Falcon 9 rocket from Cape Canaveral on 2025-11-09 at 08:10:10 UTC: spaceflightnow.com/2025/11/07/l.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
November 9, 2025 at 7:31 PM
CelesTrak has ephemeris-based SupGP data for 28 of 29 satellites from the Starlink G10-51 launch (2025-257) atop a Falcon 9 rocket from Cape Canaveral on 2025-11-09 at 08:10:10 UTC: spaceflightnow.com/2025/11/07/l.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
CelesTrak has ephemeris-based SupGP data for all 28 satellites from the Starlink G11-14 launch (2025-254) atop a Falcon 9 rocket from Vandenberg SFB on 2025-11-06 at 21:13:50 UTC: spaceflightnow.com/2025/11/06/l.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
November 7, 2025 at 3:26 PM
CelesTrak has ephemeris-based SupGP data for all 28 satellites from the Starlink G11-14 launch (2025-254) atop a Falcon 9 rocket from Vandenberg SFB on 2025-11-06 at 21:13:50 UTC: spaceflightnow.com/2025/11/06/l.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
CelesTrak has ephemeris-based SupGP data for all 29 satellites from the Starlink G6-81 launch (2025-253) atop a Falcon 9 rocket from Cape Canaveral on 2025-11-06 at 01:31:10 UTC: spaceflightnow.com/2025/11/05/l.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
November 6, 2025 at 10:30 PM
CelesTrak has ephemeris-based SupGP data for all 29 satellites from the Starlink G6-81 launch (2025-253) atop a Falcon 9 rocket from Cape Canaveral on 2025-11-06 at 01:31:10 UTC: spaceflightnow.com/2025/11/05/l.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
18 SDS has cataloged 3 objects from the launch (2025-252) of QPS-SAR-14 (YACHIHOKO-I) atop an Electron rocket from Māhia Peninsula, NZ on Nov 5 at 1951 UTC: spacenews.com/rocket-lab-l.... SATCAT data can be found at: celestrak.org/satcat/table... (GP data at: celestrak.org/NORAD/elemen...).
November 6, 2025 at 10:29 PM
18 SDS has cataloged 3 objects from the launch (2025-252) of QPS-SAR-14 (YACHIHOKO-I) atop an Electron rocket from Māhia Peninsula, NZ on Nov 5 at 1951 UTC: spacenews.com/rocket-lab-l.... SATCAT data can be found at: celestrak.org/satcat/table... (GP data at: celestrak.org/NORAD/elemen...).
18 SDS has cataloged 1 object from the launch (2025-251) of Sentinel-1D atop an Ariane 6 rocket from Europe’s Spaceport, French Guiana on Nov 4 at 2102 UTC: newsroom.arianespace.com/with-ariane-.... SATCAT data at: celestrak.org/satcat/table... (GP data at: celestrak.org/NORAD/elemen...).
November 6, 2025 at 10:23 PM
18 SDS has cataloged 1 object from the launch (2025-251) of Sentinel-1D atop an Ariane 6 rocket from Europe’s Spaceport, French Guiana on Nov 4 at 2102 UTC: newsroom.arianespace.com/with-ariane-.... SATCAT data at: celestrak.org/satcat/table... (GP data at: celestrak.org/NORAD/elemen...).
The errors continue. Today, when 18 SDS finally released Starlink data for 2025-243 (Oct 26) & -244 (Oct 28), there is no data for STARLINK-35352--and no slot for it in the SATCAT (66177 already assigned 2025-242C). And 2 of the objects are cross-tagged (ones with names in red).
November 6, 2025 at 4:49 AM
The errors continue. Today, when 18 SDS finally released Starlink data for 2025-243 (Oct 26) & -244 (Oct 28), there is no data for STARLINK-35352--and no slot for it in the SATCAT (66177 already assigned 2025-242C). And 2 of the objects are cross-tagged (ones with names in red).
CelesTrak has GP data for 2 objects from the launch (2025-250) of Yaogan-46 atop a Long March-7A rocket from Wenchang Space Launch Site on Nov 3 at UTC: www.china-in-space.com/p/third-beyo.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
November 4, 2025 at 3:15 PM
CelesTrak has GP data for 2 objects from the launch (2025-250) of Yaogan-46 atop a Long March-7A rocket from Wenchang Space Launch Site on Nov 3 at UTC: www.china-in-space.com/p/third-beyo.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
CelesTrak has GP data for 2 objects from the launch (2025-249) of CMS-03 (GSAT-7R) atop a LVM-3 rocket from Satish Dhawan Space Centre on Nov 2 at 1156 UTC: www.indiatoday.in/science/stor.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
November 4, 2025 at 4:31 AM
CelesTrak has GP data for 2 objects from the launch (2025-249) of CMS-03 (GSAT-7R) atop a LVM-3 rocket from Satish Dhawan Space Centre on Nov 2 at 1156 UTC: www.indiatoday.in/science/stor.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
1/ It is difficult getting updates out with constant errors in 18 SDS data. Take this example for the Shenzhou-21 launch on Oct 31. The launch date isn't close & the objects show as from different launches (2025-246 vs. 2025-248) with same unique inclination.
November 4, 2025 at 1:50 AM
1/ It is difficult getting updates out with constant errors in 18 SDS data. Take this example for the Shenzhou-21 launch on Oct 31. The launch date isn't close & the objects show as from different launches (2025-246 vs. 2025-248) with same unique inclination.
CelesTrak has GP data for 1 object from the launch (2025-246) of Shenzhou-21 atop a Long March-2F rocket from Jiuquan Satellite Launch Center on Oct 31 at 1544 UTC: www.china-in-space.com/p/shenzhou-2.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
November 2, 2025 at 4:24 AM
CelesTrak has GP data for 1 object from the launch (2025-246) of Shenzhou-21 atop a Long March-2F rocket from Jiuquan Satellite Launch Center on Oct 31 at 1544 UTC: www.china-in-space.com/p/shenzhou-2.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
CelesTrak has ephemeris-based SupGP data for all 28 satellites from the Starlink G11-23 launch (2025-247) atop a Falcon 9 rocket from Vandenberg SFB on 2025-10-31 at 20:41:10 UTC: spaceflightnow.com/2025/10/31/l.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
November 1, 2025 at 6:54 AM
CelesTrak has ephemeris-based SupGP data for all 28 satellites from the Starlink G11-23 launch (2025-247) atop a Falcon 9 rocket from Vandenberg SFB on 2025-10-31 at 20:41:10 UTC: spaceflightnow.com/2025/10/31/l.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
CelesTrak has pre-launch SupGP data for the Bandwagon-4 launch from Cape Canaveral on 2025-11-02 at 05:09:58.988 UTC: celestrak.org/NORAD/elemen.... Deployment of 18 satellites is set to occur from 05:24:09.428 UTC to 06:23:42.048 UTC. SupGP data is valid from epochs (deployment).
November 1, 2025 at 2:09 AM
CelesTrak has pre-launch SupGP data for the Bandwagon-4 launch from Cape Canaveral on 2025-11-02 at 05:09:58.988 UTC: celestrak.org/NORAD/elemen.... Deployment of 18 satellites is set to occur from 05:24:09.428 UTC to 06:23:42.048 UTC. SupGP data is valid from epochs (deployment).
CelesTrak has GP data for 19 objects from the launch (2025-233) of 18 Qianfan satellites (Group 18) atop a Long March-6A rocket from Taiyuan Satellite Launch Center on Oct 17 at 0708 UTC: www.china-in-space.com/p/qianfan-re.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
October 31, 2025 at 8:48 AM
CelesTrak has GP data for 19 objects from the launch (2025-233) of 18 Qianfan satellites (Group 18) atop a Long March-6A rocket from Taiyuan Satellite Launch Center on Oct 17 at 0708 UTC: www.china-in-space.com/p/qianfan-re.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
CelesTrak has ephemeris-based SupGP data for all 29 satellites from the Starlink G10-37 launch (2025-245) atop a Falcon 9 rocket from Cape Canaveral on 2025-10-29 at 16:35:20 UTC: spaceflightnow.com/2025/10/28/l.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
October 30, 2025 at 3:15 AM
CelesTrak has ephemeris-based SupGP data for all 29 satellites from the Starlink G10-37 launch (2025-245) atop a Falcon 9 rocket from Cape Canaveral on 2025-10-29 at 16:35:20 UTC: spaceflightnow.com/2025/10/28/l.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
CelesTrak has GP data for 10 of 21 objects from the launch (2025-230) of 21 Tranche 1 Transport Layer C satellites atop a Falcon 9 rocket from Vandenberg SFB on Oct 15 at 2306 UTC: spaceflightnow.com/2025/10/14/l.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
October 28, 2025 at 10:10 PM
CelesTrak has GP data for 10 of 21 objects from the launch (2025-230) of 21 Tranche 1 Transport Layer C satellites atop a Falcon 9 rocket from Vandenberg SFB on Oct 15 at 2306 UTC: spaceflightnow.com/2025/10/14/l.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
CelesTrak has ephemeris-based SupGP data for all 28 satellites from the Starlink G11-21 launch (2025-244) atop a Falcon 9 rocket from Vandenberg SFB on 2025-10-28 at 00:43:49 UTC: spaceflightnow.com/2025/10/26/l.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
October 28, 2025 at 3:18 PM
CelesTrak has ephemeris-based SupGP data for all 28 satellites from the Starlink G11-21 launch (2025-244) atop a Falcon 9 rocket from Vandenberg SFB on 2025-10-28 at 00:43:49 UTC: spaceflightnow.com/2025/10/26/l.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
CelesTrak has GP data for 1 object from the launch (2025-241) of HTV-X 1 atop a H3 rocket from Tanegashima Space Center on Oct 26 at 0000 UTC: www.nasaspaceflight.com/2025/10/jaxa.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
October 27, 2025 at 8:43 AM
CelesTrak has GP data for 1 object from the launch (2025-241) of HTV-X 1 atop a H3 rocket from Tanegashima Space Center on Oct 26 at 0000 UTC: www.nasaspaceflight.com/2025/10/jaxa.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
CelesTrak has ephemeris-based SupGP data for all 28 satellites from the Starlink G10-21 launch (2025-243) atop a Falcon 9 rocket from Cape Canaveral on 2025-10-26 at 15:00:40 UTC: spaceflightnow.com/2025/10/25/l.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
October 26, 2025 at 11:13 PM
CelesTrak has ephemeris-based SupGP data for all 28 satellites from the Starlink G10-21 launch (2025-243) atop a Falcon 9 rocket from Cape Canaveral on 2025-10-26 at 15:00:40 UTC: spaceflightnow.com/2025/10/25/l.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
CelesTrak has GP data for 3 objects from the launch (2025-242) of Gaofen-14 02 atop a Long March-3B rocket from Xichang Satellite Launch Center on Oct 26 at 0355 UTC: www.china-in-space.com/p/new-mappin.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
October 26, 2025 at 9:07 PM
CelesTrak has GP data for 3 objects from the launch (2025-242) of Gaofen-14 02 atop a Long March-3B rocket from Xichang Satellite Launch Center on Oct 26 at 0355 UTC: www.china-in-space.com/p/new-mappin.... Data for the launch can be found at: celestrak.org/NORAD/elemen....