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]
CelesTrak has ephemeris-based SupGP data for all 25 satellites from the Starlink G17-33 launch (2026-025) atop a Falcon 9 rocket from Vandenberg SFB on 2026-02-07 at 20:58:09 UTC: spaceflightnow.com/2026/02/07/l.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
February 8, 2026 at 9:17 AM
CelesTrak has ephemeris-based SupGP data for all 25 satellites from the Starlink G17-33 launch (2026-025) atop a Falcon 9 rocket from Vandenberg SFB on 2026-02-07 at 20:58:09 UTC: spaceflightnow.com/2026/02/07/l.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
CelesTrak has GP data for 4 objects from the launch (2026-024) of an experimental spaceplane atop a Long March-2F rocket from Jiuquan Satellite Launch Center on Feb 7 at ~0358 UTC: www.china-in-space.com/p/chinas-reu.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
February 7, 2026 at 7:24 PM
CelesTrak has GP data for 4 objects from the launch (2026-024) of an experimental spaceplane atop a Long March-2F rocket from Jiuquan Satellite Launch Center on Feb 7 at ~0358 UTC: www.china-in-space.com/p/chinas-reu.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
CelesTrak has GP data for 9 objects from the launch (2026-023) of COSMOS 2600 (not 2597) and multiple other satellites atop a Soyuz-2.1b rocket from Plesetsk Cosmodrom on Feb 5 at 1859 UTC: tass.com/science/2082.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
February 6, 2026 at 8:33 PM
CelesTrak has GP data for 9 objects from the launch (2026-023) of COSMOS 2600 (not 2597) and multiple other satellites atop a Soyuz-2.1b rocket from Plesetsk Cosmodrom on Feb 5 at 1859 UTC: tass.com/science/2082.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
The ephemeris for AMC-21 (used for SupGP), launched 2008-08-14, has stopped updating after circularizing its orbit well above GEO graveyard altitude o/a 2026-01-24. As it appears to have been decommissioned, the CelesTrak SATCAT has been updated: celestrak.org/NORAD/elemen....
February 6, 2026 at 7:46 PM
The ephemeris for AMC-21 (used for SupGP), launched 2008-08-14, has stopped updating after circularizing its orbit well above GEO graveyard altitude o/a 2026-01-24. As it appears to have been decommissioned, the CelesTrak SATCAT has been updated: celestrak.org/NORAD/elemen....
CelesTrak has ephemeris-based SupGP data for all 25 satellites from the Starlink G17-32 launch (2026-022) atop a Falcon 9 rocket from Vandenberg SFB on 2026-02-02 at 15:47:11 UTC: spaceflightnow.com/2026/02/01/l.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
February 3, 2026 at 8:09 AM
CelesTrak has ephemeris-based SupGP data for all 25 satellites from the Starlink G17-32 launch (2026-022) atop a Falcon 9 rocket from Vandenberg SFB on 2026-02-02 at 15:47:11 UTC: spaceflightnow.com/2026/02/01/l.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
XM-3 (RHYTHM), launched 2005-03-01, has completed a full circuit of the GEO belt since circularizing its orbit well above GEO graveyard altitude o/a 2025-11-12. As it appears to have been decommissioned, the CelesTrak SATCAT has been updated: celestrak.org/NORAD/elemen....
February 1, 2026 at 7:24 PM
XM-3 (RHYTHM), launched 2005-03-01, has completed a full circuit of the GEO belt since circularizing its orbit well above GEO graveyard altitude o/a 2025-11-12. As it appears to have been decommissioned, the CelesTrak SATCAT has been updated: celestrak.org/NORAD/elemen....
CelesTrak has GP data for 2 objects from the launch (2026-021) of AlSat-3B atop a Long March-2C rocket from Jiuquan Satellite Launch Center on Jan 31 at 0401 UTC: www.china-in-space.com/p/second-alg.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
February 1, 2026 at 9:02 AM
CelesTrak has GP data for 2 objects from the launch (2026-021) of AlSat-3B atop a Long March-2C rocket from Jiuquan Satellite Launch Center on Jan 31 at 0401 UTC: www.china-in-space.com/p/second-alg.... 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 G6-101 launch (2026-020) atop a Falcon 9 rocket from Cape Canaveral on 2026-01-30 at 07:22:00 UTC: spaceflightnow.com/2026/01/30/l.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
January 30, 2026 at 11:52 PM
CelesTrak has ephemeris-based SupGP data for all 29 satellites from the Starlink G6-101 launch (2026-020) atop a Falcon 9 rocket from Cape Canaveral on 2026-01-30 at 07:22:00 UTC: spaceflightnow.com/2026/01/30/l.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
CelesTrak has GP data for 3 objects from the launch (2026-019) of NEONSAT-1A atop an Electron rocket from Māhia Peninsula, NZ on Jan 30 at 0121 UTC: spacenews.com/rocket-lab-l.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
January 30, 2026 at 11:11 PM
CelesTrak has GP data for 3 objects from the launch (2026-019) of NEONSAT-1A atop an Electron rocket from Māhia Peninsula, NZ on Jan 30 at 0121 UTC: spacenews.com/rocket-lab-l.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
CelesTrak has ephemeris-based SupGP data for all 25 satellites from the Starlink G17-19 launch (2026-018) atop a Falcon 9 rocket from Vandenberg SFB on 2026-01-29 at 17:53:20 UTC: spaceflightnow.com/2026/01/29/l.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
January 30, 2026 at 10:48 PM
CelesTrak has ephemeris-based SupGP data for all 25 satellites from the Starlink G17-19 launch (2026-018) atop a Falcon 9 rocket from Vandenberg SFB on 2026-01-29 at 17:53:20 UTC: spaceflightnow.com/2026/01/29/l.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
CelesTrak has GP data for 1 object from the launch (2026-017) of GPS B3-9 atop a Falcon 9 rocket from Cape Canaveral on Jan 28 at 0453 UTC: spaceflightnow.com/2026/01/26/l.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
January 30, 2026 at 10:36 PM
CelesTrak has GP data for 1 object from the launch (2026-017) of GPS B3-9 atop a Falcon 9 rocket from Cape Canaveral on Jan 28 at 0453 UTC: spaceflightnow.com/2026/01/26/l.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
CelesTrak has GP data for 4 objects from the launch (2026-015) of 2 satellites atop an Electron rocket from Māhia Peninsula, NZ on Jan 22 at 1052 UTC: spacenews.com/rocket-lab-l.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
January 28, 2026 at 7:49 AM
CelesTrak has GP data for 4 objects from the launch (2026-015) of 2 satellites atop an Electron rocket from Māhia Peninsula, NZ on Jan 22 at 1052 UTC: spacenews.com/rocket-lab-l.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
CelesTrak has ephemeris-based SupGP data for all 25 satellites from the Starlink G17-20 launch (2026-016) atop a Falcon 9 rocket from Vandenberg SFB on 2026-01-25 at 17:30:39 UTC: spaceflightnow.com/2026/01/25/l.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
January 26, 2026 at 6:08 PM
CelesTrak has ephemeris-based SupGP data for all 25 satellites from the Starlink G17-20 launch (2026-016) atop a Falcon 9 rocket from Vandenberg SFB on 2026-01-25 at 17:30:39 UTC: spaceflightnow.com/2026/01/25/l.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
18 SDS has cataloged 9 objects from the launch (2026-011) of NROL-105 atop a Falcon 9 rocket from Vandenberg SFB on Jan 17 at 0439 UTC: spaceflightnow.com/2026/01/16/l.... SATCAT data can be found at: celestrak.org/satcat/table.... If data becomes available, see: celestrak.org/NORAD/elemen....
January 24, 2026 at 2:54 AM
18 SDS has cataloged 9 objects from the launch (2026-011) of NROL-105 atop a Falcon 9 rocket from Vandenberg SFB on Jan 17 at 0439 UTC: spaceflightnow.com/2026/01/16/l.... SATCAT data can be found at: celestrak.org/satcat/table.... If data becomes available, see: celestrak.org/NORAD/elemen....
CelesTrak has GP data for 4 objects from the launch (2026-010) of Tianqi 37-40 atop a Ceres-1S rocket from the waters off Shandong Province on Jan 15 at 2010 UTC: www.china-in-space.com/p/commercial.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
January 22, 2026 at 11:41 PM
CelesTrak has GP data for 4 objects from the launch (2026-010) of Tianqi 37-40 atop a Ceres-1S rocket from the waters off Shandong Province on Jan 15 at 2010 UTC: www.china-in-space.com/p/commercial.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
CelesTrak has GP data for 40 objects from the launch (2026-004) of Twilight with 40 rideshare passengers atop a Falcon 9 rocket from Vandenberg SFB on Jan 11 at 1344 UTC: spaceflightnow.com/2026/01/10/l.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
January 22, 2026 at 11:40 PM
CelesTrak has GP data for 40 objects from the launch (2026-004) of Twilight with 40 rideshare passengers atop a Falcon 9 rocket from Vandenberg SFB on Jan 11 at 1344 UTC: spaceflightnow.com/2026/01/10/l.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
CelesTrak has ephemeris-based SupGP data for all 25 satellites from the Starlink G17-30 launch (2026-014) atop a Falcon 9 rocket from Vandenberg SFB on 2026-01-22 at 05:47:29 UTC: spaceflightnow.com/2026/01/21/l.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
January 22, 2026 at 11:23 PM
CelesTrak has ephemeris-based SupGP data for all 25 satellites from the Starlink G17-30 launch (2026-014) atop a Falcon 9 rocket from Vandenberg SFB on 2026-01-22 at 05:47:29 UTC: spaceflightnow.com/2026/01/21/l.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
CelesTrak has GP data for 7 of 9+ objects from the launch (2026-013) of GuoWang Group 19 atop a Long March-12 rocket from Wenchang Space Launch Site on Jan 19 at 0748 UTC: www.china-in-space.com/p/second-com.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
January 21, 2026 at 12:51 AM
CelesTrak has GP data for 7 of 9+ objects from the launch (2026-013) of GuoWang Group 19 atop a Long March-12 rocket from Wenchang Space Launch Site on Jan 19 at 0748 UTC: www.china-in-space.com/p/second-com.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
No SATCAT data from 18 SDS for 2026-004 (Twilight, 40+), -005 (Starlink G6-97, 29), -008 (Starlink G6-98, 29), -011 (NROL-105, ?), -012 (Starlink G6-100, 29), -013 (GuoWang Group 19, 10): celestrak.org/satcat/table.... In addition, no GP for those or 2026-010 (Tianqi 37-40, 4+).
Is this acceptable?
Is this acceptable?
January 20, 2026 at 3:06 AM
No SATCAT data from 18 SDS for 2026-004 (Twilight, 40+), -005 (Starlink G6-97, 29), -008 (Starlink G6-98, 29), -011 (NROL-105, ?), -012 (Starlink G6-100, 29), -013 (GuoWang Group 19, 10): celestrak.org/satcat/table.... In addition, no GP for those or 2026-010 (Tianqi 37-40, 4+).
Is this acceptable?
Is this acceptable?
For some reason, GPS B3-4 (SSC 46826) is now on the 'Lost List' and hasn't been tracked by 18 SDS since Dec 16: celestrak.org/NORAD/elemen.... This despite their data being within 25 km of the GPS almanac-based position used to produce CelesTrak's SupGP data: celestrak.org/NORAD/elemen....
January 19, 2026 at 10:02 PM
For some reason, GPS B3-4 (SSC 46826) is now on the 'Lost List' and hasn't been tracked by 18 SDS since Dec 16: celestrak.org/NORAD/elemen.... This despite their data being within 25 km of the GPS almanac-based position used to produce CelesTrak's SupGP data: celestrak.org/NORAD/elemen....
NOAA is predicting elevated geomagnetic activity for Jan 19 & 20: celestrak.org/SpaceData/.
January 19, 2026 at 9:18 PM
NOAA is predicting elevated geomagnetic activity for Jan 19 & 20: celestrak.org/SpaceData/.
CelesTrak has ephemeris-based SupGP data for all 29 satellites from the Starlink G6-100 launch (2026-012) atop a Falcon 9 rocket from Cape Canaveral on 2026-01-18 at 23:31:40 UTC: spaceflightnow.com/2026/01/18/l.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
January 19, 2026 at 5:29 PM
CelesTrak has ephemeris-based SupGP data for all 29 satellites from the Starlink G6-100 launch (2026-012) atop a Falcon 9 rocket from Cape Canaveral on 2026-01-18 at 23:31:40 UTC: spaceflightnow.com/2026/01/18/l.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
1/ 18 SDS has cataloged an object from a launch out of Jiuquan Satellite Launch Center on Jan 17 (celestrak.org/satcat/table...). The only launch from JSC was the Ceres-2 demo, which is reported to have failed shortly after liftoff, destroying all payloads (www.china-in-space.com/p/new-commer...).
January 17, 2026 at 6:59 PM
1/ 18 SDS has cataloged an object from a launch out of Jiuquan Satellite Launch Center on Jan 17 (celestrak.org/satcat/table...). The only launch from JSC was the Ceres-2 demo, which is reported to have failed shortly after liftoff, destroying all payloads (www.china-in-space.com/p/new-commer...).
CelesTrak has GP data for 2 objects from the launch (2026-009) of AlSat-3A atop a Long March-2C rocket from Jiuquan Satellite Launch Center on Jan 15 at 0401 UTC: www.china-in-space.com/p/algerian-r.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
January 15, 2026 at 10:21 PM
CelesTrak has GP data for 2 objects from the launch (2026-009) of AlSat-3A atop a Long March-2C rocket from Jiuquan Satellite Launch Center on Jan 15 at 0401 UTC: www.china-in-space.com/p/algerian-r.... Data for the launch can be found at: celestrak.org/NORAD/elemen....
LUCH (OLYMP-K 1), launched 2014-09-27, has completed a full circuit of the GEO belt since circularizing its orbit well above GEO graveyard altitude o/a 2025-10-22. As it appears to have been decommissioned, the CelesTrak SATCAT has been updated: celestrak.org/NORAD/elemen....
January 15, 2026 at 9:19 AM
LUCH (OLYMP-K 1), launched 2014-09-27, has completed a full circuit of the GEO belt since circularizing its orbit well above GEO graveyard altitude o/a 2025-10-22. As it appears to have been decommissioned, the CelesTrak SATCAT has been updated: celestrak.org/NORAD/elemen....