Satellite Catalog Number (English Wikipedia)

Kelso, T.S. (January 1998). "Frequently Asked Questions: Two-Line Element Set Format". Satellite Times. Retrieved June 23, 2019.
Kelso, T.S. "SATCAT Boxscore". CelesTrak. Retrieved Sep 13, 2026.

esa.int (Global: 1,073^rd place; English: 1,115^th place)

"Space debris by the numbers". ESA. 12 September 2023. Retrieved 21 October 2023.

"Small Satellite Debris Catalog Maintenance Issues" (PDF). NASA. October 1, 1991. Retrieved June 23, 2019.

McDowell, Jonathan. "Jonathan's Space Report | GCAT". planet4589.org. Retrieved 2026-09-27.
McDowell, Jonathan. "GCAT: General Catalog of Artificial Space Objects". Jonathan's Space Report. Archived from the original on 21 August 2026. Retrieved 2026-09-14.

"Basic Description of the Two Line Element (TLE) Format". www.space-track.org. Retrieved 2026-09-27.
"Frequently Asked Questions". Space-Track.org. Retrieved June 23, 2019. 10 centimeter diameter or "softball size" is the typical minimum size object that current sensors can track and 18 SPCS maintains in the catalog.
"Space-Track.org Frequently Asked Questions (FAQ)". www.space-track.org. Retrieved 2026-09-27.
"Space-Track.org". www.space-track.org. Retrieved 2026-09-07.
"Space-Track.org Space Scoreboard". Space-Track.org. Retrieved Nov 15, 2022.

"US Policy and Capabilities on SSA" (PDF). Secure World Foundation. 24 January 2019. Archived from the original (PDF) on 3 October 2019. Retrieved 3 October 2019.

@SpaceTrackOrg (25 November 2020). "The satellite catalog is growing faster than ever" (Tweet). Retrieved 1 December 2020 – via Twitter.

McDowell, Jonathan. "GCAT: General Catalog of Artificial Space Objects". Jonathan's Space Report. Archived from the original on 21 August 2026. Retrieved 2026-09-14.
"US Policy and Capabilities on SSA" (PDF). Secure World Foundation. 24 January 2019. Archived from the original (PDF) on 3 October 2019. Retrieved 3 October 2019.