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Satellite Catalog Number

The Satellite Catalog Number (also known as NORAD (North American Aerospace Defense) Catalog Number, NORAD ID, USSPACECOM object number or simply catalog number, among similar variants) is a sequential nine-digit number assigned by the United States Space Command (USSPACECOM) in the order of launch or discovery to all artificial objects in the orbits of Earth and those that left Earth's orbit. The first catalogued object, catalog number 1, is the Sputnik 1 launch vehicle, with the Sputnik 1 satellite having been assigned catalog number 2.

Objects that fail to orbit or orbit for a short time are not catalogued. The minimum object size in the catalog is 10 centimeters in diameter. As of June 11, 2021[update], the catalog lists 48,833 objects, including 11,264 satellites that have been launched into orbit after 1957. 21,197 of the objects were actively tracked while 1,374 were lost. ESA estimates there are about 34,000 pieces of orbiting debris that are large enough for USSTRATCOM to track as of January 2019.

Permanently catalogued objects are assigned a number from 1 to 69,999 or above 99,999. Space-Track is expected to start publishing objects greater than 99,999 in 2020 starting with debris discovered by Space Fence.

Space Command shares the catalog via space-track.org, which is maintained by the 18th Space Control Squadron (18 SPCS).

Initially, the catalog was maintained by NORAD. From 1985 onwards, USSPACECOM was tasked to detect, track, identify, and maintain a catalog of all human-made objects in Earth orbit. In 2002, USSPACECOM was disestablished and merged with the United States Strategic Command (USSTRATCOM). However, USSPACECOM was reestablished in 2019.

Before 2020, the catalog number was limited to five digits due to the TLE format limitation. In 2020, Space-Track started to provide data in CCSDS OMM (Orbit Mean-Elements Message) format, which increased the maximum catalog number to 999,999,999.

  1. Kelso, T.S. (January 1998). "Frequently Asked Questions: Two-Line Element Set Format". Satellite Times. RetrievedJune 23, 2019.
  2. "SL-1 R/B Satellite details 1957-001A NORAD 1". RetrievedJanuary 9, 2018.
  3. "Frequently Asked Questions". Space-Track.org. RetrievedJuly 14, 2019. Q: What criteria are used to determine whether an orbiting object should receive a catalogue number and International Designation? A: We must be able to determine who it belongs to, what launch it correlates to, and the object must be able to be maintained (tracked well).
  4. "Frequently Asked Questions". Space-Track.org. RetrievedJune 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.
  5. Kelso, T.S. "SATCAT Boxscore". CelesTrak. RetrievedJune 23, 2019.
  6. Kelso, T.S. "TLE History Statistics". CelesTrak. RetrievedJune 23, 2019.
  7. "Space debris by the numbers". ESA. January 2019. RetrievedJune 23, 2019.
  8. "Conjunction Summary Message Guide"(PDF). space-track.org. RetrievedMarch 30, 2020.
  9. Kelso, T.S. (May 27, 2020). "A New Way to Obtain GP Data (aka TLEs)". CelesTrak. RetrievedJune 3, 2020.
  10. @SpaceTrackOrg (25 November 2020). "The satellite catalog is growing faster than ever" (Tweet). Retrieved1 December 2020 – via Twitter.
  11. "USSTRATCOM expands SSA data on Space-Track.org". Air Force Space Command. October 10, 2018. RetrievedJune 23, 2019.
  12. "Small Satellite Debris Catalog Maintenance Issues"(PDF). NASA. October 1, 1991. RetrievedJune 23, 2019.
  13. "US Policy and Capabilities on SSA"(PDF). Secure World Foundation. 24 January 2019. Retrieved3 October 2019.

Satellite Catalog Number
Satellite Catalog Number Language Watch Edit The Satellite Catalog Number also known as NORAD North American Aerospace Defense Catalog Number NORAD ID USSPACECOM object number or simply catalog number among similar variants is a sequential nine digit number assigned by the United States Space Command USSPACECOM in the order of launch or discovery to all artificial objects in the orbits of Earth and those that left Earth s orbit 1 The first catalogued object catalog number 1 is the Sputnik 1 launch vehicle with the Sputnik 1 satellite having been assigned catalog number 2 2 Objects that fail to orbit or orbit for a short time are not catalogued 3 The minimum object size in the catalog is 10 centimeters in diameter 4 As of June 11 2021 update the catalog lists 48 833 objects including 11 264 satellites that have been launched into orbit after 1957 5 21 197 of the objects were actively tracked while 1 374 were lost 6 ESA estimates there are about 34 000 pieces of orbiting debris that are large enough for USSTRATCOM to track as of January 2019 7 Permanently catalogued objects are assigned a number from 1 to 69 999 8 or above 99 999 Space Track is expected to start publishing objects greater than 99 999 in 2020 9 starting with debris discovered by Space Fence 10 Space Command shares the catalog via space track org 11 which is maintained by the 18th Space Control Squadron 18 SPCS History EditInitially the catalog was maintained by NORAD From 1985 onwards USSPACECOM was tasked to detect track identify and maintain a catalog of all human made objects in Earth orbit 12 In 2002 USSPACECOM was disestablished and merged with the United States Strategic Command USSTRATCOM However USSPACECOM was reestablished in 2019 13 Before 2020 the catalog number was limited to five digits due to the TLE format limitation In 2020 Space Track started to provide data in CCSDS OMM Orbit Mean Elements Message format which increased the maximum catalog number to 999 999 999 10 See also EditInternational Designator also known as a COSPAR ID Space debris Two line element set TLE United States Space Surveillance NetworkReferences Edit Kelso T S January 1998 Frequently Asked Questions Two Line Element Set Format Satellite Times Retrieved June 23 2019 SL 1 R B Satellite details 1957 001A NORAD 1 Retrieved January 9 2018 Frequently Asked Questions Space Track org Retrieved July 14 2019 Q What criteria are used to determine whether an orbiting object should receive a catalogue number and International Designation A We must be able to determine who it belongs to what launch it correlates to and the object must be able to be maintained tracked well 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 Kelso T S SATCAT Boxscore CelesTrak Retrieved June 23 2019 Kelso T S TLE History Statistics CelesTrak Retrieved June 23 2019 Space debris by the numbers ESA January 2019 Retrieved June 23 2019 Conjunction Summary Message Guide PDF space track org Retrieved March 30 2020 Kelso T S May 27 2020 A New Way to Obtain GP Data aka TLEs CelesTrak Retrieved June 3 2020 a b SpaceTrackOrg 25 November 2020 The satellite catalog is growing faster than ever Tweet Retrieved 1 December 2020 via Twitter USSTRATCOM expands SSA data on Space Track org Air Force Space Command October 10 2018 Retrieved June 23 2019 Small Satellite Debris Catalog Maintenance Issues PDF NASA October 1 1991 Retrieved June 23 2019 US Policy and Capabilities on SSA PDF Secure World Foundation 24 January 2019 Retrieved 3 October 2019 External links EditThe catalog Space Track org CelesTrak Satellite Catalog a partial copy of Space Track org catalog Retrieved from https en wikipedia org w index php title Satellite Catalog Number amp oldid 1054127328, wikipedia, wiki, book,

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