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SpaceFrance

Syracuse 4

Military communications satellitesIn servicePending verification

Also known as: Comsat-NG

SpaceFRA
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Fact cardConfidence · Source
System
TypeMilitary communications satellites
Alternative designationsComsat-NG
ProliferationOrigin country only
Satellites24A (2021), 4B (2023)Med[1]
First launch2021Med[1]
Dimensions and weight
Mass3,852 kg8,492 lbSyracuse 4AMed[1]
Orbit
Orbit regimeGEOMed[1]
Design life15 yearsMed[1]
Catalogued on orbit2Payloads with current element sets in the public catalog, active or not.High[2]
Active (CelesTrak)2Count in the CelesTrak active satellites list, which estimates operational status.Med[2]
Perigee35,779–35,786 kmActive satellites per CelesTrak, element epoch about 2026-11-08.High[2]
Apogee35,787–35,792 kmActive satellites per CelesTrak, element epoch about 2026-11-08.High[2]
Orbital period1,436.1 minActive satellites per CelesTrak, element epoch about 2026-11-08.High[2]
Inclination0.01–0.02 °Active satellites per CelesTrak, element epoch about 2026-11-08.High[2]
Catalogued satellites · 2[2]
NameNORADCOSPARPerigee kmApogee kmIncl. °Period minStatus
SYRACUSE 4A493332021-095B35,77935,7920.011436.1Active
SYRACUSE 4B572142023-093B35,78635,7870.021436.1Active

Mean elements at epoch 2026-11-08 or later. Perigee and apogee are computed from mean motion and eccentricity and are approximate. Status follows the CelesTrak active list.

Summary

French X- and Ka-band military communications satellites with active anti-jam antennas.

Draft entry. Values come from the cited public sources and are awaiting editor verification.
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Operators
France
Sources
  1. Syracuse 4A (Comsat-NG 1), Gunter's Space Page
    Tier 3 · checked 2026-11-08
  2. NORAD GP element sets (current data), CelesTrak (data from the U.S. Space Force 18th/19th Space Defense Squadron catalog)
    Published/updated 2026-11-08 · Tier 1 · checked 2026-11-08
Change log
  • 2026-11-08 Entry created from cited open sources
  • 2026-11-08 Orbital elements from CelesTrak GP data (epoch about 2026-11-08): 2 catalogued, 2 active.