PROTOMETHEE

NORAD 58321· COSPAR 2023-174BT· Active satellite· Other / Unclassified· SSO

Launch

Launched on Nov 11, 2023 from Space Launch Complex 4E, United States of America aboard a Falcon 9 Block 5.

Falcon 9 Block 5 | Transporter 9 (Dedicated SSO Rideshare) →

Live · TLE epoch 2026-09-08 13:27 UTC

Orbit class

SSO — Sun-Synchronous (LEO at 96–102° inclination)

Operator

CNES

Country

France

Manufacturer

—

Launched

Nov 11, 2023

Mass

—

Apogee

477 km

Perigee

468 km

Inclination

97.37°

Period

1.57 h

Altitude history

Apogee and perigee for PROTOMETHEE across 14 days of archived orbital elements (15 element sets, one per day).

Trend

Stable

Change

-0.4 km

Rate

-0.03 km/day

Now

468 × 477 km

Apogee Perigee

Derived from our own archive of CelesTrak orbital elements, sampled every 3 hours. Short windows show drag and station-keeping; they are not a reentry prediction.

Launched with

41 other catalogued objects still in orbit from launch 2023-174 (Falcon 9 Block 5 | Transporter 9 (Dedicated SSO Rideshare)).

FLOCK 4Q-28 · 58280
FLOCK 4Q-27 · 58282
FLOCK 4Q-26 · 58284
FLOCK 4Q-31 · 58285
FLOCK 4Q-30 · 58286
ICEYE-X31 · 58288
FALCONSAT-10 · 58291
ICEYE-X34 · 58294
SPACEVAN-001 · 58295
PELICAN-1 · 58296
UMBRA-07 · 58297
SPIP · 58298
AETHER-2 · 58299
ION SCV-013 · 58300
LEO EXPRESS 1 · 58301
ICEYE-X35 · 58302
FLOCK 4Q-29 · 58304
FLOCK 4Q-22 · 58306
FLOCK 4Q-33 · 58308
FLOCK 4Q-35 · 58309
FLOCK 4Q-7 · 58318
FLOCK 4Q-2 · 58320
FLOCK 4Q-9 · 58322
OBSERVER-1A · 58323

…and 17 more from this launch.

Sources & further reading

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