PROX-1

NORAD 44339· COSPAR 2019-036A· Active satellite· Other / Unclassified· LEO

Launch

Launched on Jun 25, 2019 from Launch Complex 39A, United States of America aboard a Falcon Heavy.

Falcon Heavy | STP-2 →

Live · TLE epoch 2026-09-08 09:59 UTC

Orbit class

LEO — Low Earth Orbit (circular, < 2,000 km)

Operator

United States Government

Country

United States

Manufacturer

—

Launched

Jun 25, 2019

Mass

—

Apogee

606 km

Perigee

599 km

Inclination

23.99°

Period

1.61 h

Altitude history

Apogee and perigee for PROX-1 across 14 days of archived orbital elements (15 element sets, one per day).

Trend

Stable

Change

-0.9 km

Rate

-0.06 km/day

Now

599 × 606 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

9 other catalogued objects still in orbit from launch 2019-036 (Falcon Heavy | STP-2).

NPSAT1 · 44340
OTB · 44341
FORMOSAT 7-3 · 44343
DSX · 44344
FORMOSAT 7-1 · 44349
FORMOSAT 7-4 · 44350
FORMOSAT 7-2 · 44351
FORMOSAT 7-6 · 44353
FORMOSAT 7-5 · 44358

Sources & further reading

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