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🛰️ SATELLITE · HISTORICAL RECORD

BRO-4

Re-entered 14 Feb 2025

BRO-4 (NORAD 49066, COSPAR 2021-073A) was a F satellite that re-entered Earth's atmosphere on 14 Feb 2025, launched on 17 Aug 2021 on the Pleiades-Neo 4 mission. It was operated by UNSEEN as part of the Unseen programme. The spacecraft was built by GOMSP on the Cubesat 6U bus, with a mass of 10 kg. Like most satellites in low orbits, it was gradually slowed by atmospheric drag until re-entry. Historical record from Orbital Radar's satellite archive, cross-referenced with the live satellite catalogue.

2021
launched
2025
re-entered
4
years on orbit
10
kg mass

Lifecycle

Launched17 Aug 2021 · on the Pleiades-Neo 4 mission
Operational1 Jan 2025 · entered service
Retired1 Jan 2025 · end of operational service
Re-entered14 Feb 2025 · atmospheric re-entry — object destroyed

Specifications

NORAD ID49066
COSPAR2021-073A
TypeSatellite
OperatorUNSEEN
Country / StateF
ManufacturerGOMSP
BusCubesat 6U
Mass10 kg
ProgrammeUnseen
CategorySIG
OrbitLEO (LLEO/S)
Altitude522 × 561 km
Inclination97.6°

Frequently asked questions

What happened to BRO-4?

BRO-4 re-entered Earth's atmosphere on 14 Feb 2025, ending a mission that began with its launch in 2021. Objects in low orbits are gradually slowed by atmospheric drag until they fall back and burn up on re-entry.

When did BRO-4 re-enter the atmosphere?

BRO-4 re-entered on 14 Feb 2025, according to Orbital Radar's historical catalogue records.

Who operated and built BRO-4?

BRO-4 was operated by UNSEEN and built by GOMSP (F).

Launched together

RADCUBERe-entered 2024SunstormRe-entered 2024LEDSATRe-entered 2025Pleiades Neo 4NORAD 49070
Historical record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-09-06.