🛰️ SATELLITE · HISTORICAL RECORD
[NRO Unk Smallsat 16]
Historical record[NRO Unk Smallsat 16] (NORAD 63597, COSPAR 2025-077B) is a historical US catalogue entry no longer tracked in the live catalogue, launched on 16 Apr 2025 on the NROL-174 Asterion mission. It was operated by NROC as part of the NRO TS programme. The spacecraft was built by BALL? on the BCP-2000? bus, with a mass of 250 kg. Historical record from Orbital Radar's satellite archive, cross-referenced with the live satellite catalogue.
2025
launched
1
year on orbit
250
kg mass
Lifecycle
Launched16 Apr 2025 · on the NROL-174 Asterion mission
Specifications
NORAD ID63597
COSPAR2025-077B
TypeSatellite
OperatorNROC
Country / StateUS
ManufacturerBALL?
BusBCP-2000?
Mass250 kg (200 kg dry)
ProgrammeNRO TS
CategorySIG?*
OrbitLEO (LEO/I)
Altitude1,098 × 1,125 km
Inclination63.4°
Frequently asked questions
What happened to [NRO Unk Smallsat 16]?
[NRO Unk Smallsat 16] is a historical catalogue entry from a 2025 launch. It is not currently tracked in the live catalogue — typically meaning it has decayed, been retired, or its tracking elements have lapsed.
Who operated and built [NRO Unk Smallsat 16]?
[NRO Unk Smallsat 16] was operated by NROC and built by BALL? (US).
Launched together
Historical record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-09-06.