HomeLibraryRe-entered SatellitesHARP
🛰️ SATELLITE · HISTORICAL RECORD

HARP

Re-entered 4 Apr 2022

HARP (NORAD 45256, COSPAR 1998-067QZ) was a US satellite that re-entered Earth's atmosphere on 4 Apr 2022, launched on 2 Nov 2019 on the 77KM No. 17501 mission. It was operated by UMBC as part of the UMBC programme. The spacecraft was built by UMBC on the Cubesat 3U bus, with a mass of 4 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.

2019
launched
2022
re-entered
3
years on orbit
4
kg mass

Lifecycle

Launched2 Nov 2019 · on the 77KM No. 17501 mission
Operational1 Mar 2022 · entered service
Retired1 Apr 2022 · end of operational service
Re-entered4 Apr 2022 · atmospheric re-entry — object destroyed

Specifications

NORAD ID45256
COSPAR1998-067QZ
TypeSatellite
OperatorUMBC
Country / StateUS
ManufacturerUMBC
BusCubesat 3U
Mass4 kg
ProgrammeUMBC
CategoryTECH
OrbitLEO (LLEO/I)
Altitude400 × 428 km
Inclination51.6°

Frequently asked questions

What happened to HARP?

HARP re-entered Earth's atmosphere on 4 Apr 2022, ending a mission that began with its launch in 2019. Objects in low orbits are gradually slowed by atmospheric drag until they fall back and burn up on re-entry.

When did HARP re-enter the atmosphere?

HARP re-entered on 4 Apr 2022, according to Orbital Radar's historical catalogue records.

Who operated and built HARP?

HARP was operated by UMBC and built by UMBC (US).

Launched together

STPSat-4Re-entered 2019SOCRATESRe-entered 2022PhoenixRe-entered 2022MVP-ARe-entered 2022RadSat-URe-entered 2022Cygnus NG-12Re-entered 2019Orbital Factory 2Re-entered 2023AC-14ARe-entered 2023
Historical record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-09-06.