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🛰️ SATELLITE · HISTORICAL RECORD

ChallengeOne

Re-entered 6 May 2025

ChallengeOne (NORAD 47956, COSPAR 2021-022AA) was a TN satellite that re-entered Earth's atmosphere on 6 May 2025, launched on 22 Mar 2021 on the Soyuz Rideshare 9 mission. It was operated by TELTN as part of the Telnet programme. The spacecraft was built by TELTRU on the Cubesat 2U bus, with a mass of 2 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
2
kg mass

Lifecycle

Launched22 Mar 2021 · on the Soyuz Rideshare 9 mission
Operational1 Apr 2025 · entered service
Retired1 Apr 2025 · end of operational service
Re-entered6 May 2025 · atmospheric re-entry — object destroyed

Specifications

NORAD ID47956
COSPAR2021-022AA
TypeSatellite
OperatorTELTN
Country / StateTN
ManufacturerTELTRU
BusCubesat 2U
Mass2 kg
ProgrammeTelnet
CategoryCOM
OrbitLEO (LLEO/S)
Altitude535 × 564 km
Inclination97.6°

Frequently asked questions

What happened to ChallengeOne?

ChallengeOne re-entered Earth's atmosphere on 6 May 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 ChallengeOne re-enter the atmosphere?

ChallengeOne re-entered on 6 May 2025, according to Orbital Radar's historical catalogue records.

Who operated and built ChallengeOne?

ChallengeOne was operated by TELTN and built by TELTRU (TN).

Launched together

CAS500-1NORAD 47932BEESAT 6Re-entered 2024KMSLRe-entered 2026GRBAlphaRe-entered 2025OrbiKraft-ZorkiyRe-entered 20253B5GSATRe-entered 2024STECCORe-entered 2024ArduiCubeRe-entered 2023
Historical record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-09-06.