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🛰️ SATELLITE · HISTORICAL RECORD

Kepler-21

Re-entered 10 Jul 2026

Kepler-21 (NORAD 56218, COSPAR 2023-054AS) was a CA satellite that re-entered Earth's atmosphere on 10 Jul 2026, launched on 15 Apr 2023 on the Transporter-7 mission. It was operated by Kepler Comms as part of the Kepler programme. The spacecraft was built by KEPLER/UTIAS on the Cubesat 6U bus, with a mass of 15 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.

2023
launched
2026
re-entered
3
years on orbit
15
kg mass

Lifecycle

Launched15 Apr 2023 · on the Transporter-7 mission
Operational1 May 2025 · entered service
Retired1 May 2025 · end of operational service
Re-entered10 Jul 2026 · atmospheric re-entry — object destroyed

Specifications

NORAD ID56218
COSPAR2023-054AS
TypeSatellite
OperatorKepler Comms
Country / StateCA
ManufacturerKEPLER/UTIAS
BusCubesat 6U
Mass15 kg
ProgrammeKepler
CategoryCOM
OrbitLEO (LLEO/S)
Altitude494 × 507 km
Inclination97.4°

Frequently asked questions

What happened to Kepler-21?

Kepler-21 re-entered Earth's atmosphere on 10 Jul 2026, ending a mission that began with its launch in 2023. Objects in low orbits are gradually slowed by atmospheric drag until they fall back and burn up on re-entry.

When did Kepler-21 re-enter the atmosphere?

Kepler-21 re-entered on 10 Jul 2026, according to Orbital Radar's historical catalogue records.

Who operated and built Kepler-21?

Kepler-21 was operated by Kepler Comms and built by KEPLER/UTIAS (CA).

Launched together

IMECENORAD 56178NuSat-38NORAD 56202NuSat-37NORAD 56203GHGSAT-C6NORAD 56204FACSAT-2Re-entered 2025Lemur-2Re-entered 2024Pleiades Yearling 2.0Re-entered 2024Taifa-1Re-entered 2025
Historical record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-09-16.