CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
2025-1150
Sirius-DZZ
CubeSX-Sirius-HSE
Sirius-DZZ (NORAD 47951) re-entered Earth’s atmosphere on 10 June 2025, after 4 years, 2 months in orbit.
Official dateIdentified from the historical record
NORAD number
47951
International designator
2021-022V
Object type
Spacecraft
Official listing
OBJECT VListed as an unidentified object
Country
Not recorded
Launched
22 Mar 2021Baikonur Cosmodrome
Re-entered (UTC)
10 Jun 2025UTC calendar day
Time in orbit
4 years, 2 months1,541 days
How it ended
Re-entered (natural decay)
Latitude range
82.6°N to 82.6°SFinal inclination 97.4°
Mass
4 kg
Operator
HSE / OTs Sirius
Built by
HSE
Bus
Cubesat 3U
Programme
OTs Sirius
Where it came down
Latitude band its orbit allowedExact position not recorded
No position was recorded for this re-entry. Its final orbit, inclined at 97.4°, allowed a re-entry anywhere between 82.6°N and 82.6°S.
Life in orbit
4 years, 2 monthsSirius-DZZ’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 10 Jun 2025
6 entriesFrom the same launch
2021-0222023-1383DIY-1/ARDUIQUBE2024-0205FEES2024-0567LACUNASAT-2B2024-0881BEESAT-52024-1015BEESAT-62024-10623B5GSAT2024-1088SMOG-12024-1134BEESAT-72024-1200STECCO2024-1487BCCSAT-12024-1536KEPLER-7 (C3PO)2024-1805KEPLER-6 (ROCINANTE)In orbitCAS500-1In orbitGRUS 1CIn orbitGRUS 1BIn orbitGRUS 1EIn orbitGRUS 1D
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/2025-1150
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/2025-1150
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.