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// astronomy · 2021

GRBAlpha

Gamma ray burst detection technological demo nanosatellite. GRBAlpha was launched on March 22, 2021 aboard a Soyuz-2-1A from Baikonur. Latest status in GCAT: reentered (orbital decay) (Jun 10, 2025).

COSPAR 2021-022ADNORAD 47959Slovakia

Identity

Name in GCAT
GRBAlpha
International designator
2021-022AD
NORAD catalog number
47959
GCAT identifier
S47959
UN registration
ST/SG/SER.E/980

Mission

Mission type
Astronomy
Use
Amateur / academic
Program
TUKE
Owner
TUKE
Country
Slovakia
Builder
Technical University of Kosice
Platform (bus)
Cubesat 1U

Launch

Date
March 22, 2021 · 06:07 UTC
Launch record
2021-022Success
Spaceport
Baikonur · pad LC31

Orbit and fate

Orbit class (GCAT)
LLEO/S
Perigee
535 km
Apogee
562 km
Inclination
97.57°
Status
Reentered (orbital decay)
Status date
June 10, 2025
Last known active
March 2023
End of operations
Jun 9, 2025

Size

Mass
1 kg
Dry mass
1 kg
Length
0.1 m
Diameter
0.10 m
Span
0.1 m

Source: GCAT payload, deep-space and lander catalogs, Jonathan C. McDowell (CC BY 4.0); Wikidata Q106168897 (CC0).