CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
2018-0152
CHALLENGER
CHALLENGER (NORAD 42721) re-entered Earth’s atmosphere on 12 August 2018, after 1 year, 3 months in orbit.
Official date
NORAD number
42721
International designator
1998-067MA
Object type
Spacecraft
Country
United States
Launched
18 Apr 2017Cape Canaveral
Released from
The International Space Station
Re-entered (UTC)
12 Aug 2018UTC calendar day
Time in orbit
1 year, 3 months481 days
How it ended
Re-entered (natural decay)
Latitude range
51.6°N to 51.6°SFinal inclination 51.6°
Mass
2 kg
Operator
Colorado / QBUS
Built by
Colorado
Bus
Cubesat 2U
Programme
UCO
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 51.6°, allowed a re-entry anywhere between 51.6°N and 51.6°S.
Life in orbit
1 year, 3 monthsCHALLENGER’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 12 Aug 2018
1 entryFrom the same launch
2017-019
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/2018-0152
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/2018-0152
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.