CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
2001-0105
STEP M4
STEP M4 (NORAD 25013) re-entered Earth’s atmosphere on 31 March 2001, after 3 years, 5 months in orbit.
Official date
NORAD number
25013
International designator
1997-063A
Object type
Spacecraft
Country
United States
Launched
22 Oct 1997Air launch (Atlantic)
Re-entered (UTC)
31 Mar 2001UTC calendar day
Time in orbit
3 years, 5 months1,256 days
How it ended
Re-entered (natural decay)
Latitude range
44.9°N to 44.9°SFinal inclination 44.9°
Mass
403 kg
Operator
USAF STP
Built by
TRW(C) / OSC-McLean
Bus
LEOStar T-200
Programme
STP1
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 44.9°, allowed a re-entry anywhere between 44.9°N and 44.9°S.
Life in orbit
3 years, 5 monthsSTEP M4’s lowest and highest points above Earth, week by week, from its tracking history.
From the same launch
1997-063
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/2001-0105
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/2001-0105
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.