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// space science · 1997

STEP M4

Failed American military technology demonstration satellite. STEP M4 was launched on October 22, 1997 aboard a Pegasus XL from Wallops. Latest status in GCAT: reentered (orbital decay) (Mar 31, 2001).

COSPAR 1997-063ANORAD 25013United States

Identity

Name in GCAT
STEP M4
Other names
STP P95-1:PN
International designator
1997-063A
NORAD catalog number
25013
GCAT identifier
S25013
UN registration
ST/SG/SER.E/339

Mission

Mission type
Space science
Use
Civil government
Program
STP1
Country
United States
Builder
TRW Inc. Chantilly
Platform (bus)
LEOStar T-200

Launch

Date
October 22, 1997 · 13:13 UTC
Launch record
1997-063Success
Spaceport
Wallops · pad RW04/22?

Orbit and fate

Orbit class (GCAT)
LLEO/I
Perigee
432 km
Apogee
501 km
Inclination
44.97°
Status
Reentered (orbital decay)
Status date
March 31, 2001
Last known active
Oct 22, 1997
End of operations
Oct 22, 1997

Size

Mass
403 kg
Dry mass
300 kg
Length
1.5 m
Diameter
0.90 m
Span
1.5 m

Source: GCAT payload, deep-space and lander catalogs, Jonathan C. McDowell (CC BY 4.0); Wikidata Q111498579 (CC0).