Launch Details

Launched	22 July 1999
Flight ended	–
Status	Operational
Categories	Space & Earth Science Active satellites
Launch site	Air Force Eastern Test Range, Florida, USA
Owner	United States
NORAD ID	25867
COSPAR ID	1999-040B
Observing

Current orbital elements

Inclination	53.117°
Eccentricity	0.81281
RA ascending node	8.156 hr
Argument perigee	310.835°
Mean anomaly	0.197°
Orbital period	3809.354 min
Epoch of osculation	17 Dec 2025, 21:46

See historical orbital elements »

Derived Quantities

Min Altitude	8753.2 km
Mean Altitude	74425.8 km
Peak Altitude	140098.5 km

Launched alongside

STS 93 IUS R/B(1) IUS R/B(2) IUS DEB IUS DEB IUS DEB IUS DEB IUS DEB IUS DEB IUS DEB IUS DEB IUS DEB IUS DEB IUS DEB