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	53.458°
Eccentricity	0.81076
RA ascending node	8.115 hr
Argument perigee	310.877°
Mean anomaly	0.130°
Orbital period	3809.165 min
Epoch of osculation	02 Jan 2026, 18:34

See historical orbital elements »

Derived Quantities

Min Altitude	8918.6 km
Mean Altitude	74423.2 km
Peak Altitude	139927.7 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