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	54.523°
Eccentricity	0.79944
RA ascending node	7.977 hr
Argument perigee	310.712°
Mean anomaly	0.628°
Orbital period	3809.205 min
Epoch of osculation	09 Mar 2026, 21:21

See historical orbital elements »

Derived Quantities

Min Altitude	9833.2 km
Mean Altitude	74423.7 km
Peak Altitude	139014.3 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