Latitude
—
SBIRS
NORAD 41937 · COSPAR 2017-004A · ACTIVE
Orbit: #3583 @ 35779 x 35794 km x 2.4857 deg
CURRENT ORBIT DATA
TLE epoch 2026-10-18 20:31 UTC · 12.6 h old
Orbit history
// altitude & velocity from orbital-data archiveTrend: —
Altitude —
Velocity —
Next visible passes
// click to checkCurrent TLE
// onowactive
SBIRS GEO-4 (USA 273)
1 41937U 17004A 26291.85495741 -.00000162 00000-0 00000-0 0 09999
2 41937 2.4857 46.0081 0001754 152.0148 115.9345 1.00272151035835
TLE data & history
🚀 Launch manifest1 41937U 17004A 26291.85495741 -.00000162 00000-0 00000-0 0 09999
2 41937 2.4857 46.0081 0001754 152.0148 115.9345 1.00272151035835
Spacecraft info
// UCS Satellite DatabaseLaunch date
January 20th 2017
Spacecraft age
9 years, 8 months
Distance travelled
—
Expected lifetime
—
Operator
US Air Force
Purpose
Earth Observation
Orbit class
GEO
Launch site
Cape Canaveral
Launch vehicle
Atlas 5
Contractor
Lockheed Martin Space Systems
Launch mass
4,500 kg
Power
â
Orbit elements
// from current orbital elementsInclination
2.4857°
Period
1436.09 min
Perigee
35779 km
Apogee
35794 km
Eccentricity
0.0001754
RAAN
46.0081°
Arg of Perigee
152.0148°
Mean Motion
1.00272151 rev/d