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USA 48

NORAD 20355 Payload GEO 1989-090B ● Active
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Altitude (km)
Speed (km/s)
Latitude
Longitude
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🛰️ Orbital Parameters
Perigee
34456 km
Apogee
36854 km
Inclination
17.0°
Period
1429.4 min
Mean Motion
1.00742365 rev/day
TLE Epoch
2026-03-17 04:00:00 UTC
📐 Computed Orbital Characteristics
Avg. Altitude35,655 km
Orbital Velocity11,087 km/h
Velocity3.08 km/s
Orbital Period23 hours 49 minutes
Orbits / Day1.01
Eccentricity0.0285
Semi-Major Axis42,026 km
Est. Orbital LifetimePermanent — geostationary orbit, no atmospheric drag
🚀 Launch & Identity
Country / Operator
🇺🇸 United States
Launch Date
1989-11-23
Launch Site
Cape Canaveral, Florida
Int'l Designator
1989-090B
Object Type
Payload
RCS Size
Unknown
🔗 Constellation / Groups
geo protected plus
📖 About This Object
USA 48 is an active satellite operated by United States, launched on 1989-11-23 from Cape Canaveral, Florida. With over 37 years in orbit, it has far exceeded many satellites’ design lifetimes. It orbits in Geostationary Orbit (GEO) at altitudes between 34,456 km and 36,854 km with an inclination of 17.0°. It travels at approximately 11,087 km/h (3.08 km/s), completing one full orbit every 23 hours 49 minutes — that’s roughly 1.01 orbits per day. It is part of the Geo Protected Plus constellation group. At geostationary altitude, there is no meaningful atmospheric drag — this object will remain in orbit indefinitely unless actively deorbited. Orbital Radar tracks USA 48 in real time using the latest two-line element set (TLE) data, providing live position, altitude, speed and orbital path updated continuously.
🌍 Orbit Context
USA 48 occupies geostationary orbit (GEO) at approximately 35,786 km above the equator. At this precise altitude, the satellite’s orbital period matches the Earth’s rotation — so it appears to hover over a fixed point on the equator. GEO is used primarily for broadcast television, weather monitoring (Meteosat, GOES) and wideband communications. Only about 560 active satellites occupy the GEO belt, but its commercial value is immense: a single GEO slot can cover roughly one-third of the Earth’s surface. This satellite has a non-zero inclination of 17.0°, meaning it traces a small figure-of-eight pattern relative to the ground rather than remaining perfectly stationary. This can indicate an aging satellite whose stationkeeping fuel is running low, or a deliberate inclined-orbit strategy to extend operational life.
❓ Frequently Asked Questions
USA 48 orbits at approximately 35,655 km altitude, where the orbital period matches the Earth’s 24-hour rotation. This means it stays above the same point on the equator at all times. Its actual speed is still 11,087 km/h — it just keeps pace with the ground below. With an inclination of 17.0°, it actually traces a small figure-of-eight pattern rather than remaining perfectly fixed.
USA 48 is operated by United States. It is catalogued by the U.S. Space Surveillance Network under NORAD ID 20355. You can track USA 48 in real time on Orbital Radar’s live tracker.
USA 48 was launched on 1989-11-23 from Cape Canaveral, Florida, one of the busiest launch facilities in the world, operated by NASA and the U.S. Space Force on Florida’s Atlantic coast.
Yes — Orbital Radar tracks USA 48 (NORAD ID 20355) using the latest TLE (two-line element set) data from Space-Track and CelesTrak. Open the live tracker to see its current position, altitude, speed and orbital path updated in real time.
USA 48 travels at approximately 11,087 km/h (6,889 mph) — roughly 3.08 km/s. Despite this high speed, it appears stationary from the ground because it matches the Earth’s rotation. Geostationary satellites are actually slower than LEO satellites because orbital velocity decreases with altitude.
USA 48 is a member of the Geo Protected Plus constellation. Satellites in this group work together to provide coordinated coverage, typically in similar orbital planes at comparable altitudes. You can view all Geo Protected Plus satellites on Orbital Radar’s live tracker.