Skip to content
Home Library Satellite Directory INMARSAT 2-F2

INMARSAT 2-F2

NORAD 21149 Payload GEO 1991-018A ● Active
CONNECTING… GEO · NORAD 21149
NOW PASSING OVER
Calculating position…
Altitude (km)
Speed (km/s)
Latitude
Longitude
Real-time tracking powered by Orbital Radar
ORBITAL RADAR · LIVE GROUND TRACK
🌍 Track on 3D Globe
🛰️ Orbital Parameters
Perigee
36213 km
Apogee
36238 km
Inclination
12.8°
Period
1458.6 min
Mean Motion
0.98725719 rev/day
TLE Epoch
2026-06-19 18:00:00 UTC
📐 Computed Orbital Characteristics
Avg. Altitude36,226 km
Orbital Velocity11,012 km/h
Velocity3.06 km/s
Orbital Period24.3 hours
Orbits / Day0.99
Eccentricity0.0003
Semi-Major Axis42,597 km
Est. Orbital LifetimePermanent — geostationary orbit, no atmospheric drag
🚀 Launch & Identity
Country / Operator
IM
Launch Date
1991-03-08
Launch Site
Cape Canaveral, Florida
Int'l Designator
1991-018A
Object Type
Payload
RCS Size
Large (>1 m²)
📖 About This Object
INMARSAT 2-F2 is an active satellite operated by IM, launched on 1991-03-08 from Cape Canaveral, Florida. With over 35 years in orbit, it has far exceeded many satellites’ design lifetimes. It orbits in Geostationary Orbit (GEO) at altitudes between 36,213 km and 36,238 km with an inclination of 12.8°. It travels at approximately 11,012 km/h (3.06 km/s), completing one full orbit every 24.3 hours — that’s roughly 0.99 orbits per day. At geostationary altitude, there is no meaningful atmospheric drag — this object will remain in orbit indefinitely unless actively deorbited. Orbital Radar tracks INMARSAT 2-F2 in real time using the latest two-line element set (TLE) data, providing live position, altitude, speed and orbital path updated continuously.
🌍 Orbit Context
INMARSAT 2-F2 occupies geostationary orbit at approximately 35,786 km above the equator, where its orbital period matches the Earth’s 24-hour rotation. From the ground, it appears to hover over a fixed point — ideal for broadcast television, weather monitoring and wideband communications. With an inclination of 12.8°, it traces a small figure-of-eight pattern relative to the equator rather than remaining perfectly stationary, which can indicate aging stationkeeping fuel or a deliberate inclined-orbit strategy. Within ±50 km of INMARSAT 2-F2’s average altitude, there are currently 72 active payloads and 17 tracked debris or rocket body fragments. IM operates approximately 20 active satellites in total, of which 2 share a similar altitude band with INMARSAT 2-F2.
❓ Frequently Asked Questions
INMARSAT 2-F2 orbits at approximately 36,226 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 11,012 km/h — it just keeps pace with the ground below. With an inclination of 12.8°, it actually traces a small figure-of-eight pattern rather than remaining perfectly fixed. Learn more about geostationary orbits.
INMARSAT 2-F2 is operated by IM. It is catalogued by the U.S. Space Surveillance Network under NORAD ID 21149. You can track INMARSAT 2-F2 in real time on Orbital Radar’s live tracker or browse all operators in the operator directory.
INMARSAT 2-F2 was launched on 1991-03-08 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. View the full satellite launch log.
Yes — Orbital Radar tracks INMARSAT 2-F2 (NORAD ID 21149) 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. You can also browse the satellite directory to find other tracked objects.
INMARSAT 2-F2 travels at approximately 11,012 km/h (6,843 mph) — roughly 3.06 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.