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ITALSAT 1

NORAD 21055 Payload GEO 1991-003A ● Active
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Altitude (km)
Speed (km/s)
Latitude
Longitude
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🛰️ Orbital Parameters
Perigee
35835 km
Apogee
35912 km
Inclination
14.5°
Period
1440.5 min
Mean Motion
0.99963731 rev/day
TLE Epoch
2026-09-18 13:00:00 UTC
📐 Computed Orbital Characteristics
Avg. Altitude35,874 km
Orbital Velocity11,058 km/h
Velocity3.07 km/s
Orbital Period~24 hours (geosynchronous)
Orbits / Day1.00
Eccentricity0.0009
Semi-Major Axis42,245 km
Est. Orbital LifetimePermanent — geostationary orbit, no atmospheric drag
🚀 Launch & Identity
Country / Operator
🇮🇹 ASI (Italy)
Launch Date
1991-01-15
Launch Site
Guiana Space Centre, French Guiana
Int'l Designator
1991-003A
Object Type
Payload
RCS Size
Large (>1 m²)
📖 About This Object
ITALSAT 1 is an active satellite operated by ASI (Italy), launched on 1991-01-15 from Guiana Space Centre, French Guiana on the Italsat 1 launch. With over 35 years in orbit, it has far exceeded many satellites’ design lifetimes. It orbits in Geostationary Orbit (GEO) at altitudes between 35,835 km and 35,912 km with an inclination of 14.5°. It travels at approximately 11,058 km/h (3.07 km/s), completing one full orbit every ~24 hours (geosynchronous) — that’s roughly 1.00 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 ITALSAT 1 in real time using the latest two-line element set (TLE) data, providing live position, altitude, speed and orbital path updated continuously.
🌍 Orbit Context
ITALSAT 1 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 14.5°, 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 ITALSAT 1’s average altitude, there are currently 71 active payloads and 32 tracked debris or rocket body fragments. Italy operates approximately 87 active satellites in total.
❓ Frequently Asked Questions
ITALSAT 1 orbits at approximately 35,874 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 11,058 km/h — it just keeps pace with the ground below. With an inclination of 14.5°, it actually traces a small figure-of-eight pattern rather than remaining perfectly fixed. Learn more about geostationary orbits.
ITALSAT 1 is operated by ASI (Italy). It is catalogued by the U.S. Space Surveillance Network under NORAD ID 21055. You can track ITALSAT 1 in real time on Orbital Radar’s live tracker or browse all operators in the operator directory.
ITALSAT 1 was launched on 1991-01-15 from Guiana Space Centre, French Guiana. View the full satellite launch log.
Yes — Orbital Radar tracks ITALSAT 1 (NORAD ID 21055) 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.
ITALSAT 1 travels at approximately 11,058 km/h (6,871 mph) — roughly 3.07 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.