ESA/GOES
NORAD 9931
Payload
MEO
1977-029A
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MEO · NORAD 9931
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Altitude (km)
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Longitude
🛰️ Orbital Parameters
Perigee
2775 km
Apogee
38379 km
Inclination
27.7°
Period
734.0 min
Mean Motion
1.96172445 rev/day
TLE Epoch
2026-10-17 09:00:00 UTC
📐 Computed Orbital Characteristics
Avg. Altitude20,577 km
Orbital Velocity13,845 km/h
Velocity3.85 km/s
Orbital Period12 hours 14 minutes
Orbits / Day1.96
Eccentricity0.6606
Semi-Major Axis26,948 km
Est. Orbital LifetimeEffectively permanent — above atmospheric drag
🚀 Launch & Identity
Country / Operator
ESA (European Space Agency)
Launch Date
1977-04-20
Launch Site
Cape Canaveral Space Force Station, United States
Int'l Designator
1977-029A
Object Type
Payload
RCS Size
Large (>1 m²)
📖 About This Object
ESA/GOES is an active satellite operated by ESA (European Space Agency), launched on 1977-04-20 from Cape Canaveral Space Force Station, United States on the Geos 1 launch. With over 49 years in orbit, it has far exceeded many satellites’ design lifetimes. It orbits in Medium Earth Orbit (MEO) at altitudes between 2,775 km and 38,379 km with an inclination of 27.7°. It travels at approximately 13,845 km/h (3.85 km/s), completing one full orbit every 12 hours 14 minutes — that’s roughly 1.96 orbits per day. Its orbital eccentricity of 0.6606 gives it a noticeably elliptical path, with significant altitude variation between perigee and apogee. Orbital Radar tracks ESA/GOES in real time using the latest two-line element set (TLE) data, providing live position, altitude, speed and orbital path updated continuously.
🌍 Orbit Context
ESA/GOES orbits at an average altitude of 20,577 km in Medium Earth Orbit, the region between LEO and GEO (2,000–35,786 km). MEO’s higher altitude gives each satellite a much larger ground footprint than LEO, meaning fewer spacecraft are needed for global coverage — but signal latency is higher and radiation from the Van Allen belts is a significant design constraint. Within ±50 km of ESA/GOES’s average altitude, there are currently 1 active payload and 9 tracked debris or rocket body fragments. This is a relatively sparse altitude band, containing less than 1% of all active satellites. With an inclination of 27.7°, ESA/GOES passes over latitudes between 27.7°N and 27.7°S, covering the tropical and temperate zones where most of the world’s population resides. Low-to-mid inclination orbits are efficient to reach from equatorial and mid-latitude launch sites. ESA (European Space Agency) operates approximately 95 active satellites in total.
❓ Frequently Asked Questions
ESA/GOES orbits in Medium Earth Orbit (MEO) at altitudes between 2,775 km (perigee) and 38,379 km (apogee), with an average altitude of approximately 20,577 km. It completes one orbit every 12 hours 14 minutes, travelling at approximately 13,845 km/h (8,603 mph).
ESA/GOES is operated by ESA (European Space Agency). It is catalogued by the U.S. Space Surveillance Network under NORAD ID 9931. You can track ESA/GOES in real time on Orbital Radar’s live tracker or browse all operators in the operator directory.
ESA/GOES was launched on 1977-04-20 from Cape Canaveral Space Force Station, United States, 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 ESA/GOES (NORAD ID 9931) using the latest TLE (two-line element set) orbital data in its live tracking catalogue (see our data sources). 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.
ESA/GOES travels at approximately 13,845 km/h (8,603 mph) — roughly 3.85 km/s. It completes 1.96 orbits per day, meaning the crew or instruments aboard (if any) would experience approximately 4 sunrises and sunsets every 24 hours.