GOES 1 (SMS-C)
NORAD 8366
Payload
GEO
1975-100A
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GEO · NORAD 8366
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Altitude (km)
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Latitude
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Longitude
🛰️ Orbital Parameters
Perigee
35753 km
Apogee
35804 km
Inclination
4.3°
Period
1435.7 min
Mean Motion
1.00300911 rev/day
TLE Epoch
2026-10-21 07:00:00 UTC
📐 Computed Orbital Characteristics
Avg. Altitude35,779 km
Orbital Velocity11,071 km/h
Velocity3.08 km/s
Orbital Period~24 hours (geosynchronous)
Orbits / Day1.00
Eccentricity0.0006
Semi-Major Axis42,150 km
Est. Orbital LifetimePermanent — geostationary orbit, no atmospheric drag
🚀 Launch & Identity
Country / Operator
🇺🇸 NOAA (United States)
Launch Date
1975-10-16
Launch Site
Cape Canaveral Space Force Station, United States
Int'l Designator
1975-100A
Object Type
Payload
RCS Size
Large (>1 m²)
🔗 Constellation / Groups
goes
📖 About This Object
GOES 1 (SMS-C) is an active satellite operated by NOAA (United States), launched on 1975-10-16 from Cape Canaveral Space Force Station, United States on the GOES A launch. After more than 51 years in orbit, it is one of the longest-surviving objects in the space catalogue. It orbits in Geostationary Orbit (GEO) at altitudes between 35,753 km and 35,804 km with an inclination of 4.3°. It travels at approximately 11,071 km/h (3.08 km/s), completing one full orbit every ~24 hours (geosynchronous) — that’s roughly 1.00 orbits per day. It is part of the Goes constellation group. At geostationary altitude, there is no meaningful atmospheric drag — this object will remain in orbit indefinitely unless actively deorbited. Orbital Radar tracks GOES 1 (SMS-C) in real time using the latest two-line element set (TLE) data, providing live position, altitude, speed and orbital path updated continuously.
🌍 Orbit Context
GOES 1 (SMS-C) 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 4.3°, 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 GOES 1 (SMS-C)’s average altitude, there are currently 737 active payloads and 57 tracked debris or rocket body fragments — notable neighbours include ASTRA 1N, GOES 16, TDRS 13. United States operates approximately 13,279 active satellites in total, of which 157 share a similar altitude band with GOES 1 (SMS-C).
🔗 GOES Weather Satellite Programme
This satellite is part of the Geostationary Operational Environmental Satellite (GOES) system, operated by NOAA and built by NASA. GOES satellites provide continuous weather monitoring over the Western Hemisphere from geostationary orbit at approximately 35,786 km altitude. Current operational satellites (GOES-16 East and GOES-18 West) carry the Advanced Baseline Imager (ABI) and Geostationary Lightning Mapper (GLM), providing imagery every 30 seconds for severe weather tracking.
❓ Frequently Asked Questions
GOES 1 (SMS-C) orbits at approximately 35,779 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 11,071 km/h — it just keeps pace with the ground below. With an inclination of 4.3°, it actually traces a small figure-of-eight pattern rather than remaining perfectly fixed. Learn more about geostationary orbits.
GOES 1 (SMS-C) is operated by NOAA (United States). It is catalogued by the U.S. Space Surveillance Network under NORAD ID 8366. You can track GOES 1 (SMS-C) in real time on Orbital Radar’s live tracker or browse all operators in the operator directory.
GOES 1 (SMS-C) was launched on 1975-10-16 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 GOES 1 (SMS-C) (NORAD ID 8366) 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.
GOES 1 (SMS-C) travels at approximately 11,071 km/h (6,879 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.
GOES 1 (SMS-C) is a member of the Goes constellation. Satellites in this group work together to provide coordinated coverage, typically in similar orbital planes at comparable altitudes. You can view all Goes satellites on Orbital Radar’s live tracker.