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GSTAR 1

NORAD 15677 Payload GEO 1985-035A ● Active
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Altitude (km)
Speed (km/s)
Latitude
Longitude
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🛰️ Orbital Parameters
Perigee
35775 km
Apogee
35798 km
Inclination
14.4°
Period
1436.1 min
Mean Motion
1.00272614 rev/day
TLE Epoch
2026-03-17 08:00:00 UTC
📐 Computed Orbital Characteristics
Avg. Altitude35,787 km
Orbital Velocity11,070 km/h
Velocity3.07 km/s
Orbital Period~24 hours (geosynchronous)
Orbits / Day1.00
Eccentricity0.0003
Semi-Major Axis42,158 km
Est. Orbital LifetimePermanent — geostationary orbit, no atmospheric drag
🚀 Launch & Identity
Country / Operator
🇺🇸 United States
Launch Date
1985-05-08
Launch Site
Guiana Space Centre, Kourou
Int'l Designator
1985-035A
Object Type
Payload
RCS Size
Large (>1 m²)
🔗 Constellation / Groups
geo protectedgeo protected plus
📖 About This Object
GSTAR 1 is an active satellite operated by United States, launched on 1985-05-08 from Guiana Space Centre, Kourou. With over 41 years in orbit, it has far exceeded many satellites’ design lifetimes. It orbits in Geostationary Orbit (GEO) at altitudes between 35,775 km and 35,798 km with an inclination of 14.4°. It travels at approximately 11,070 km/h (3.07 km/s), completing one full orbit every ~24 hours (geosynchronous) — that’s roughly 1.00 orbits per day. It is part of the Geo Protected constellation group. At geostationary altitude, there is no meaningful atmospheric drag — this object will remain in orbit indefinitely unless actively deorbited. Orbital Radar tracks GSTAR 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
GSTAR 1 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 14.4°, 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
GSTAR 1 orbits at approximately 35,787 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 11,070 km/h — it just keeps pace with the ground below. With an inclination of 14.4°, it actually traces a small figure-of-eight pattern rather than remaining perfectly fixed.
GSTAR 1 is operated by United States. It is catalogued by the U.S. Space Surveillance Network under NORAD ID 15677. You can track GSTAR 1 in real time on Orbital Radar’s live tracker.
GSTAR 1 was launched on 1985-05-08 from Guiana Space Centre, Kourou, the European spaceport in French Guiana, chosen for its equatorial location which provides an energy-efficient boost for orbital insertions.
Yes — Orbital Radar tracks GSTAR 1 (NORAD ID 15677) 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.
GSTAR 1 travels at approximately 11,070 km/h (6,878 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.
GSTAR 1 is a member of the Geo Protected 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 satellites on Orbital Radar’s live tracker.