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COSMOS 1629

NORAD 15574 Payload GEO 1985-016A ● Active
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Altitude (km)
Speed (km/s)
Latitude
Longitude
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🛰️ Orbital Parameters
Perigee
35758 km
Apogee
35813 km
Inclination
9.3°
Period
1436.0 min
Mean Motion
1.00276654 rev/day
TLE Epoch
2026-03-17 13:00:00 UTC
📐 Computed Orbital Characteristics
Avg. Altitude35,786 km
Orbital Velocity11,070 km/h
Velocity3.07 km/s
Orbital Period~24 hours (geosynchronous)
Orbits / Day1.00
Eccentricity0.0007
Semi-Major Axis42,157 km
Est. Orbital LifetimePermanent — geostationary orbit, no atmospheric drag
🚀 Launch & Identity
Country / Operator
🇷🇺 Russia (CIS)
Launch Date
1985-02-21
Launch Site
Baikonur, Kazakhstan
Int'l Designator
1985-016A
Object Type
Payload
RCS Size
Large (>1 m²)
🔗 Constellation / Groups
geo protectedgeo protected plus
📖 About This Object
COSMOS 1629 is an active satellite operated by Russia (CIS), launched on 1985-02-21 from Baikonur, Kazakhstan. With over 41 years in orbit, it has far exceeded many satellites’ design lifetimes. It orbits in Geostationary Orbit (GEO) at altitudes between 35,758 km and 35,813 km with an inclination of 9.3°. 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 COSMOS 1629 in real time using the latest two-line element set (TLE) data, providing live position, altitude, speed and orbital path updated continuously.
🌍 Orbit Context
COSMOS 1629 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 9.3°, 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.
🔗 Cosmos (Military/Government) Series

This satellite carries the Cosmos designation, used by Russia (and formerly the Soviet Union) as a generic identifier for military and government spacecraft. The Cosmos series encompasses reconnaissance, signals intelligence (SIGINT), early warning, navigation, communications and scientific payloads. Many Cosmos satellites have classified missions with limited publicly available information.

❓ Frequently Asked Questions
COSMOS 1629 orbits at approximately 35,786 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 9.3°, it actually traces a small figure-of-eight pattern rather than remaining perfectly fixed.
COSMOS 1629 is operated by Russia (CIS). It is catalogued by the U.S. Space Surveillance Network under NORAD ID 15574. You can track COSMOS 1629 in real time on Orbital Radar’s live tracker.
COSMOS 1629 was launched on 1985-02-21 from Baikonur, Kazakhstan, the world’s first and largest operational space launch facility, located in Kazakhstan.
Yes — Orbital Radar tracks COSMOS 1629 (NORAD ID 15574) 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.
COSMOS 1629 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.
COSMOS 1629 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.