GLOBALSTAR M051
NORAD 25853
Payload
LEO
1999-037C
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LEO · NORAD 25853
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Altitude (km)
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Speed (km/s)
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Latitude
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Longitude
🛰️ Orbital Parameters
Perigee
1950 km
Apogee
1951 km
Inclination
52.0°
Period
126.1 min
Mean Motion
11.42205969 rev/day
TLE Epoch
2026-06-19 04:00:00 UTC
📐 Computed Orbital Characteristics
Avg. Altitude1,951 km
Orbital Velocity24,916 km/h
Velocity6.92 km/s
Orbital Period2 hours 6 minutes
Orbits / Day11.42
Eccentricity0.0001
Semi-Major Axis8,322 km
Est. Orbital LifetimeThousands of years
🚀 Launch & Identity
Country / Operator
Globalstar (Globalstar)
Launch Date
1999-07-10
Launch Site
Cape Canaveral, Florida
Int'l Designator
1999-037C
Object Type
Payload
RCS Size
Large (>1 m²)
📖 About This Object
GLOBALSTAR M051 is an active satellite operated by Globalstar (Globalstar), launched on 1999-07-10 from Cape Canaveral, Florida. With over 27 years in orbit, it has far exceeded many satellites’ design lifetimes. It orbits in Low Earth Orbit (LEO) at altitudes between 1,950 km and 1,951 km with an inclination of 52.0°. It travels at approximately 24,916 km/h (6.92 km/s), completing one full orbit every 2 hours 6 minutes — that’s roughly 11.42 orbits per day. Its near-circular orbit (eccentricity close to zero) means it maintains a very consistent altitude throughout each revolution. At its current altitude, the estimated orbital lifetime before atmospheric re-entry is thousands of years. Orbital Radar tracks GLOBALSTAR M051 in real time using the latest two-line element set (TLE) data, providing live position, altitude, speed and orbital path updated continuously.
🌍 Orbit Context
GLOBALSTAR M051 orbits at an average altitude of 1,951 km in the uppermost reaches of Low Earth Orbit. At this altitude, orbital decay is effectively zero without active deorbiting, and coverage footprints are significantly larger than lower LEO, though at the cost of higher latency. Within ±50 km of GLOBALSTAR M051’s average altitude, there are currently 6 active payloads and 17 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 52.0°, GLOBALSTAR M051 passes over latitudes between 52.0°N and 52.0°S, covering most populated land masses in both hemispheres. This mid-inclination band balances global coverage with efficient launch energy requirements. Globalstar operates approximately 84 active satellites in total, of which 5 share a similar altitude band with GLOBALSTAR M051.
🔗 Globalstar Constellation
This satellite is part of the Globalstar constellation, a LEO mobile satellite communications system providing voice, data and IoT services. The second-generation constellation operates 24 satellites at approximately 1,414 km altitude with a 52° inclination. Globalstar also provides the backbone for Apple's Emergency SOS via satellite feature on iPhones.
❓ Frequently Asked Questions
GLOBALSTAR M051 orbits in Low Earth Orbit (LEO) at altitudes between 1,950 km (perigee) and 1,951 km (apogee), with an average altitude of approximately 1,951 km. It completes one orbit every 2 hours 6 minutes, travelling at approximately 24,916 km/h (15,482 mph).
GLOBALSTAR M051 is operated by Globalstar (Globalstar). It is catalogued by the U.S. Space Surveillance Network under NORAD ID 25853. You can track GLOBALSTAR M051 in real time on Orbital Radar’s live tracker or browse all operators in the operator directory.
GLOBALSTAR M051 was launched on 1999-07-10 from Cape Canaveral, Florida, one of the busiest launch facilities in the world, operated by NASA and the U.S. Space Force on Florida’s Atlantic coast. At its current altitude, the estimated remaining orbital lifetime is: thousands of years. View the full satellite launch log.
Yes — Orbital Radar tracks GLOBALSTAR M051 (NORAD ID 25853) 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.
GLOBALSTAR M051 travels at approximately 24,916 km/h (15,482 mph) — roughly 6.92 km/s. It completes 11.42 orbits per day, meaning the crew or instruments aboard (if any) would experience approximately 23 sunrises and sunsets every 24 hours.