Communications
GLOBALSTAR M077
Mobile Satellite Communications · Globalstar
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One of Globalstar's second-generation satellites, part of a 24-satellite constellation that transmits over 1.8 billion low-bandwidth messages annually. Its coverage notably weakens near the poles and high Arctic — a gap that matters little for its core Apple Emergency SOS customer base, since iPhone users triggering emergency satellite texts are rarely doing so from Greenland's ice sheet.
Its orbit
- Orbit
- Low Earth Orbitcan appear as a fast-moving star at dawn or dusk
- Altitude
- 1,140–1,143 mi (1,835–1,839 km)
- Inclination
- 52.0°
- One orbit
- 123.3 minutes11.7 orbits a day
- NORAD ID
- 37191
- Int’l designator
- 2010-054D
- Launched
- 2010
Orbital elements from CelesTrak, as of 21 Sep 2026.
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