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United Launch AllianceAtlas V 551Space Launch Complex 41, Cape Canaveral SFS, FL, USA
MUOS-4
Launched
September 2, 2015
Summary
MUOS-4 launched on an United Launch Alliance Atlas V 551 from Space Launch Complex 41, Cape Canaveral SFS, FL, USA on September 2, 2015. It was United Launch Alliance's 100th launch, 8th this year and humanity's 5,489th orbital launch attempt. It was the 6th Atlas V 551 flight and the 2nd this year. The payload was bound for Geostationary Transfer Orbit (GTO). MUOS 4, one of 3 catalogued objects, reached a 3,846 × 35,773 km orbit inclined 19.1°. 3 objects from this launch are catalogued, one of them a payload.
- Watch
- Atlas V MUOS-4 Launch HighlightsUnited Launch Alliance
- Vehicle
- Atlas V 551 · United Launch Alliance
- Booster
- No booster details on record.
- Mission
- Government/Top Secret · Geostationary Transfer Orbit (GTO)
- Milestone
- 6th Atlas V 551 flight · 2nd this yearUnited Launch Alliance's 100th launch8th this yearhumanity's 5,489th orbital launch attempt47th orbital launch attempt this year
Flight preview
Orbit: as tracked
MUOS 4 · NORAD 40887 · 2015-044 · Space-Track · tracking 1 of 3 objects
Show the numbers for orbit elements
- Object
- MUOS 4
- Object ID
- 2015-044A
- Epoch
- 2015-09-02 17:06:38 UTC
- Mean motion
- 2.04943545 rev/day
- Eccentricity
- 0.609734
- Inclination
- 19.1217°
- Ascending node
- 327.8679°
- Arg. of perigee
- 179.0522°
- Mean anomaly
- 202.6517°
- Element set
- 999
- Rev at epoch
- 0
- B*
- 0
Perigee, apogee and period are Kepler figures from the catalogued mean elements, not a propagated state. Published orbit: GTO. Ascent drawn from padside's representative profile.
Catalogued objects
3 catalogued: 1 payload, 1 rocket stage, 1 component; 3 still in orbit
- MUOS 4 · NORAD 40887 · in orbit
Centaur AV-056 · in orbit
Data from J. McDowell, planet4589.org
About this launch
MUOS-4 is the fourth in a Lockheed Martin-built, five-ship fleet for a next-generation, narrowband tactical military satellite communications system.
Pad
Space Launch Complex 41, Cape Canaveral SFS, FL, USA
73rd launch from Space Launch Complex 41, 5th this year · 732nd from Cape Canaveral SFS, FL, USA
125 launches from this pad · 1,131 from Cape Canaveral SFS, FL, USA
48 days after the previous launch from this pad
Questions
When did MUOS-4 launch?
MUOS-4 launched on September 2, 2015. The time is known to the hour, not the minute.
Where can I watch MUOS-4?
Coverage: Atlas V MUOS-4 Launch Highlights. Watch the replay
What rocket launched MUOS-4?
Atlas V 551, flown by United Launch Alliance. Atlas V 551 spec sheet
Where did MUOS-4 launch from?
Space Launch Complex 41, Cape Canaveral SFS, FL, USA.
What orbit did MUOS-4 reach?
MUOS 4, one of 3 catalogued objects, reached a 3,846 × 35,773 km orbit inclined 19.1°.
How many satellites did MUOS-4 launch?
1 payload from this launch is catalogued, still in orbit (Data from J. McDowell, planet4589.org).