United Launch AllianceAtlas V 421Space Launch Complex 41, Cape Canaveral SFS, FL, USA
MMS
Launched
March 13, 2015
Summary
MMS launched on an United Launch Alliance Atlas V 421 from Space Launch Complex 41, Cape Canaveral SFS, FL, USA on March 13, 2015. It was United Launch Alliance's 95th launch, 3rd this year and humanity's 5,454th orbital launch attempt. It was the 4th Atlas V 421 flight and the 1st this year. The payload was bound for Elliptical Orbit (Elliptical). MMS 1, one of 5 catalogued objects, reached a 552 × 69,983 km orbit inclined 28.8°. 5 objects from this launch are catalogued, 4 of them payloads.
- Watch
- Liftoff of MMSNASA's Kennedy Space Center
- Vehicle
- Atlas V 421 · United Launch Alliance
- Booster
- No booster details on record.
- Mission
- Heliophysics · Elliptical Orbit (Elliptical)
- Milestone
- 4th Atlas V 421 flight · 1st this yearUnited Launch Alliance's 95th launch3rd this yearhumanity's 5,454th orbital launch attempt12th orbital launch attempt this year
Flight preview
Orbit: as tracked
MMS 1 · NORAD 40482 · 2015-011 · Space-Track · tracking 1 of 5 objects
Show the numbers for orbit elements
- Object
- TBA - TO BE ASSIGNED
- Object ID
- 2015-011A
- Epoch
- 2015-03-13 03:54:41 UTC
- Mean motion
- 1.02177957 rev/day
- Eccentricity
- 0.8337252
- Inclination
- 28.8253°
- Ascending node
- 32.1533°
- Arg. of perigee
- 19.0779°
- Mean anomaly
- 358.2761°
- 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: Elliptical. Ascent drawn from padside's representative profile.
Catalogued objects
5 catalogued: 4 payloads, 1 rocket stage
- MMS 1 · NORAD 40482 · left Earth orbit March 30, 2017
- MMS 2 · NORAD 40483 · left Earth orbit April 10, 2017
- MMS 3 · NORAD 40484 · left Earth orbit April 7, 2017
- MMS 4 · NORAD 40485 · left Earth orbit April 5, 2017
Centaur AV-053 · re-entered August 26, 2017
Data from J. McDowell, planet4589.org
About this launch
NASA's Magnetospheric Multiscale mission is a set of four identical spacecraft flying in a tetrahedral formation through Earth's magnetosphere to study magnetic reconnection, launched together into a highly elliptical orbit.
Pad

Space Launch Complex 41, Cape Canaveral SFS, FL, USA
70th launch from Space Launch Complex 41, 2nd this year · 724th from Cape Canaveral SFS, FL, USA
125 launches from this pad · 1,131 from Cape Canaveral SFS, FL, USA
51 days after the previous launch from this pad
Questions
When did MMS launch?
MMS launched on March 13, 2015. The time is known to the hour, not the minute.
Where can I watch MMS?
Coverage: Liftoff of MMS. Watch the replay
What rocket launched MMS?
Atlas V 421, flown by United Launch Alliance. Atlas V 421 spec sheet
Where did MMS launch from?
Space Launch Complex 41, Cape Canaveral SFS, FL, USA.
What orbit did MMS reach?
MMS 1, one of 5 catalogued objects, reached a 552 × 69,983 km orbit inclined 28.8°.
How many satellites did MMS launch?
4 payloads from this launch are catalogued (Data from J. McDowell, planet4589.org).
![[AUTO] Atlas V 421 - image](/media?u=https%3A%2F%2Fthespacedevs-prod.nyc3.digitaloceanspaces.com%2Fmedia%2Fimages%2Fatlas_v_421_image_20210519053741.jpeg&w=1600)