UNITED LAUNCH ALLIANCE
Atlas V 401 | NROL-55 (Multipayload mission)
—
—
Oct 8, 2015 at 12:49 UTC
▸ Flight profile›
Initializing Launch Globe…
Source
PADSpace Launch Complex 3E
SITEVandenberg SFB, CA, USA →ORBITLow Earth Orbit
TYPEGovernment/Top Secret
MISSION OVERVIEW
Classified payload for the U.S. National Reconnaissance Office.
LAUNCH DETAILS
VEHICLE
Atlas V 401AGENCY
United Launch AllianceMISSION
NROL-55 (Multipayload mission)
MISSION TYPE
Government/Top Secret
TARGET ORBIT
Low Earth Orbit
LAUNCH PAD
Space Launch Complex 3ELAUNCH SITE
Vandenberg SFB, CA, USACOUNTRY
USA
LAUNCH TIME VERIFICATION
CONFIRMEDPrecision: Minute
LAUNCH LIBRARY 2 PRIMARY
API ID: fca735fb-ef45-472f-94c5-7afe12b066e4
Reported date: Oct 8, 2015 at 12:49 UTC
Last synced: 24 seconds ago
This launch date and time are confirmed by the launch provider. Countdown is active.
LAUNCH MAP
PAD WEATHER
Loading weather…
CAN YOU SEE THIS LAUNCH?
Select a location to check if this launch is visible from where you are
VEHICLE — Atlas V 401 →
MANUFACTURER
United Launch Alliance
VARIANT
401
FLIGHTS
41
SUCCESSES
41
SUCCESS RATE
100%
An Atlas V with a 4 meter diameter fairing, no boosters and a single centaur upper stage engine.
FREQUENTLY ASKED QUESTIONS
When is the Atlas V 401 | NROL-55 (Multipayload mission) launch?
The Atlas V 401 | NROL-55 (Multipayload mission) is scheduled for Thursday, October 8, 2015 at 12:49 PM UTC. This is the NET (No Earlier Than) time and may be subject to change. Current status: SUCCESS.
What rocket is being used for NROL-55 (Multipayload mission)?
The Atlas V 401 | NROL-55 (Multipayload mission) mission uses the Atlas V 401 rocket, manufactured by United Launch Alliance. The Atlas V 401 has flown 41 times with a 100% success rate.
Where is the Atlas V 401 | NROL-55 (Multipayload mission) launching from?
The launch takes place from Space Launch Complex 3E at Vandenberg SFB, CA, USA.
What orbit is NROL-55 (Multipayload mission) going to?
The NROL-55 (Multipayload mission) mission is targeting Low Earth Orbit.
Who is launching NROL-55 (Multipayload mission)?
The Atlas V 401 | NROL-55 (Multipayload mission) is operated by United Launch Alliance.
Can I watch the Atlas V 401 | NROL-55 (Multipayload mission) launch live?
Yes. Visit the launch detail page on Space Launch Live for embedded YouTube webcasts, replay videos, and links to live coverage from SpaceX, NASA, NASASpaceflight, and other channels.
LAUNCH TIMELINE
Mar 29, 2026 00:03 UTC
Launch added to tracker
Imported from Launch Library 2 API
Mar 29, 2026 00:03 UTC
Launch date set: Oct 8, 2015 at 12:49 UTC
NET (No Earlier Than) confirmed by United Launch Alliance
Mar 29, 2026 00:03 UTC
Launch completed successfully
Updated via Launch Library 2
LIVE DATA SOURCES
Last data sync: 24 seconds ago
●Launch Library 224 seconds ago
Launch ID: fca735fb-ef45-472f-94c5-7afe12b066e4
●Open-Meteo Weather2 weeks ago
Pad weather at 34.64, -120.59
Mission Profile
NROL-55 (Multipayload mission) was a Atlas V 401 mission operated by United Launch Alliance that lifted off from Space Launch Complex 3E, Vandenberg SFB, CA, USA on October 8, 2015. The flight carried its payload on a government/top secret mission to Low Earth Orbit. The launch was a success.