SpaceX

NROL-172

Success

Falcon 9 Block 5

T-minus to liftoff

HOURS

MINUTES

SECONDS

May 12, 02:13:50 UTC

StatusSuccess

VehicleFalcon 9 Block 5

OrbitUnknown

PadSpace Launch Complex 4E

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Mission

Thirteenth batch of satellites for a reconnaissance satellite constellation built by SpaceX and Northrop Grumman for the National Reconnaissance Office to provide imaging and other reconnaissance capabilities.

Launch Timeline

Countdown

T-00:38:00

GO for Prop Load

T-00:35:00

Prop Load

T-00:35:00

Stage 1 LOX Load

T-00:16:00

Stage 2 LOX Load

T-00:07:00

Engine Chill

T-00:01:00

Startup

T-00:01:00

Tank Press

T-00:00:45

GO for Launch

T-00:00:03

Ignition

In-flight

T+00:00:00

Liftoff

T+00:01:06

Max-Q

T+00:02:25

MECO

T+00:02:29

Stage 2 Separation

T+00:02:36

SES-1

T+00:02:53

Fairing Separation

T+00:06:15

Entry Burn Startup

T+00:06:38

Entry Burn Shutdown

T+00:08:06

Stage 1 Landing Burn

T+00:08:30

Stage 1 Landing

Quick facts

VehicleFalcon 9 Block 5

OrbitUnknown

PadSpace Launch Complex 4E

SiteVandenberg SFB, CA, USA

WindowMay 11, 22:28:00 UTC→May 12, 02:28:00 UTC

Vehicle

FamilyFalcon

Height70 m

Diameter3.65 m

Stages2

ReusableYes

LEO capacity22,800 kg

Track record606/607 successful

Landings593/598

NROL-172

Mission

Launch Timeline

Quick facts

Vehicle

NROL-172

Orbital elements (TLE)

Mission

Q's read

Launch Timeline

Quick facts

Vehicle

Orbital elements (TLE)

Q's read