SpaceX

TRACERS

Success

Falcon 9 Block 5

T-minus to liftoff

HOURS

MINUTES

SECONDS

Jul 23, 18:13:00 UTC

StatusSuccess

VehicleFalcon 9 Block 5

OrbitSun-Synchronous Orbit

PadSpace Launch Complex 4E

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Mission

NASA's Tandem Reconnection and Cusp Electrodynamics Reconnaissance Satellites (TRACERS) mission, consisting of two identical satellites that will orbit Earth in tandem (one following the other), will help understand magnetic re-connection and its effects in Earth’s atmosphere. Magnetic re-connection occurs when activity from the Sun interacts with Earth’s magnetic field. By understanding this process, scientists will be able to better understand and prepare for impacts of solar activity on Earth. Hitchhiking small satellites: * Athena EPIC (Economical Payload Integration Cost) * Polylingual Experimental Terminal (PExT) * Relativistic Electron Atmospheric Loss (REAL)

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+00:01:12

Max-Q

T+00:02:13

MECO

T+00:02:17

Stage 2 Separation

T+00:02:21

Stage 1 Flip

T+00:02:24

SES-1

T+00:02:30

Booster Boostback Burn Startup

T+00:02:56

Fairing Separation

T+00:03:26

Booster Boostback Burn Shutdown

T+00:06:04

Entry Burn Startup

T+00:06:21

Entry Burn Shutdown

T+00:07:12

Stage 1 Landing Burn

T+00:07:46

Stage 1 Landing

T+00:08:02

SECO-1

T+00:50:44

SES-2

T+00:50:47

SECO-2

T+00:54:30

Payload Separation

T+00:54:50

Payload Separation

T+01:05:40

SES-3

T+01:05:41

SECO-3

T+01:30:07

SES-4

T+01:30:08

SECO-4

T+01:34:26

Payload Separation

T+01:40:41

Payload Separation

T+01:44:46

Payload Separation

T+01:45:06

Payload Separation

T+01:45:26

Payload Separation

Quick facts

VehicleFalcon 9 Block 5

OrbitSun-Synchronous Orbit

PadSpace Launch Complex 4E

SiteVandenberg SFB, CA, USA

WindowJul 23, 18:13:00 UTC→Jul 23, 19:10:00 UTC

Vehicle

FamilyFalcon

Height70 m

Diameter3.65 m

Stages2

ReusableYes

LEO capacity22,800 kg

Track record606/607 successful

Landings593/598

TRACERS

Mission

Launch Timeline

Quick facts

Vehicle

TRACERS

Mission

Reusable Hardware

Q's read

Launch Timeline

Quick facts

Vehicle

Q's read

Reusable Hardware