SpaceXLaunch SuccessfulEarth Science

Sentinel‑6B

Name: Falcon 9 Block 5 | Sentinel-6B
Start: 2025-11-17T05:21:42Z
Location: Space Launch Complex 4E, Vandenberg SFB, CA, USA

Falcon 9 Block 5

Launched Mon, Nov 17 · 5:21:42 AM UTC2025-11-17 05:21:42 UTCSpace Launch Complex 4E, Vandenberg SFB, CA, USA

Reached orbit
Booster landed

Follow SpaceX in the app Watch the replay

Success

Reached Low Earth Orbit

The second stage shut down at T+8:18 and released the payload at T+57:13.

Landed

B1097 Landed

The first stage landed at Landing Zone 4, on its 3rd flight.

Worldwide

271st

orbital launch attempt in 2025

SpaceX

152nd

launch this year

Space Launch Complex 4E

56th

launch from this pad this year

Pad turnaround

10 d 8 h

since the pad's previous launch

Replay

Replay: Sentinel-6B Launch

The Flight Plan

Planned times, from liftoff at 5:21 AM UTC. The result is at the top of the page.

Countdown9

T−38:004:43 AMLaunch director verifies go for propellant load
T−35:004:46 AMStart of liquid oxygen loading in the first stage
T−35:004:46 AMStart of propelland loading
T−16:005:05 AMStart of liquid oxygen loading in the second stage
T−7:005:14 AMStart of engine chilling
T−1:005:20 AMFuel tanks are pressurized to flight levels
T−1:005:20 AMThe onboard computer takes control over the countdown and runs last checks
T−0:455:20 AMLaunch director verifies go for launch
T−0:035:21 AMStart of the engine ignition sequence

Show the countdown (9 steps)

T−38:004:43 AMLaunch director verifies go for propellant load
T−35:004:46 AMStart of liquid oxygen loading in the first stage
T−35:004:46 AMStart of propelland loading
T−16:005:05 AMStart of liquid oxygen loading in the second stage
T−7:005:14 AMStart of engine chilling
T−1:005:20 AMFuel tanks are pressurized to flight levels
T−1:005:20 AMThe onboard computer takes control over the countdown and runs last checks
T−0:455:20 AMLaunch director verifies go for launch
T−0:035:21 AMStart of the engine ignition sequence

Ascent6

T+0:005:21 AMFirst upwards movement of the rocket
T+1:125:22 AMMaximum dynamic pressure
T+2:135:23 AMCut-off of the main engine
T+2:175:23 AMSeparation of the second stage from the first
T+2:255:24 AMFirst start of the second engine
T+2:485:24 AMSeparation of the payload fairing

Booster Return6

T+2:305:24 AMStart of the booster boostback burn
T+3:185:25 AMEnd of the booster boostback burn
T+7:225:29 AMStart of the atmospheric entry burn
T+7:485:29 AMEnd of the atmospheric entry burn
T+8:425:30 AMStart of the first stage landing burn
T+9:115:30 AMLanding of the first stage

Second Stage and Payload4

T+8:185:30 AMFirst cut-off of the second engine
T+52:026:13 AMSecond start of the second engine
T+52:126:13 AMSecond cut-off of the second engine
T+57:136:18 AMFinal deployment of the payload from the rocket

Mission

The Sentinel-6 Michael Freilich (launched November 2020) and Sentinel-6B make up the Sentinel-6 mission, also known as Jason Continuity of Service (Jason-CS), which is a partnership between NASA, NOAA, ESA, and EUMETSAT. This mission continues the long-term global sea surface height data record begun by first Jason satellites in 1992.

Launch Provider

SpaceX

Commercial · United States of America · Founded 2002 · CEO Elon Musk

Space Exploration Technologies Corp., known as SpaceX, is an American aerospace manufacturer and space transport services company headquartered in Hawthorne, California. It was founded in 2002 by entrepreneur Elon Musk with the goal of reducing space transportation costs and enabling the colonization of Mars. SpaceX operates from many pads, on the East Coast of the US they operate from SLC-40 at Cape Canaveral Space Force Station and historic LC-39A at Kennedy Space Center. They also operate from SLC-4E at Vandenberg Space Force Base, California, usually for polar launches. Another launch site is being developed at Boca Chica, Texas.

Launches

742

Successful

727

98%

Landings

687

of 715

Upcoming

136

scheduled

FliesFalcon Starship Dragon

All SpaceX launches Website Wikipedia

Updates

Nov 17 · 11:26 AM
Launch successful
hitura-nobad
Nov 17 · 6:20 AM
Sentinel-6B deployed
hitura-nobad
Nov 17 · 5:22 AM
Liftoff!
hitura-nobad
Nov 17 · 4:31 AM
Updated launch weather, 90% GO.
Cosmic_Penguin
Nov 17 · 4:28 AM
Official Webcast by NASA has started
Launch Library 2

Show earlier updates

Nov 16 · 11:00 PM
Tweaked T-0.
Cosmic_Penguin
Nov 15 · 9:29 PM
Updated launch weather, 40% GO.
Cosmic_Penguin
Nov 15 · 9:13 PM
Tweaked T-0.
Cosmic_Penguin
Nov 7 · 10:03 PM
GO for launch.
Cosmic_Penguin
Nov 6 · 6:16 PM
Added launch window per marine navigation warnings.
Cosmic_Penguin
Sep 24 · 1:21 PM
Reverted back to November 16.
Cosmic_Penguin
Sep 22 · 1:00 PM
NET November 17.
Cosmic_Penguin
Aug 8 · 3:18 AM
NET November 16.
Cosmic_Penguin
Jun 3 · 11:31 PM
NET November.
Cosmic_Penguin
Dec 18 · 7:12 PM
NET late 2025.
Cosmic_Penguin
Sep 8 · 2:25 AM
NET November 2026.
Cosmic_Penguin
Dec 20 · 10:08 PM
Adding launch
Jay

Falcon 9 Block 5

Vehicle history

Height

70m

Diameter

3.6m

To low Earth orbit

22,800kg

Liftoff thrust

7,607kN

Space Launch Now for iOS and Android

Notifications before every launch you follow, live countdowns on your home screen and watch, and webcasts as they start.

See what's in the app

Scan to open on your phone

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SpaceXLaunch SuccessfulEarth Science

Sentinel‑6B

Falcon 9 Block 5

Launched Mon, Nov 17 · 5:21:42 AM UTC2025-11-17 05:21:42 UTCSpace Launch Complex 4E, Vandenberg SFB, CA, USA

Reached orbit
Booster landed

Follow SpaceX in the app Watch the replay

Success

Reached Low Earth Orbit

The second stage shut down at T+8:18 and released the payload at T+57:13.

Landed

B1097 Landed

The first stage landed at Landing Zone 4, on its 3rd flight.

Worldwide

271st

orbital launch attempt in 2025

SpaceX

152nd

launch this year

Space Launch Complex 4E

56th

launch from this pad this year

Pad turnaround

10 d 8 h

since the pad's previous launch

Replay

Replay: Sentinel-6B Launch

The Flight Plan

Planned times, from liftoff at 5:21 AM UTC. The result is at the top of the page.

Countdown9

T−38:004:43 AMLaunch director verifies go for propellant load
T−35:004:46 AMStart of liquid oxygen loading in the first stage
T−35:004:46 AMStart of propelland loading
T−16:005:05 AMStart of liquid oxygen loading in the second stage
T−7:005:14 AMStart of engine chilling
T−1:005:20 AMFuel tanks are pressurized to flight levels
T−1:005:20 AMThe onboard computer takes control over the countdown and runs last checks
T−0:455:20 AMLaunch director verifies go for launch
T−0:035:21 AMStart of the engine ignition sequence

Show the countdown (9 steps)

T−38:004:43 AMLaunch director verifies go for propellant load
T−35:004:46 AMStart of liquid oxygen loading in the first stage
T−35:004:46 AMStart of propelland loading
T−16:005:05 AMStart of liquid oxygen loading in the second stage
T−7:005:14 AMStart of engine chilling
T−1:005:20 AMFuel tanks are pressurized to flight levels
T−1:005:20 AMThe onboard computer takes control over the countdown and runs last checks
T−0:455:20 AMLaunch director verifies go for launch
T−0:035:21 AMStart of the engine ignition sequence

Ascent6

T+0:005:21 AMFirst upwards movement of the rocket
T+1:125:22 AMMaximum dynamic pressure
T+2:135:23 AMCut-off of the main engine
T+2:175:23 AMSeparation of the second stage from the first
T+2:255:24 AMFirst start of the second engine
T+2:485:24 AMSeparation of the payload fairing

Booster Return6

T+2:305:24 AMStart of the booster boostback burn
T+3:185:25 AMEnd of the booster boostback burn
T+7:225:29 AMStart of the atmospheric entry burn
T+7:485:29 AMEnd of the atmospheric entry burn
T+8:425:30 AMStart of the first stage landing burn
T+9:115:30 AMLanding of the first stage

Second Stage and Payload4

T+8:185:30 AMFirst cut-off of the second engine
T+52:026:13 AMSecond start of the second engine
T+52:126:13 AMSecond cut-off of the second engine
T+57:136:18 AMFinal deployment of the payload from the rocket

Mission

Launch Provider

SpaceX

Commercial · United States of America · Founded 2002 · CEO Elon Musk

Launches

742

Successful

727

98%

Landings

687

of 715

Upcoming

136

scheduled

FliesFalcon Starship Dragon

All SpaceX launches Website Wikipedia

Updates

Nov 17 · 11:26 AM
Launch successful
hitura-nobad
Nov 17 · 6:20 AM
Sentinel-6B deployed
hitura-nobad
Nov 17 · 5:22 AM
Liftoff!
hitura-nobad
Nov 17 · 4:31 AM
Updated launch weather, 90% GO.
Cosmic_Penguin
Nov 17 · 4:28 AM
Official Webcast by NASA has started
Launch Library 2

Show earlier updates

Nov 16 · 11:00 PM
Tweaked T-0.
Cosmic_Penguin
Nov 15 · 9:29 PM
Updated launch weather, 40% GO.
Cosmic_Penguin
Nov 15 · 9:13 PM
Tweaked T-0.
Cosmic_Penguin
Nov 7 · 10:03 PM
GO for launch.
Cosmic_Penguin
Nov 6 · 6:16 PM
Added launch window per marine navigation warnings.
Cosmic_Penguin
Sep 24 · 1:21 PM
Reverted back to November 16.
Cosmic_Penguin
Sep 22 · 1:00 PM
NET November 17.
Cosmic_Penguin
Aug 8 · 3:18 AM
NET November 16.
Cosmic_Penguin
Jun 3 · 11:31 PM
NET November.
Cosmic_Penguin
Dec 18 · 7:12 PM
NET late 2025.
Cosmic_Penguin
Sep 8 · 2:25 AM
NET November 2026.
Cosmic_Penguin
Dec 20 · 10:08 PM
Adding launch
Jay

Falcon 9 Block 5

Vehicle history

Height

70m

Diameter

3.6m

To low Earth orbit

22,800kg

Liftoff thrust

7,607kN

Next From Vandenberg SFB

Vandenberg SFB schedule

Oct30Fri

Starlink Group 15-18SpaceX · Falcon 9 Block 5 · Space Launch Complex 4E, Vandenberg SFB, CA, USALow Earth OrbitGo for launch4:02 AM UTC Nov2Mon

USSF-432SpaceX · Falcon 9 Block 5 · Space Launch Complex 4E, Vandenberg SFB, CA, USALow Earth OrbitGo for launch1:56 AM UTC

Space Launch Now for iOS and Android

Notifications before every launch you follow, live countdowns on your home screen and watch, and webcasts as they start.

See what's in the app

Scan to open on your phone

Sentinel‑6B

Replay

More Videos

The Flight Plan

Countdown9

Ascent6

Booster Return6

Second Stage and Payload4

Mission

SpaceX

Updates

Falcon 9 Block 5

Sentinel‑6B

Replay

More Videos

The Flight Plan

Countdown9

Ascent6

Booster Return6

Second Stage and Payload4

Mission

SpaceX

Updates

Falcon 9 Block 5

Next From Vandenberg SFB

Next From Vandenberg SFB

Sentinel‑6B

Replay

More Videos

The Flight Plan

Countdown9

Ascent6

Booster Return6

Second Stage and Payload4

Mission

SpaceX

Updates

Falcon 9 Block 5

Never Miss a Launch.

Sentinel‑6B

Replay

More Videos

The Flight Plan

Countdown9

Ascent6

Booster Return6

Second Stage and Payload4

Mission

SpaceX

Updates

Falcon 9 Block 5

Next From Vandenberg SFB

Never Miss a Launch.

Next From Vandenberg SFB