Author Topic: SpaceX F9 : Starlink group 15-11 : VSFB SLC-4E : 10 December 2025 (11:40 UTC) (Read 3919 times)

Galactic Penguin SST · « **on:** 11/24/2025 06:32 pm »

Thread for the Starlink Group 15-11 launch.

Launch 10 December 2025, at 11:40:30 UTC (3:40 am PST), from Vandenberg SLC-4E, on booster 1082-18. The first stage successfully landed aboard Of Course I Still Love You.

Payload 27 Starlink V2.0 Mini satellites, to a 70.01 degrees inclination orbit on a southeastern trajectory. Initial orbit 255 x 270 km.

Please use the Starlink Discussion Thread for all general discussion on Starlink.

Check the Starlink Index Thread for links to more Starlink information.

L2 SpaceX: https://forum.nasaspaceflight.com/index.php?board=60.0

Galactic Penguin SST · « **Reply #1 on:** 11/24/2025 06:33 pm »

https://www.spacex.com/launches/sl-15-11

Quote

SpaceX’s Falcon 9 is targeting the launch of 27 Starlink satellites to low-Earth orbit from Space Launch Complex 4 East (SLC-4E) from Vandenberg Space Force Base in California.

A live webcast of this mission will begin about five minutes prior to liftoff, which you can watch here and on X @SpaceX. You can also watch the webcast on the X TV app.

This is the 18th flight for the first stage booster supporting this mission, which previously launched USSF-62, OneWeb Launch 20, NROL-145, and 14 Starlink missions. Following stage separation, the first stage will land on the Of Course I Still Love You droneship, which will be stationed in the Pacific Ocean.

There is the possibility that residents of Santa Barbara, San Luis Obispo, and Ventura counties may hear one or more sonic booms during the launch, but what residents experience will depend on weather and other conditions.

zubenelgenubi · « **Reply #2 on:** 12/01/2025 09:54 pm »

Was:

Quote from: Galactic Penguin SST on 11/24/2025 06:32 pm

Thread for the Starlink Group 15-11 launch.

Launch 10 December 2025, at 15:36 UTC (7:36 am PST), from Vandenberg SLC-4E, on booster 1082-18. The first stage will land aboard Of Course I Still Love You.

Payload 27 Starlink V2.0 Mini satellites, to a 70 degrees inclination orbit on a southeastern trajectory. Initial orbit nnn x nnn km.

Now at https://www.spacex.com/launches/sl-15-11:
4 hour launch window, beginning at 08:54 UTC = 12:54 am PST

Steven Pietrobon · « **Reply #3 on:** 12/07/2025 06:11 am »

PDF of online press kit.

zubenelgenubi · « **Reply #4 on:** 12/07/2025 07:08 pm »

https://celestrak.org/NORAD/elements/supplemental/
Supplemental GP Element Sets
Current as of 2025 Dec 07 19:16:30 UTC (Day 341)

Quote

Starlink G15-11 Pre-Launch
Derived from a pre-launch Starlink-G15-11 state vector, provided by SpaceX. SupGP data is provided for the entire stack, as well as one for a single satellite.
Launch: 2025-12-10 08:54:00 UTC.
Deploy: 2025-12-10 09:55:24.660 UTC.
Launch window: 2025-12-10 08:54:00 UTC to 2025-12-10 12:54:00 UTC.

https://celestrak.org/NORAD/elements/supplemental/table.php?FILE=starlink-g15-11&FORMAT=tle
Pre-Launch Derived Orbit:
255 km x 270 km x 70.01 deg

zubenelgenubi · « **Reply #5 on:** 12/09/2025 01:06 am »

https://celestrak.org/NORAD/elements/supplemental/
Supplemental GP Element Sets
Current as of 2025 Dec 09 01:59:18 UTC (Day 343)

Quote

Starlink G15-11 Pre-Launch
Derived from a pre-launch Starlink-G15-11 state vector, provided by SpaceX. SupGP data is provided for the entire stack, as well as one for a single satellite.

Launch: 2025-12-10 09:02:30 UTC.
Deploy: 2025-12-10 10:03:54.660 UTC.
Launch window: 2025-12-10 09:02:30 UTC to 2025-12-10 09:02:39 UTC.

Backup Launch Opportunity #1
Launch: 2025-12-10 09:02:50 UTC.
Deploy: 2025-12-10 10:04:14.660 UTC.
Launch window: 2025-12-10 09:02:50 UTC to 2025-12-10 09:12:29 UTC.

Backup Launch Opportunity #2
Launch: 2025-12-10 09:12:50 UTC.
Deploy: 2025-12-10 10:14:14.660 UTC.
Launch window: 2025-12-10 09:12:50 UTC to 2025-12-10 09:26:39 UTC.

Backup Launch Opportunity #3
Launch: 2025-12-10 11:40:30 UTC.
Deploy: 2025-12-10 12:41:54.660 UTC.
Launch window: 2025-12-10 11:40:30 UTC to 2025-12-10 11:42:19 UTC.

Backup Launch Opportunity #4
Launch: 2025-12-10 11:42:20 UTC.
Deploy: 2025-12-10 12:43:44.660 UTC.
Launch window: 2025-12-10 11:42:20 UTC to 2025-12-10 11:43:09 UTC.

Backup Launch Opportunity #5
Launch: 2025-12-10 11:46:50 UTC.
Deploy: 2025-12-10 12:48:14.660 UTC.
Launch window: 2025-12-10 11:46:50 UTC to 2025-12-10 11:52:19 UTC.

zubenelgenubi · « **Reply #6 on:** 12/09/2025 05:40 pm »

From https://www.spacex.com/launches/sl-15-11
Launch 11:40:30 UTC = 3:40:30 am PST
Backup Launch Opportunity #3

Quote from: zubenelgenubi on 12/09/2025 01:06 am

https://celestrak.org/NORAD/elements/supplemental/
Supplemental GP Element Sets
Current as of 2025 Dec 09 01:59:18 UTC (Day 343)
Quote
Starlink G15-11 Pre-Launch
Derived from a pre-launch Starlink-G15-11 state vector, provided by SpaceX. SupGP data is provided for the entire stack, as well as one for a single satellite.
<snip>
Backup Launch Opportunity #3
Launch: 2025-12-10 11:40:30 UTC.
Deploy: 2025-12-10 12:41:54.660 UTC.
Launch window: 2025-12-10 11:40:30 UTC to 2025-12-10 11:42:19 UTC.

Backup Launch Opportunity #4
Launch: 2025-12-10 11:42:20 UTC.
Deploy: 2025-12-10 12:43:44.660 UTC.
Launch window: 2025-12-10 11:42:20 UTC to 2025-12-10 11:43:09 UTC.

Backup Launch Opportunity #5
Launch: 2025-12-10 11:46:50 UTC.
Deploy: 2025-12-10 12:48:14.660 UTC.
Launch window: 2025-12-10 11:46:50 UTC to 2025-12-10 11:52:19 UTC.

catdlr · « **Reply #7 on:** 12/10/2025 01:04 am »

Here is a consolidated post of available video links for this launch:

SpaceX's direct live broadcast on
Website: https://www.spacex.com/launches/sl-15-11
Twitter: https://x.com/i/broadcasts/1ypJdqNMyVpxW

SpaceX Re-broadcast alternatives on YouTube:
Space Affairs: https://www.youtube.com/@Space-Affairs/streams

There is no planned NSF Live coverage. Alternate Pre-Launch Coverage: https://youtube.com/watch?v=y7m3YS5qJUY

Replay supplied by The Space Devs (15 min after the broadcast end): https://youtube.com/@thespacedevs/videos

Summary Video provided by SciNews (15 min after the broadcast ends): https://youtube.com/@SciNewsRo/videos

Fleet Booster Number: https://twitter.com/BoosterSpX

catdlr · « **Reply #8 on:** 12/10/2025 10:15 am »

Current Satellite view of VSFB and the Pacific Coast

catdlr · « **Reply #9 on:** 12/10/2025 10:24 am »

Launch and landing Trajectory

catdlr · « **Reply #10 on:** 12/10/2025 10:35 am »

Hazard Map for this flight

catdlr · « **Reply #11 on:** 12/10/2025 10:36 am »

Pressing for Transporter Erector retraction started.

catdlr · « **Reply #12 on:** 12/10/2025 10:37 am »

Transporter Erector retraction started.

catdlr · « **Reply #13 on:** 12/10/2025 10:38 am »

Stage 1 LOX Load Complete

catdlr · « **Reply #14 on:** 12/10/2025 10:38 am »

Stage 2 LOX Load Complete

catdlr · « **Reply #15 on:** 12/10/2025 10:39 am »

GSE closeout

catdlr · « **Reply #16 on:** 12/10/2025 10:39 am »

F9 On Startup

catdlr · « **Reply #17 on:** 12/10/2025 10:40 am »

FD - go for launch

catdlr · « **Reply #18 on:** 12/10/2025 10:41 am »

Launch

https://twitter.com/ENNEPS/status/1998723058069287295

Quote

Elisar Priel
@ENNEPS

SpaceX has launched the Starlink Group 15-11 mission, aboard the Falcon 9 B1082-18 from SLC-4E at the Vandenberg Space Force Base (VSFB), in California, sending 28 Starlink v2 Mini satellites into Low Earth Orbit.

NASASpaceflight Overview: https://nasaspaceflight.com/2025/12/launch-roundup-120825/

catdlr · « **Reply #19 on:** 12/10/2025 10:42 am »

Climb Out
MAX-Q