SpaceX - Falcon 9 - Starlink 15-12 - SLC-4E - Vandenberg SFB - December 13, 2025

Launch Date: December 13, 2025 (PST) Launch Time: 9:49 p.m. PST (December 14, 0549 UTC, 06:49 CET) Launch Window: Open until December 14, 1:20 a.m. PST Launch Site: SLC-4E - Vandenberg Space Force Base, California Targeted Orbit: Low Earth Orbit (LEO) Launch Inclination: Southeast Launch Status: Nominal orbit insertion - Falcon 9 Booster landed successfully on the droneship. Mission: Starlink Group 15-12 Launch Provider: SpaceX Launcher System: Falcon 9 (Booster B1093 - Turnaround 36 days) Flight for the Booster: 9 Previous Flights of the Booster: 8 - SDA T1TL-B, SDA T1TL-C, and six Starlink missions Droneship: Of Course I Still Love You (OCISLY) Price: $69,75 million (without payload) Diameter: 3,7 m Height: 70 meters Payload to Orbit: 22,800 LEO / 8,300 GTO Lift-Off Thrust: 7,607 kilonewtons Fairing: Diameter 5,2 meters / Height 13 meters Stages: 2 SpaceX’s Falcon 9 is targeting the launch of 27 Starlink satellites to low-Earth orbit from Space Launch Complex 4 East (SLC-4E) at Vandenberg Space Force Base in California. This is the ninth flight for the first stage booster supporting this mission, which previously launched SDA T1TL-B, SDA T1TL-C, and six 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. Residents of Santa Barbara, San Luis Obispo, and Ventura counties may hear one or more sonic booms during the launch, but what they experience will depend on weather and other conditions. You will find more information about the trajectory and data on the day of the launch here: https://flightclub.io/live Countdown Hr/Min/Sec Event 00:38:00 SpaceX Launch Director verifies go for propellant load 00:35:00 RP-1 (rocket grade kerosene) loading begins 00:35:00 1st stage LOX (liquid oxygen) loading begins 00:16:00 2nd stage LOX loading begins 00:07:00 Falcon 9 begins engine chill prior to launch 00:01:00 Command flight computer to begin final prelaunch checks 00:01:00 Propellant tank pressurization to flight pressure begins 00:00:45 SpaceX Launch Director verifies go for launch 00:00:03 Engine controller commands engine ignition sequence to start 00:00:00 Falcon 9 liftoff