SpaceX - Falcon 9 - Starlink 6-99 - LC-39A - Kennedy Space Center - December 17, 2025

Launch Date: December 17, 2025
Launch Time: 8:42 a.m. EST, 1342 UTC, 1442 CET
Launch Window: Open until 11:19 a.m. EST
Launch Site: LC-39A - Kennedy Space Center, Florida
Targeted Orbit: LEO (Low Earth Orbit)
Launch Inclination: Southeast
Launch Status: Nominal orbit insertion, Falcon 9 booster landed successfully on the droneship.

Mission: Starlink 6-99
Launch Provider: SpaceX
Launcher System: Falcon 9 (Booster 1094 - Turnaround 39 days)
Flight for the Booster: 6
Previous Flights of the Booster: 5 - Ax-4, Crew-11, Cygnus NG-23, and two Starlink missions
Droneship: Just Read The Instructions

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 29 Starlink satellites to low-Earth orbit from Launch Complex 39A (LC-39A) at NASA's Kennedy Space Center in Florida.

This will be the sixth flight for the first stage booster supporting this mission, which previously launched Ax-4, Crew-11, Cygnus NG-23, and two Starlink missions. Following stage separation, the first stage will land on the Just Read the Instructions droneship, which will be stationed in the Atlantic Ocean.

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