Starlink 15-23: Falcon 9 Launch Sept 2, 2026 & How to Watch

SpaceX will launch Starlink Group 15-23 on a Falcon 9 Block 5 rocket on September 2, 2026, at 07:46 UTC from Space Launch Complex 4E at Vandenberg Space Force Base, California. The mission carries a batch of Starlink broadband satellites to low Earth orbit and is currently marked "Go" for launch.

Starlink is SpaceX's satellite internet constellation, a network of thousands of small spacecraft in low Earth orbit that delivers high-speed, low-latency broadband to users worldwide. Group 15-23 adds to the largest satellite constellation ever built, which already numbers more than 8,000 operational satellites.

When is the launch?

The launch is scheduled for 07:46 UTC on September 2, 2026. That corresponds to 12:46 a.m. PDT on the West Coast. As with all Starlink flights, SpaceX typically holds several backup windows across the following days in case of weather or technical delays.

Where is it launching from?

The mission lifts off from Space Launch Complex 4E (SLC-4E) at Vandenberg Space Force Base. Vandenberg's location on the California coast makes it ideal for high-inclination and polar orbits, with rockets flying south over the Pacific. SLC-4E has become one of SpaceX's busiest West Coast pads, supporting a large share of the company's Starlink deployments into shells that require higher orbital inclinations.

You can see the pad and the trajectory in context on the Cosmik live 3D satellite map, and browse other missions from the site on the Vandenberg launch schedule.

What is the payload?

Group 15-23 consists of Starlink V2 Mini satellites bound for low Earth orbit, typically deployed at an altitude of roughly 300 km before raising themselves to an operational altitude near 550 km using onboard ion thrusters. Each Falcon 9 Starlink flight generally carries between 20 and 28 satellites depending on the shell and payload configuration.

The constellation provides direct-to-user internet coverage, and each new batch expands capacity and fills coverage gaps. Follow the freshly deployed spacecraft as they spread out on the Starlink train tracker or explore every active Starlink on the Starlink satellite map.

How to watch live

SpaceX streams its Falcon 9 launches live, with the webcast usually beginning about five minutes before liftoff on the company's official channels. Coverage includes booster ascent, stage separation, the landing burn, and Starlink deployment roughly an hour into flight.

On Cosmik, you can track the countdown, view the vehicle on the map, and set free alerts so you never miss ignition. Check the full rocket launch schedule for the latest timing.

Will the booster land?

SpaceX flies the reusable Falcon 9 Block 5, whose first stage returns to Earth for a propulsive landing on a droneship stationed in the Pacific Ocean. Booster reuse is central to SpaceX's launch economics, with individual boosters having flown more than 20 times each. Successful recovery allows rapid turnaround and supports the cadence needed to keep expanding the Starlink network.

For more on the company and its Falcon 9 program, see the SpaceX launch hub and the Falcon 9 Wikipedia page.

Why this launch matters

Starlink now serves millions of subscribers across more than 100 countries, and SpaceX launches new batches on a near-weekly basis to sustain and grow that service. Each mission like Group 15-23 incrementally increases network throughput and resilience. Background on the constellation is available via the Starlink Wikipedia article, and launch data used here comes from The Space Devs Launch Library.

Learn more about following spacecraft overhead with our guide on how to track satellites, and stay current with the latest launch news.

Follow the launch live on Cosmik

Watch Starlink Group 15-23 lift off in real time and track every deployed satellite on Cosmik's live 3D map. Enable free launch alerts so you get notified before the countdown reaches zero.