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Mission
A batch of 27 satellites for the Starlink mega-constellation - SpaceX’s project for space-based Internet communication system.
Falcon 9 launched Starlink 15-23 from Space Launch Complex 4E (SLC-4E) at Vandenberg Space Force Base in California. This was the 35th flight for the first stage booster supporting this mission, B1063, which previously launched Starlink 17-53. After stage separation, the first stage landed on the Of Course I Still Love You droneship.
- Launched
- 01:42 PDT at the pad
- Rocket
- Falcon 9 Block 5SpaceX
- Destination
- Low Earth Orbit
- Launch site
- Space Launch Complex 4E, Vandenberg, California56th launch from this pad in 20267 days after the last
- Latest update
- Launch success.
1h2min
Mission duration
35th
Flight of B1063
574km
Downrange landing, OCISLY
106th
SpaceX launch of 2026
Countdown
All times approximate, in your time zone (CEST)Timeline: The Space Devs
- T−00:38:00GO for Prop Load
- T−00:35:00Stage 1 LOX Load1st stage
- T−00:35:00Prop Load
- T−00:16:00Stage 2 LOX Load2nd stage
- T−00:07:00Engine Chill
- T−00:01:00Startup
- T−00:01:00Tank Press
- T−00:00:45GO for Launch
- T−00:00:03Ignition
Mission profile
From liftoff to orbit
- SLC-4E
- OCISLY574 km downrange
- LiftoffT+00:00:00
- Max-QT+00:01:08
- Stage separationT+00:02:29
- FairingT+00:02:57
- LandingT+00:08:24
- SECOT+00:08:38
- Starlink deployT+01:02:04
- SLC-4E
- OCISLY574 km downrange
- LiftoffT+00:00:00
- Stage separationT+00:02:29
- LandingT+00:08:24
- Starlink deployT+01:02:04
Flight
All times approximate, in your time zone (CEST)Timeline: The Space Devs
- T+00:00:00Liftoff
- T+00:01:08Max-Q
- T+00:02:25MECO
- T+00:02:29Stage 2 Separation
- T+00:02:36SES-12nd stage
- T+00:02:57Fairing Separation2nd stage
- T+00:06:01Entry Burn Startup1st stage
- T+00:06:25Entry Burn Shutdown1st stage
- T+00:08:01Stage 1 Landing Burn1st stage
- T+00:08:24Stage 1 Landing1st stage
- T+00:08:38SECO-12nd stage
- T+00:53:12SES-22nd stage
- T+00:53:13SECO-22nd stage
- T+01:02:04Starlink DeploymentPayload
Falcon 9 Block 5
SpaceXReusable634 launches since May 2018, 633 successful
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- BoosterB106335th flightpreviously Starlink 17-53Landed on Of Course I Still Love You (OCISLY)
About Falcon 9 Block 5
Falcon 9 is a two-stage rocket designed and manufactured by SpaceX for the reliable and safe transport of satellites and the Dragon spacecraft into orbit. The Block 5 variant is the fifth major interval aimed at improving upon the ability for rapid reusability.
70m
Height
3.7m
Diameter
549t
Mass at liftoff
7,607kN
Thrust at liftoff
23t
Payload to low Earth orbit
8.3t
Payload to geostationary transfer orbit
In orbit now
The crewed stations, Hubble and Starlink 31-1, once around the Earth every 90 to 94 minutes
| Spacecraft | Altitude | Speed |
|---|---|---|
| ISSDocked: Crew-12, Soyuz MS-29In Earth’s shadow | 435km | 27,547km/h |
| TiangongDocked: Shenzhou-23In Earth’s shadow | 391km | 27,638km/h |
| Crew-12In Earth’s shadow | 435km | 27,547km/h |
| Shenzhou-23In Earth’s shadow | 391km | 27,638km/h |
| Soyuz MS-29In Earth’s shadow | 435km | 27,547km/h |
| HubbleIn Earth’s shadow | 474km | 27,471km/h |
| Starlink 31-126 satellites from Starship Flight 14, launched 2 days ago; numbers for the first in lineIn sunlight | 267km | 27,901km/h |
Estimated for from CelesTrak’s orbital elements, Starlink 31-1’s fitted to SpaceX’s own data, up to 17 h old.
