Success
GPS III SV10
Navigation
SpaceX(SpX)CommercialFalcon 9 Block 5
MEOorbit
Tenth of ten GPS III missions.
Tuesday, April 21, 2026 at 6:53 AM
Replay
Flight Timeline
- T-38:00GO for Prop Load
- T-35:00Stage 1 LOX Load
- T-35:00Prop Load
- T-16:00Stage 2 LOX Load
- T-07:00Engine Chill
- T-01:00Startup
- T-01:00Tank Press
- T-00:45GO for Launch
- T-00:03Ignition
- T+00:00Liftoff
- T+01:17Max-Q
- T+02:29MECO
- T+02:32Stage 2 Separation
- T+02:40SES-1
- T+03:29Fairing Separation
- T+06:12Entry Burn Startup
- T+06:41Entry Burn Shutdown
- T+08:06SECO-1
- T+08:09Stage 1 Landing Burn
- T+08:34Stage 1 Landing
- T+1:03:31SES-2
- T+1:04:18SECO-2
- T+1:29:19Payload Separation
Links
Mission details
The Global Positioning System (GPS), originally Navstar GPS, is a satellite-based radio navigation system owned by the United States government and operated by the United States Space Force. It is one of the global navigation satellite systems (GNSS) that provide geolocation and time information to a GPS receiver anywhere on or near the Earth where there is an unobstructed line of sight to four or more GPS satellites.
Feb 22, 1978 — ongoing
Orbital Attempt
#7,265
SpX Mission
#667
Pad Launch
#379
Location Launch
#1,104
Designator
2026-087
Weather GO
90%
Weather Concerns
Cumulus Cloud Rule, Thick Cloud Layers Rule
Launch Window
NET
Apr 21, 2026, 6:53 AM
Precision
Second
Schedule Changes
8 updates
Schedule Updates
8 entries- Current scheduleCurrentNo NET changeApr 21, 2026, 9:38 AMApr 21, 2026, 6:53 AM(Second)Success
- Schedule updatedNo NET changeApr 21, 2026, 8:24 AMApr 21, 2026, 6:53 AM(Second)Deployed
- Schedule updatedNo NET changeApr 21, 2026, 6:54 AMApr 21, 2026, 6:53 AM(Second)In Flight
- Schedule updatedNo NET changeApr 20, 2026, 2:30 PMApr 21, 2026, 6:53 AM(Second)Go
- Schedule updatedDelayed 23h 55mApr 19, 2026, 3:08 PMApr 21, 2026, 6:53 AM(Minute)GoWindow: 6:53 AM – 7:08 AM
- Schedule updatedNo NET changeApr 19, 2026, 7:12 AMApr 20, 2026, 6:57 AM(Second)Go
- Schedule updatedDelayed 9mApr 16, 2026, 7:09 PMApr 20, 2026, 6:57 AM(Minute)GoWindow: 6:57 AM – 7:12 AM
- Initial scheduleApr 16, 2026, 12:03 PMApr 20, 2026, 6:48 AM(Minute)TBC
Falcon 9 Block 5 Specs
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.
Length
70 m
Diameter
3.65 m
Launch Mass
549 t
Thrust
7,607 kN
LEO Capacity
22,800 kg
GTO Capacity
8,300 kg
Launch Cost
$52M
Reusable
Yes
Maiden Flight
2018
Fastest Turnaround
1h 5m
Total Launches
586
Successful
585
Failed
1
Consecutive Success
288
Maiden flight: May 11, 2018
Social Flight Log
- Apr 21, 2026, 9:36 AM
Launch success.
Source - Apr 21, 2026, 8:23 AM
Spacecraft separation.
Source - Apr 21, 2026, 6:53 AM
Liftoff.
Source - Apr 21, 2026, 6:37 AM
Unofficial Re-stream by SPACE AFFAIRS has started
Source - Apr 20, 2026, 6:07 PM
Updated launch weather, 90% GO.
Source - Apr 20, 2026, 2:28 PM
Tweaked T-0.
Source - Apr 19, 2026, 3:04 PM
Now targeting Apr 21 at 06:53 UTC
Source - Apr 19, 2026, 7:08 AM
Now targeting Apr 20 at 06:57 UTC
Source - Apr 16, 2026, 7:06 PM
GO for launch.
Source - Apr 13, 2026, 5:19 PM
NET April 20 per NOTAMs; TBC.
Source - Mar 20, 2026, 6:54 PM
Launch vehicle switched from Vulcan to Falcon 9 due to continuous problems with Vulcan’s sold rocket boosters.
Source - Jan 28, 2026, 6:46 PM
NET March.
Source - Aug 29, 2025, 2:16 PM
Aiming for launch in late 2025.
Source - Oct 31, 2023, 7:31 PM
Adding launch
Source
SpaceX
Space Exploration Technologies Corp., known as SpaceX, is an American aerospace manufacturer and space transport services company headquartered in Hawthorne, California. It was founded in 2002 by entrepreneur Elon Musk with the goal of reducing space transportation costs and enabling the colonization of Mars. SpaceX operates from many pads, on the East Coast of the US they operate from SLC-40 at Cape Canaveral Space Force Station and historic LC-39A at Kennedy Space Center. They also operate from SLC-4E at Vandenberg Space Force Base, California, usually for polar launches. Another launch site is being developed at Boca Chica, Texas.
Founded
2002
Administrator
CEO: Elon Musk
Total Launches
681
Successful
666
Failed
15
Pending
120
Consecutive Success
166
Cape Canaveral SFS, FL, USA
Cape Canaveral Space Force Station (CCSFS) is an installation of the United States Space Force's Space Launch Delta 45, located on Cape Canaveral in Brevard County, Florida.
Timezone
America/New_York
Local Launch Time
Apr 21, 2026, 2:53 AM
Total Launches
1,109
Total Landings
75
Coordinates
28.4889, -80.5778