China Aerospace Science and Technology CorporationGO
Long March 4B | Unknown Payload
Pad: Launch Area 94 (SLS-2 / 603) · Jiuquan Satellite Launch Center, People's Republic of China
Details TBD.
Mission StatusUTC / SYNCED
MISSION WINDOW CONCLUDED
Long March 4B
LiftoffLong March 5 Y4 Launching Tianwen-1 to Mars
Photo: CNSA / Our Space
Get Alerted for Long March 4B | Unknown Payload
Receive an email alert 1 hour prior to liftoff with live webcast links.
Official Live Launch Webcast
Long March 4B | Unknown Payload Live Coverage
Official Webcast Feed Scheduled
Live broadcast embeds typically go live 15 to 20 minutes prior to launch window liftoff. Check the official China Aerospace Science and Technology Corporation channels or Spaceflight Now for live feeds.
Host: China Aerospace Science and Technology Corporation Flight OpsWindow: Fri, 23 Oct 2026 19:17:00 GMT
Status: GO
🛰️ Mission Orbital & Environment Matrix
- Target Orbit
- N/A
- Target Altitude
- 550 km
- Inclination
- 53.2°
- Weather Violation Risk
- 10%
- Primary Payload
- Unknown Payload
- Launch Window
- Friday, October 23, 2026 at 07:17 PM UTC – 07:39 PM UTC
🚀 Vehicle Architecture & Stage Configuration
- Architecture Type
- Single-Use Expendable
- Recovery Strategy
- None (Ocean Trajectory)
- Core Propulsion
- Liquid Cryogenic / Staged
- Upper Stage
- High-Energy Re-ignitable
- Fairing Shroud
- Standard Aerodynamic Shroud (Direct Jettison)
- Vehicle Architecture
- Long March 4B Propulsion & Staging Specs →
⏱️ Operational Timeline Milestones & Staging Sequence
Target T-0: 2026-10-23Terminal Count
T-00:15:00Autonomous launch sequence start
Auto Sequence
T-00:03:00Flight computer assumes control
Liftoff
T-00:00:00Stage 1 main engine ignition & liftoff
MECO & Stage Sep
T+00:02:40Main engine cut-off and stage separation
Stage 1 Landing
T+00:08:30Booster touchdown on recovery vessel / zone
Payload Deploy
T+00:45:00Spacecraft insertion into target orbit
Launch Complex & Spaceport
Launch Area 94 (SLS-2 / 603)
Cape Canaveral Space Force Station · Jiuquan Satellite Launch Center, People's Republic of China
Rocket On Pad
Falcon 9 Standing at SLC-40
Falcon 9 vertical on Space Launch Complex 40 with lightning suppression towers at Cape Canaveral Space Force Station.
Photo Credit: NASA / Joel KowskySLC-40 is the world's most active orbital launch facility. Originally constructed for Titan III and Titan IV rockets, SpaceX leased and modernized the pad in 2008. In 2024, SpaceX added a new crew access tower to enable astronaut and cargo Dragon launches directly from SLC-40.
Operator
U.S. Space Force / SpaceX
Elevation
3 meters (ASL)
Azimuth Range
35°
Flight History
210+ Orbital Missions
Key Pad Facilities & Ground Support Equipment (GSE)
Transporter Erector (TE)Hydraulic cradle that rolls Falcon 9 horizontally from the HIF and erects it vertically onto the launch mount.
Horizontal Integration Facility (HIF)Weatherproof processing hangar where stages and payloads are mated prior to rollout.
Cryogenic Propellant FarmSub-cooled Liquid Oxygen (LOX) and chilled RP-1 kerosene high-flow loading system.
Crew Access TowerModernized 2024 tower providing crew ingress and emergency egress slide-wire systems.