SDA Tranche 1 Tracking Layer D

Overview

Destination: Polar Orbit
Mission: Government/Top Secret

Polar Orbit Space Launch Complex 4E Vandenberg SFB, CA, USA

Tranche 1 Tracking Layer D is one of five missions by the United States Space Force Space Development Agency (SDA) for the Proliferated Warfighter Space Architecture (PWSA) Tranche 1 Tracking Layer constellation, which will provide global indications, warning, tracking, and targeting of advanced missile threats, including hypersonic missile systems.

Updates

Cosmic_Penguin • Oct. 25, 2026, 4:56 a.m.

Launch vehicle swap with SDA Tranche 1 Tracking Layer E.




Falcon 9

Family:
Configuration: 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.

See Details
Specifications
  • Stages
    2
  • Length
    70.0 m
  • Diameter
    3.65 m
  • Fairing Diameter
    5.2 m
  • Launch Mass
    549.0 T
  • Thrust
    7607.0 kN
Family
  • Name
    Falcon 9
  • Family
    ―
  • Variant
    Block 5
  • Alias
    ―
  • Full Name
    Falcon 9 Block 5
Payload Capacity
  • Launch Cost
    $52000000
  • Low Earth Orbit
    22800.0 kg
  • Geostationary Transfer Orbit
    8300.0 kg
  • Direct Geostationary
    ―
  • Sun-Synchronous Capacity
    ―

SpaceX

SpaceX

(SpX)

CEO: Elon Musk Founded: 2002 Successes: 726 Failures: 15 Pending: 136

Agency Type:

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.

INFO WIKI
SpaceNews

Space Force assigns 12 national security missions to SpaceX and ULA

The U.S. Space Force launch procurement office on June 8 announced an additional 12 missions assigned to SpaceX and United Launch Alliance under the National Security Space Launch Phase 2 contract.

Vandenberg SFB, CA, USA

Space Launch Complex 4E


Long March 8A
Success
6 hours, 29 minutes ago
SatNet LEO Group 28
Commercial LC-1 - Wenchang Space Launch Site, People's Republic of China

A batch of 9 Low Earth Orbit communication satellites for the Chinese state owned SatNet constellation operated by the China Satellite Network Group.…


Falcon 9
Success
1 day, 9 hours ago
Starlink Group 15-15
Space Launch Complex 4E - Vandenberg SFB, CA, USA

A batch of 27 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.


Long March 4B
Success
1 day, 13 hours ago
Yaogan 53-07 to 09/56-19 to 21
Launch Area 94 (SLS-2 / 603) - Jiuquan Satellite Launch Center, People's Republic of China

6 Chinese military “remote sensing” satellite of unknown purposes.


Long March 6A
Success
1 day, 22 hours ago
Yaogan 50-03
Launch Complex 9A - Taiyuan Satellite Launch Center, People's Republic of China

The Yaogan 50-03 is a Chinese military “remote sensing” satellite of unknown purposes.


Electron
Success
2 days, 1 hour ago
We're Not Hawking Around (3x HawkEye 360)
Rocket Lab Launch Complex 1A - Rocket Lab Launch Complex 1, Mahia Peninsula, New Zealand

HawkEye 360 is a a space-based civil global intelligence satellite network using radio frequency (RF) technology to help monitor transportation acros…


Ceres-1S
Success
4 days, 4 hours ago
Xiguang-4 01
Rizhao offshore launch location - Haiyang Oriental Spaceport

0.5 meter resolution Earth observation satellite for the city of Guangzhou government and Guangzhou University with multi-spectral imaging capability…


Falcon 9
Success
4 days, 21 hours ago
Bandwagon 5 (Dedicated Mid-Inclination Rideshare)
Space Launch Complex 40 - Cape Canaveral SFS, FL, USA

Dedicated rideshare flight to a mid-inclination orbit with dozens of small microsatellites and nanosatellites for commercial and government customers…


H3-24
Success
5 days, 12 hours ago
Martian Moons eXploration (MMX)
Yoshinobu Launch Complex LP-2 - Tanegashima Space Center, Japan

MMX is a Japanese scientific mission to land on Phobos, one of the two moons of Mars, to collect samples before bringing them back to Earth. The m…


Falcon 9
Success
1 week, 2 days ago
USSF-481
Space Launch Complex 4E - Vandenberg SFB, CA, USA

A classified mission for the United States Space Force. It is possibly a batch of classified LEO satellites based on SpaceX’s Starshield satellite bu…


Zhuque-2E Block 2
Success
1 week, 3 days ago
10 satellites
Launch Area 96A - Jiuquan Satellite Launch Center, People's Republic of China

Ride-share of 10 satellites to sun-synchronous orbit, including: * Guangchuan-03 & 04 (LT-03/04) from LandSpace's subsidiary LandTower for testing…