SDA Tranche 1 Tracking Layer A

Overview

Destination: Polar Orbit
Mission: Government/Top Secret

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

Tranche 1 Tracking Layer A 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 • Jan. 28, 2026, 6:41 p.m.

NET May-Q2 (unclear which of the lettered groups will fly first).



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: 621 Failures: 15 Pending: 127

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

Vandenberg SFB, CA, USA

Space Launch Complex 4E


Falcon 9
Success
1 day, 1 hour ago
Crew-12
Space Launch Complex 40 - Cape Canaveral SFS, FL, USA

SpaceX Crew-12 is the twelfth crewed operational flight of a Crew Dragon spacecraft to the International Space Station as part of NASA's Commercial C…


Ariane 64
Success
1 day, 19 hours ago
Amazon Leo (LE-01)
Ariane Launch Area 4 - Guiana Space Centre, French Guiana

Amazon Leo, formerly known as Project Kuiper, is a mega constellation of satellites in Low Earth Orbit that will offer broadband internet access, thi…


Vulcan VC4S
Success
2 days, 2 hours ago
USSF-87
Space Launch Complex 41 - Cape Canaveral SFS, FL, USA

USSF-87 will launch two identical Geosynchronous Space Situational Awareness Program (GSSAP) satellites GSSAP-7 and GSSAP-8 directly to a near-geosyn…


Proton-M
Success
2 days, 3 hours ago
Elektro-L No.5
81/24 (81P) - Baikonur Cosmodrome, Republic of Kazakhstan

Elektro-L is a series of meteorological satellites developed for the Russian Federal Space Agency by NPO Lavochkin. They are designed to capture real…


Smart Dragon 3
Success
2 days, 5 hours ago
PRSC-EO2 & 6 satellites
South China Sea (launch location 3) - Haiyang Oriental Spaceport

Carried 7 satellites to sun-synchronous orbit, including PRSC-EO2 (Earth observation satellite for the Pakistan government's SUPARCO) & CUHK-1. Detai…


Falcon 9
Success
2 days, 18 hours ago
Starlink Group 17-34
Space Launch Complex 4E - Vandenberg SFB, CA, USA

A batch of 24 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.


Falcon 9
Success
6 days, 15 hours ago
Starlink Group 17-33
Space Launch Complex 4E - Vandenberg SFB, CA, USA

A batch of 25 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.


Long March 2F/G
Success
1 week ago
Chinese Reusable Space Vehicle
Launch Area 91 (SLS-1 / 921) - Jiuquan Satellite Launch Center, People's Republic of China

4th flight of the Chinese spaceplane capable of returning to Earth.


Soyuz 2.1b/Fregat-M
Success
1 week, 1 day ago
Kosmos (Unknown Payload)
43/4 (43R) - Plesetsk Cosmodrome, Russian Federation

Unknown classified payload(s) for the Russian military.


Falcon 9
Success
1 week, 4 days ago
Starlink Group 17-32
Space Launch Complex 4E - Vandenberg SFB, CA, USA

A batch of 25 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.