SDA Tranche 1 Transport Layer D — time, objective & broadcast
Falcon 9: Q4 2026 · UTC. A government mission. The detailed objective has not been publicly disclosed.
Falcon 9
SDA Tranche 1 Transport Layer D
Mission objective
A government mission. The detailed objective has not been publicly disclosed.
ORBIT: PO
Q4 2026 · UTC
Tentative quarter · Schedule may change
Understand this mission
Typically 200–1,000 km
Polar orbit · PO
The path passes near Earth’s poles.
Exact altitude for this mission: unavailable in our source. This is an orbit-type reference, not this flight’s planned or achieved altitude.
Orbit explanation · ESA ↗For scale: about 0.05–0.26% of the average distance from Earth’s surface to the Moon’s centre. Compare with the Moon and learn the basics ↗
How far is that, really?
Beyond a number of kilometres — a distance you can picture.
Automatic examples use the approximate country of your connection. GPS is not needed. If it is wrong or no local example is available, choose one manually.
New York – Washington, DC
About 330 kmStraight-line distance between city reference points. This is not driving distance.
This range is comparable to the local reference. About 0.6–3 × the New York–Washington, DC distance.
Imagine rotating the distance between these places so it points straight up. That helps you picture how high space is.
How is the distance calculated?
An approximation along a sphere of radius 6,371 km, calculated from GeoNames coordinates. Values are rounded to suit the distance. This is an educational comparison, not travel planning.
This compares an orbit-type reference range. The exact altitude of this mission is not confirmed by our source.
What is it for?
Government mission: some details may be classified.
Explanation of the mission category reported by the source.Rocket or payload?
Falcon 9 is the launch vehicle. Its payload is what it carries, such as a satellite, probe or spacecraft. Rocket stages can follow different paths.
How a launch works · NASA ↗Quick glossary: orbit, stage, apogee and perigee
- Orbit
- A path around a body such as Earth. Reaching orbit requires enough speed as well as altitude.
- Rocket stage
- A rocket section with its own propulsion for part of the flight.
- Apogee / perigee
- The farthest / nearest point to Earth on an orbit. This is why altitude is often described by two numbers.
Vandenberg SFB, CA, USA
Space Launch Complex 4E
34.63200°, -120.61100°
Open the exact location ↗Launch broadcasts
No broadcast link has been published in our source yet. Check back closer to launch.
Launch window
31 Dec 2026, 00:00 → 31 Dec 2026, 00:00 · UTC
What does a launch window mean? ↗Calendar downloads are one-time entries and do not track rescheduling.
The data could not be confirmed as current. Showing a saved dataset; verify the schedule with the operator.