Don't Be Such A Square (STP-S30)
Electron, Rocket Lab
Rocket Lab Launch Complex 2 (Launch Area 0 C), Wallops Flight Facility, Virginia, USA
Launch time
T-0
Thu 18 Dec, 06:03 CET
05:03 UTC
The rocket put its payload into the planned orbit.
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How sure is this date?
The source gives minute precision. Launch plans can change.
Launch probability 80%
Launch record updated by LL2
Feed checkedMission
Don't Be Such A Square (STP-S30) on Electron. Thu 18 Dec 2025, 05:03 UTC. Reported outcome: Success. Launch site: Rocket Lab Launch Complex 2 (Launch Area 0 C). Source: Launch Library 2.
STP-S30 is a complex mission that will deliver research experiments and technology demonstrations to orbit for the DoD and contribute to future space systems development. The projected primary payload, DISKSat, will demonstrate sustained very low earth orbit (VLEO) flight and test a unique, 1-meter diameter, disk-shaped satellite bus that is designed to increase on-orbit persistence.
- Mission type
- Technology
- Orbit
- Low Earth Orbit
Rocket file imagery

File imagery: Virginia is for Launch Lovers, 24 January 2023. Electron lifting off from Rocket Lab Launch Complex 2 at Wallops.
Credit: NASA/Danielle Johnson · Public domain (NASA) · SourceMission patches
- Don't Be Such A Square Patch
Patch artwork is not shown because its image licence is unconfirmed.
Launch timeline
Times are relative to liftoff.
- T-2 min
Startup
The onboard computer takes control over the countdown and runs last checks
- T-2 s
Ignition
Start of the engine ignition sequence
- T-0
Liftoff
First upwards movement of the rocket
- T+1 min 11 s
Supersonic
Vehicle is supersonic
- T+1 min 14 s
Max-Q
Maximum dynamic pressure
- T+2 min 40 s
MECO
Cut-off of the main engine
- T+2 min 44 s
Stage 2 Separation
Separation of the second stage from the first
- T+2 min 47 s
SES
Start of the second engine
- T+3 min 41 s
Fairing Separation
Separation of the payload fairing
- T+6 min 40 s
Battery Hotswap
Electron Second stages switches to a new set of batteries and jettisons the depleted ones.
- T+9 min 19 s
SECO
Cut-off of the second engine
- T+9 min 23 s
Kick Stage Separation
Separation of the kick stage from the previous stage
- T+53 min 44 s
Kick Stage Ignition
Start of the kick stage engine
- T+55 min 30 s
Payload Separation
Final deployment of the payload from the rocket
- T+55 min 30 s
Kick Stage Cut-off
Cut-off of the kick stage engine
Slip history
Changes recorded by Space Right Now
No changes since we started tracking on .
Source updates from Launch Library 2 (11)
Announcements supplied by LL2 may predate our tracking. They are separate from changes observed by Space Right Now.
- LL2 update
Launch success.
Read the source update - LL2 update
All 4 spacecraft has separated.
Read the source update - LL2 update
Liftoff.
Read the source update - LL2 update
Tweaked T-0 and weather forecast.
Read the source update - LL2 update
Updated launch weather, 70% GO.
Read the source update - LL2 update
GO for launch.
Read the source update - LL2 update
GO for launch (launch window is per https://forum.nasaspaceflight.com/index.php?topic=63362.msg2742010#msg2742010).
Read the source update - LL2 update
Moved back to NET December with appearance of possible marine navigation warnings NET December 18; to be confirmed as for this launch.
Read the source update - LL2 update
NET December 8.
Read the source update - LL2 update
NET late 2025.
Read the source update - LL2 update
Added launch
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Launch pad
Rocket Lab Launch Complex 2 (Launch Area 0 C)
Wallops Flight Facility, Virginia, USA (US)
Coordinates: 37.833262, -75.488235
View launch pad on a map