GRACE-C
Date unconfirmedFalcon 9 Block 5SpaceXPOSpare capacity
Planned (NET)
Q4 2028
Quarter 4 precision
Countdown
—
No day-level date yet
Slip vs first seen
No slip
tracking since 14 Oct 2026
GRACE-C (Gravity Recovery and Climate Experiment-Continuity) is a successor to the original GRACE and GRACE-FO missions, providing month-to-month changes of Earth's gravity field to track water movement and surface mass changes across the planet, monitoring variations in ice sheets, glaciers, underground water storage, soil moisture, and sea levels. GRACE-C consists of two identical satellites flying around 200 km apart at an orbit altitude of 500 km with an inclination of 89 degrees. Each satellite will measure approximately 3 x 2 x 1 meters and weigh around 600 kg. This launch will also carry ride-sharing small satellites via Exolaunch.— Launch Library 2 mission description
Notes: Found by the auto-detector on first update run and reviewed: LL2 description says 'This launch will also carry ride-sharing small satellites via Exolaunch.' Primary mission is NASA/DLR GRACE-C (two ~600 kg satellites).
Fields, sources and dates
| Field | Value | Source · as of |
|---|---|---|
| Mission | GRACE-C | Launch Library 2 verified 18 Oct 2026, 06:47 PT |
| Type | Spare capacity | Our classification from the source description (see methodology) |
| Launch vehicle | Falcon 9 Block 5 | Launch Library 2 verified 18 Oct 2026, 06:47 PT |
| Launch provider | SpaceX | Launch Library 2 verified 18 Oct 2026, 06:47 PT |
| Brokers / integrators named | Exolaunch | Launch Library 2 verified 18 Oct 2026, 06:47 PT |
| Orbit | PO | Launch Library 2 verified 18 Oct 2026, 06:47 PT |
| Orbit detail | unknown | — |
| Launch site | Vandenberg SFB, CA, USA · Space Launch Complex 4E | Launch Library 2 verified 18 Oct 2026, 06:47 PT |
| Planned date (NET) | Q4 2028 (Quarter 4 precision) | Launch Library 2 verified 18 Oct 2026, 06:47 PT |
| Status | To Be Determined | Launch Library 2 verified 18 Oct 2026, 06:47 PT |
| Accepting payloads? | unknown | — |
| Capacity remaining | unknown | — |
| Booking lead time | unknown | — |
| How to book | Contact Exolaunch | Derived from provider/broker named in sources |
| Published price | unknown (no published price found) | — |
Slip history
Current slip vs first seen: no change since 14 Oct 2026. Tracking began 14 Oct 2026, 21:05 PT; changes before that are not recorded.
| Recorded | Event | Value | Source |
|---|---|---|---|
| 14 Oct 2026, 21:28 PT | First seen (baseline) | Q4 2028 · To Be Determined | LL2 |
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Sources
- Launch Library 2 (The Space Devs) record · retrieved 2026-10-15
- Exolaunch · retrieved 2026-10-14