SITEVandenberg AFB →
ORBITSun-synchronous LEO
MISSION OVERVIEW
Heat Capacity Mapping Mission satellite launched to study Earth’s thermal properties. This was an important Earth observation mission that provided valuable data on surface temperatures and thermal inertia.
LAUNCH DETAILS
LAUNCH TIME VERIFICATION
CONFIRMED
This launch date and time are confirmed by the launch provider. Countdown is active.
FREQUENTLY ASKED QUESTIONS
When is the Scout D-1 | HCMM launch?
The Scout D-1 | HCMM is scheduled for Wednesday, April 26, 1978 at 10:17 PM UTC. This is the NET (No Earlier Than) time and may be subject to change. Current status: SUCCESS.
What rocket is being used for Scout D-1 | HCMM?
The Scout D-1 | HCMM mission uses the Scout rocket.
Where is the Scout D-1 | HCMM launching from?
The launch takes place from Vandenberg AFB.
What orbit is Scout D-1 | HCMM going to?
The Scout D-1 | HCMM mission is targeting Sun-synchronous LEO.
Who is launching Scout D-1 | HCMM?
The Scout D-1 | HCMM is operated by NASA.
Can I watch the Scout D-1 | HCMM launch live?
Yes. Visit the launch detail page on Space Launch Live for embedded YouTube webcasts, replay videos, and links to live coverage from SpaceX, NASA, NASASpaceflight, and other channels.
LAUNCH TIMELINE
Mar 31, 2026 01:20 UTC
Launch added to tracker
Imported from Launch Library 2 API
Mar 31, 2026 01:20 UTC
Launch date set: Apr 26, 1978 at 22:17 UTC
NET (No Earlier Than) confirmed by NASA
Mar 31, 2026 01:20 UTC
Launch completed successfully
Updated via Launch Library 2
LIVE DATA SOURCES
Last data sync: 10 seconds ago
Mission Profile
Scout D-1 | HCMM was a Scout mission operated by NASA that lifted off from Vandenberg AFB on April 26, 1978. The flight carried its payload to Sun-synchronous LEO. The launch was a success.