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STS-51-D launch Astrology Chart | Astrotechne
event STS-51-D launch Chart date & time
April 12, 1985 at 8:59 AM EST
Time precision
Second precision
Chart place
Launch Complex 39A, Kennedy Space Center, Florida, United States
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Public connections Karol J. Bobko Mission commander wikipedia · Actual onboard mission crew; the role applies to the mission including this Earth launch.nasa.gov · NASA’s individual mission page independently identifies this mission crew, orbiter or operator role.Donald E. Williams Mission pilot wikipedia · Actual onboard mission crew; the role applies to the mission including this Earth launch.nasa.gov · NASA’s individual mission page independently identifies this mission crew, orbiter or operator role.S. David Griggs Mission specialist / flight engineer wikipedia · Actual onboard mission crew; the role applies to the mission including this Earth launch.nasa.gov · NASA’s individual mission page independently identifies this mission crew, orbiter or operator role.Jeffrey A. Hoffman Mission specialist wikipedia · Actual onboard mission crew; the role applies to the mission including this Earth launch.nasa.gov · NASA’s individual mission page independently identifies this mission crew, orbiter or operator role.Charles D. Walker Mission payload specialist wikipedia · Actual onboard mission crew; the role applies to the mission including this Earth launch.nasa.gov · NASA’s individual mission page independently identifies this mission crew, orbiter or operator role.Jake Garn Mission payload specialist wikipedia · Actual onboard mission crew; the role applies to the mission including this Earth launch.nasa.gov · NASA’s individual mission page independently identifies this mission crew, orbiter or operator role.NASA Mission operator wikipedia · The mission infobox names NASA as operator.nasa.gov · NASA’s individual mission page independently identifies this mission crew, orbiter or operator role.Discovery Spacecraft used wikipedia · The individual mission identifies this named orbiter.nasa.gov · NASA’s individual mission page independently identifies this mission crew, orbiter or operator role.Space Shuttle program Part of program wikipedia · The individual article identifies this mission as part of the Space Shuttle program.Anik C1 Mission payload wikipedia · Named mission hardware or payload; this records a mission association, not a separate timed deployment.Leasat 3 Mission payload wikipedia · Named mission hardware or payload; this records a mission association, not a separate timed deployment.Continuous Flow Electrophoresis System III Mission payload wikipedia · Named mission hardware or payload; this records a mission association, not a separate timed deployment.American Flight Echocardiograph Mission payload wikipedia · Named mission hardware or payload; this records a mission association, not a separate timed deployment.Phase Partitioning Experiments Mission payload wikipedia · Named mission hardware or payload; this records a mission association, not a separate timed deployment.Places Launch Complex 39A, Kennedy Space Center, Florida, United States event location · venue precision · 28.6083, -80.6044 · America/New_York Launch Complex 39A, Kennedy Space Center, Florida, United States launch pad · venue precision · 28.6083, -80.6044 · America/New_York wikipedia · The mission identifies this launch/landing site. The mapped coordinates identify the named complex, not the exact wheel-contact point.nasa.gov · NASA’s mission record confirms this named launch pad or landing site.wikipedia · The location article provides the mapped complex coordinates.Relationship & place review coverage Relationships: needs review. Places: reviewed. Reviewed 2026-10-29.
Reviewed individual mission infobox, actual crew, backup and support crew sections, named payload examples, NASA primary mission clock/site record and location coordinates. Actual flight, backup and ground support roles remain distinct. No orbital or lunar event is assigned an Earth anchor. Mission-control shift rosters and the complete experiment-contributor network are not exhaustively covered. Source clock discrepancies are stated in the individual chart qualification. Coverage describes the cited sections reviewed for this record.
Sources and review Wikipedia individual event record; Individually reviewed event clock, terrestrial location and participants
Data quality
source review cleared
Library status
Reviewed public record
Source review
Reviewed source notes
Reviewed
Oct 29, 2026, 6:52 AM
Source quality
Source quality: exact documented - second precision
Wikipedia individual event record
Individually reviewed event clock, terrestrial location and participants
Source label: Wikipedia event review
Earth launch as recorded in the reviewed NASA clock source. NASA records launch 08:59:05 EST and landing 08:54:28 EST; Wikipedia’s displayed clocks agree. US daylight saving had not yet started on these dates in 1985, so the printed EST offset is preserved and independently passes the regional timezone check.
Wikipedia source page Supporting event source Shuttle Landing Facility, Kennedy Space Center, Florida, United States
landing complex · venue precision · 28.6150, -80.6945 · America/New_York
wikipedia · The mission identifies this launch/landing site. The mapped coordinates identify the named complex, not the exact wheel-contact point.nasa.gov · NASA’s mission record confirms this named launch pad or landing site.wikipedia · The location article provides the mapped complex coordinates.