TD-1A (Thor-Delta 1A), ESRO’s first astronomical satellite, carrying ultraviolet, X-ray, and gamma-ray instruments for a full-sky stellar survey. Thor Delta N from Vandenberg SLC-2E lofted the craft into polar LEO on 12 March 1972 (final Delta N flight); it catalogued ~15,000 UV sources.
- Outcome
- Success
- Orbit
- PO
- Polar orbit
- Payload to orbit
- 475 kg
- Flight
- 6th
- of 6 Thor Delta N flights
- Date and time
- 12 March 1972, 01:55 UTC
- Rocket
- Thor Delta N
- Builder
- McDonnell Douglas
- Launch site
- Space Launch Complex 2E, Vandenberg SFB, CA, USA
- Payload
- Astrophysics
- International designator
- 1972-014
- Launches in 1972
- 15th of 113
See it in orbit
Space Atlas shows the satellites and rocket stages from this launch in 3D.
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