United States Air ForceThor Delta NSpace Launch Complex 2E, Vandenberg SFB, CA, USA
TD-1A
Launched
March 12, 1972
Image: NASA
Summary
TD-1A launched on an United States Air Force Thor Delta N from Space Launch Complex 2E, Vandenberg SFB, CA, USA on March 12, 1972. It was United States Air Force's 571st launch, 7th this year and humanity's 1,322nd orbital launch attempt. It was the 6th Thor Delta N flight and the 1st this year. The payload was bound for Polar Orbit (PO). TD-1A, one of 5 catalogued objects, reached a 533 × 553 km orbit inclined 97.6°. 5 objects from this launch are catalogued, one of them a payload.
- Watch
- No webcast on record.
- Vehicle
- Thor Delta N · United States Air Force
- Booster
- No booster details on record.
- Mission
- Astrophysics · Polar Orbit (PO)
- Milestone
- 6th Thor Delta N flight · 1st this yearUnited States Air Force's 571st launch7th this yearhumanity's 1,322nd orbital launch attempt16th orbital launch attempt this year
Flight preview
Orbit: as tracked
TD-1A · NORAD 5879 · 1972-014 · Space-Track · tracking 1 of 5 objects
Show the numbers for orbit elements
- Object
- TD 1A
- Object ID
- 1972-014A
- Epoch
- 1972-03-12 04:31:02 UTC
- Mean motion
- 15.10101644 rev/day
- Eccentricity
- 0.0014439
- Inclination
- 97.5554°
- Ascending node
- 253.9411°
- Arg. of perigee
- 323.4975°
- Mean anomaly
- 36.5215°
- Element set
- 999
- Rev at epoch
- 2
- B*
- 0
Perigee, apogee and period are Kepler figures from the catalogued mean elements, not a propagated state. Published orbit: PO. Ascent drawn from padside's representative profile.
Catalogued objects
5 catalogued: 1 payload, 1 rocket stage, 3 components; none still in orbit
- TD-1A · NORAD 5879 · re-entered January 9, 1980
Delta 88 · re-entered October 9, 1980
Data from J. McDowell, planet4589.org
About this launch
European astrophysical research satellite.
Pad

Space Launch Complex 2E, Vandenberg SFB, CA, USA
47th launch from Space Launch Complex 2E, 2nd this year · 379th from Vandenberg SFB, CA, USA
47 launches from this pad · 919 from Vandenberg SFB, CA, USA
40 days after the previous launch from this pad
Questions
When did TD-1A launch?
TD-1A launched on March 12, 1972. The time is known to the hour, not the minute.
Where can I watch TD-1A?
No webcast is on record for this launch.
What rocket launched TD-1A?
Thor Delta N, flown by United States Air Force. Thor Delta N spec sheet
Where did TD-1A launch from?
Space Launch Complex 2E, Vandenberg SFB, CA, USA.
What orbit did TD-1A reach?
TD-1A, one of 5 catalogued objects, reached a 533 × 553 km orbit inclined 97.6°.
How many satellites did TD-1A launch?
1 payload from this launch is catalogued, no longer in orbit (Data from J. McDowell, planet4589.org).
