United States Air ForceScout G-1Space Launch Complex 5, Vandenberg SFB, CA, USA
MACSAT 1 & 2
Launched
May 9, 1990
Summary
MACSAT 1 & 2 launched on an United States Air Force Scout G-1 from Space Launch Complex 5, Vandenberg SFB, CA, USA on May 9, 1990. It was United States Air Force's 882nd launch, 6th this year and humanity's 3,521st orbital launch attempt. It was the 12th Scout G-1 flight and the 1st this year. The payload was bound for Polar Orbit (PO). MACSAT 1, one of 11 catalogued objects, reached a 619 × 776 km orbit inclined 89.9°. 11 objects from this launch are catalogued, 2 of them payloads.
- Watch
- No webcast on record.
- Vehicle
- Scout G-1 · United States Air Force
- Booster
- No booster details on record.
- Mission
- Communications · Polar Orbit (PO)
- Milestone
- 12th Scout G-1 flight · 1st this yearUnited States Air Force's 882nd launch6th this yearhumanity's 3,521st orbital launch attempt45th orbital launch attempt this year
Flight preview
Orbit: as tracked
MACSAT 1 · NORAD 20607 · 1990-043 · Space-Track · tracking 1 of 11 objects
Show the numbers for orbit elements
- Object
- MACSAT 1 (M 1)
- Object ID
- 1990-043A
- Epoch
- 1990-05-10 01:27:34 UTC
- Mean motion
- 14.60735745 rev/day
- Eccentricity
- 0.0111023
- Inclination
- 89.8953°
- Ascending node
- 195.2334°
- Arg. of perigee
- 279.73°
- Mean anomaly
- 79.1513°
- Element set
- 999
- Rev at epoch
- 5
- 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
11 catalogued: 2 payloads, 1 rocket stage, 8 components; 2 still in orbit
- MACSAT 1 · NORAD 20607 · in orbit
- MACSAT 2 · NORAD 20608 · in orbit
Scout S212C Stage 4 · re-entered November 29, 2023
Data from J. McDowell, planet4589.org
About this launch
Experimental communications satellites for the US military
Pad

Space Launch Complex 5, Vandenberg SFB, CA, USA
64th launch from Space Launch Complex 5, 1st this year · 543rd from Vandenberg SFB, CA, USA
69 launches from this pad · 919 from Vandenberg SFB, CA, USA
622 days after the previous launch from this pad
Questions
When did MACSAT 1 & 2 launch?
MACSAT 1 & 2 launched on May 9, 1990. The time is known to the hour, not the minute.
Where can I watch MACSAT 1 & 2?
No webcast is on record for this launch.
What rocket launched MACSAT 1 & 2?
Scout G-1, flown by United States Air Force. Scout G-1 spec sheet
Where did MACSAT 1 & 2 launch from?
Space Launch Complex 5, Vandenberg SFB, CA, USA.
What orbit did MACSAT 1 & 2 reach?
MACSAT 1, one of 11 catalogued objects, reached a 619 × 776 km orbit inclined 89.9°.
How many satellites did MACSAT 1 & 2 launch?
2 payloads from this launch are catalogued, 2 of them still in orbit (Data from J. McDowell, planet4589.org).