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United States Air ForceAtlas SLV-3C CentaurLaunch Complex 36B, Cape Canaveral SFS, FL, USA

OAO 2

Launched

December 7, 1968

Launch Successful

Image: US Air Force

Summary

OAO 2 launched on an United States Air Force Atlas SLV-3C Centaur from Launch Complex 36B, Cape Canaveral SFS, FL, USA on December 7, 1968. It was United States Air Force's 471st launch, 38th this year and humanity's 910th orbital launch attempt. It was the 5th Atlas SLV-3C Centaur flight and the 3rd this year. The payload was bound for low Earth orbit (LEO). OAO 2, one of 2 catalogued objects, reached a 773 × 788 km orbit inclined 35.0°. 2 objects from this launch are catalogued, one of them a payload.

Watch
No webcast on record.
Vehicle
Atlas SLV-3C Centaur · United States Air Force
Booster
No booster details on record.
Mission
Astrophysics · Low Earth Orbit (LEO)
Milestone
5th Atlas SLV-3C Centaur flight · 3rd this yearUnited States Air Force's 471st launch38th this yearhumanity's 910th orbital launch attempt122nd orbital launch attempt this year

Flight preview

Orbit: as tracked

35.0°Inclination
773 × 788 kmPerigee × apogeefrom mean elements
100.3 minPeriodfrom mean elements
73.6°Ascending node
21131 d agoElement epoch1968-12-07 13:31 UTC · stale

OAO 2 · NORAD 3597 · 1968-110 · Space-Track · tracking 1 of 2 objects

Show the numbers for orbit elements
Object
OAO 2
Object ID
1968-110A
Epoch
1968-12-07 13:31:20 UTC
Mean motion
14.35542914 rev/day
Eccentricity
0.0010435
Inclination
34.9632°
Ascending node
73.5894°
Arg. of perigee
263.7708°
Mean anomaly
96.1724°
Element set
999
Rev at epoch
3
B*
0

Perigee, apogee and period are Kepler figures from the catalogued mean elements, not a propagated state. Published orbit: LEO. Ascent drawn from padside's representative profile.

Catalogued objects

2 catalogued: 1 payload, 1 rocket stage; 2 still in orbit

  • OAO 2 · NORAD 3597 · in orbit

Centaur AC-16 · in orbit

Data from J. McDowell, planet4589.org

About this launch

OAO 2 (Orbiting Astronomical Observatory), also known as Stargazer, was one of a series of automated astronomical observatories that was ground controllable in orientation and was placed in a low-earth orbit.

Pad

Map of Launch Complex 36B

Launch Complex 36B, Cape Canaveral SFS, FL, USA

7th launch from Launch Complex 36B, 1st this year · 226th from Cape Canaveral SFS, FL, USA

76 launches from this pad · 1,131 from Cape Canaveral SFS, FL, USA

396 days after the previous launch from this pad

Questions

When did OAO 2 launch?

OAO 2 launched on December 7, 1968. The time is known to the hour, not the minute.

Where can I watch OAO 2?

No webcast is on record for this launch.

What rocket launched OAO 2?

Atlas SLV-3C Centaur, flown by United States Air Force. Atlas SLV-3C Centaur spec sheet

Where did OAO 2 launch from?

Launch Complex 36B, Cape Canaveral SFS, FL, USA.

What orbit did OAO 2 reach?

OAO 2, one of 2 catalogued objects, reached a 773 × 788 km orbit inclined 35.0°.

How many satellites did OAO 2 launch?

1 payload from this launch is catalogued, still in orbit (Data from J. McDowell, planet4589.org).