United States Air ForceScout A-1Space Launch Complex 5, Vandenberg SFB, CA, USA
Transit-O 20
Launched
October 30, 1973
Summary
Transit-O 20 launched on an United States Air Force Scout A-1 from Space Launch Complex 5, Vandenberg SFB, CA, USA on October 30, 1973. It was United States Air Force's 607th launch, 16th this year and humanity's 1,510th orbital launch attempt. It was the 1st Scout A-1 flight. The payload was bound for Polar Orbit (PO). The tracked orbit of NNS 30200-16, one of 5 catalogued objects, from November 1, 1973, was 903 × 1,153 km inclined 90.2°. 5 objects from this launch are catalogued, one of them a payload.
- Watch
- No webcast on record.
- Vehicle
- Scout A-1 · United States Air Force
- Booster
- No booster details on record.
- Mission
- Navigation · Polar Orbit (PO)
- Milestone
- 1st Scout A-1 flightUnited States Air Force's 607th launch16th this yearhumanity's 1,510th orbital launch attempt88th orbital launch attempt this year
Flight preview
Orbit: as tracked
NNS 30200-16 · NORAD 6909 · 1973-081 · Space-Track · tracking 1 of 5 objects
Show the numbers for orbit elements
- Object
- NNSS 20 (TRANSIT 20)
- Object ID
- 1973-081A
- Epoch
- 1973-11-01 13:37:11 UTC
- Mean motion
- 13.64086819 rev/day
- Eccentricity
- 0.0169062
- Inclination
- 90.1872°
- Ascending node
- 108.1594°
- Arg. of perigee
- 321.8213°
- Mean anomaly
- 37.1078°
- Element set
- 999
- Rev at epoch
- 35
- B*
- 0
Perigee, apogee and period are Kepler figures from the catalogued mean elements, not a propagated state. Published orbit: PO.
Catalogued objects
5 catalogued: 1 payload, 1 rocket stage, 1 debris, 2 components; 5 still in orbit
- NNS 30200-16 · NORAD 6909 · in orbit
Scout S178C Stage 4 · in orbit
Data from J. McDowell, planet4589.org
About this launch
The Transit-O series of satellites that closely followed the design of Transit 5C-1 were also called “Oscars” (Oscar is the phonetic alphabet for “O”, i. e., operational). They were also called NNS (Navy Navigation Satellite) or shortened NavSat.
Pad
Space Launch Complex 5, Vandenberg SFB, CA, USA
43rd launch from Space Launch Complex 5, 1st this year · 405th from Vandenberg SFB, CA, USA
69 launches from this pad · 919 from Vandenberg SFB, CA, USA
317 days after the previous launch from this pad
Questions
When did Transit-O 20 launch?
Transit-O 20 launched on October 30, 1973. The time is known to the hour, not the minute.
Where can I watch Transit-O 20?
No webcast is on record for this launch.
What rocket launched Transit-O 20?
Scout A-1, flown by United States Air Force. Scout A-1 spec sheet
Where did Transit-O 20 launch from?
Space Launch Complex 5, Vandenberg SFB, CA, USA.
What orbit did Transit-O 20 reach?
The tracked orbit of NNS 30200-16, one of 5 catalogued objects, from November 1, 1973, was 903 × 1,153 km inclined 90.2°.
How many satellites did Transit-O 20 launch?
1 payload from this launch is catalogued, still in orbit (Data from J. McDowell, planet4589.org).