United States Air ForceThor DM-21 AblestarSpace Launch Complex 2E, Vandenberg SFB, CA, USA
Transit-O 4
Launched
June 24, 1965
Summary
Transit-O 4 launched on an United States Air Force Thor DM-21 Ablestar from Space Launch Complex 2E, Vandenberg SFB, CA, USA on June 24, 1965. It was United States Air Force's 266th launch, 35th this year and humanity's 447th orbital launch attempt. It was the 18th Thor DM-21 Ablestar flight and the 2nd this year. The payload was bound for Polar Orbit (PO). NNS 30040, one of 15 catalogued objects, reached a 995 × 1,116 km orbit inclined 90.0°. 15 objects from this launch are catalogued, one of them a payload.
- Watch
- No webcast on record.
- Vehicle
- Thor DM-21 Ablestar · United States Air Force
- Booster
- No booster details on record.
- Mission
- Navigation · Polar Orbit (PO)
- Milestone
- 18th Thor DM-21 Ablestar flight · 2nd this yearUnited States Air Force's 266th launch35th this yearhumanity's 447th orbital launch attempt54th orbital launch attempt this year
Flight preview
Orbit: as tracked
NNS 30040 · NORAD 1420 · 1965-048 · Space-Track · tracking 1 of 15 objects
Show the numbers for orbit elements
- Object
- OPS 8480 (TRANSIT 5B-6)
- Object ID
- 1965-048A
- Epoch
- 1965-06-24 23:40:27 UTC
- Mean motion
- 13.56500317 rev/day
- Eccentricity
- 0.0081487
- Inclination
- 89.9999°
- Ascending node
- 311.8937°
- Arg. of perigee
- 290.0685°
- Mean anomaly
- 69.0655°
- Element set
- 999
- Rev at epoch
- 0
- 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
15 catalogued: 1 payload, 1 rocket stage, 10 debris, 3 components; 6 still in orbit
- NNS 30040 · NORAD 1420 · in orbit
Ablestar 019 · 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 2E, Vandenberg SFB, CA, USA
22nd launch from Space Launch Complex 2E, 2nd this year · 178th from Vandenberg SFB, CA, USA
47 launches from this pad · 919 from Vandenberg SFB, CA, USA
105 days after the previous launch from this pad
Questions
When did Transit-O 4 launch?
Transit-O 4 launched on June 24, 1965. The time is known to the hour, not the minute.
Where can I watch Transit-O 4?
No webcast is on record for this launch.
What rocket launched Transit-O 4?
Thor DM-21 Ablestar, flown by United States Air Force. Thor DM-21 Ablestar spec sheet
Where did Transit-O 4 launch from?
Space Launch Complex 2E, Vandenberg SFB, CA, USA.
What orbit did Transit-O 4 reach?
NNS 30040, one of 15 catalogued objects, reached a 995 × 1,116 km orbit inclined 90.0°.
How many satellites did Transit-O 4 launch?
1 payload from this launch is catalogued, still in orbit (Data from J. McDowell, planet4589.org).
![[AUTO] Thor DM-21 Ablestar - image](/media?u=https%3A%2F%2Fthespacedevs-prod.nyc3.digitaloceanspaces.com%2Fmedia%2Fimages%2Fthor2520dm-212520ablestar_image_20191201205131.jpg&w=1600)