United States Air ForceThor Delta ESpace Launch Complex 2E, Vandenberg SFB, CA, USA
ESSA 4
Launched
January 26, 1967
Image: NASA
Summary
ESSA 4 launched on an United States Air Force Thor Delta E from Space Launch Complex 2E, Vandenberg SFB, CA, USA on January 26, 1967. It was United States Air Force's 376th launch, 4th this year and humanity's 654th orbital launch attempt. It was the 5th Thor Delta E flight and the 1st this year. The payload was bound for Sun-Synchronous Orbit (SSO). ESSA 4, one of 5 catalogued objects, reached a 1,358 × 1,422 km orbit inclined 101.9°. 5 objects from this launch are catalogued, one of them a payload.
- Watch
- No webcast on record.
- Vehicle
- Thor Delta E · United States Air Force
- Booster
- No booster details on record.
- Mission
- Earth Science · Sun-Synchronous Orbit (SSO)
- Milestone
- 5th Thor Delta E flight · 1st this yearUnited States Air Force's 376th launch4th this yearhumanity's 654th orbital launch attempt6th orbital launch attempt this year
Flight preview
Orbit: as tracked
ESSA 4 · NORAD 2657 · 1967-006 · Space-Track · tracking 1 of 5 objects
Show the numbers for orbit elements
- Object
- ESSA 4 (TOS-B)
- Object ID
- 1967-006A
- Epoch
- 1967-01-26 22:34:20 UTC
- Mean motion
- 12.69783805 rev/day
- Eccentricity
- 0.0041448
- Inclination
- 101.9187°
- Ascending node
- 85.0736°
- Arg. of perigee
- 54.6703°
- Mean anomaly
- 305.7473°
- 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: SSO. Ascent drawn from padside's representative profile.
Catalogued objects
5 catalogued: 1 payload, 1 rocket stage, 3 components; 5 still in orbit
- ESSA 4 · NORAD 2657 · in orbit
Delta 45 Stage 3 · in orbit
Data from J. McDowell, planet4589.org
About this launch
The ESSA series was the second generation of US meterological satellites after the TIROS (Television & Infra-Red Observation Satellite) series. They were also called OT (Operational TIROS), TOS (TIROS Operational Satellite).
Pad
Space Launch Complex 2E, Vandenberg SFB, CA, USA
29th launch from Space Launch Complex 2E, 1st this year · 247th from Vandenberg SFB, CA, USA
47 launches from this pad · 919 from Vandenberg SFB, CA, USA
116 days after the previous launch from this pad
Questions
When did ESSA 4 launch?
ESSA 4 launched on January 26, 1967. The time is known to the hour, not the minute.
Where can I watch ESSA 4?
No webcast is on record for this launch.
What rocket launched ESSA 4?
Thor Delta E, flown by United States Air Force. Thor Delta E spec sheet
Where did ESSA 4 launch from?
Space Launch Complex 2E, Vandenberg SFB, CA, USA.
What orbit did ESSA 4 reach?
ESSA 4, one of 5 catalogued objects, reached a 1,358 × 1,422 km orbit inclined 101.9°.
How many satellites did ESSA 4 launch?
1 payload from this launch is catalogued, still in orbit (Data from J. McDowell, planet4589.org).