Sea LaunchZenit 3SLLaunch Platform Odyssey, Sea Launch
Intelsat 21
Launched
August 19, 2012
Summary
Intelsat 21 launched on a Sea Launch Zenit 3SL from Launch Platform Odyssey, Sea Launch on August 19, 2012. It was Sea Launch's 38th launch, 2nd this year and humanity's 5,237th orbital launch attempt. It was the 33rd Zenit 3SL flight and the 2nd this year. The payload was bound for Geostationary Transfer Orbit (GTO). Intelsat IS-21, one of 2 catalogued objects, reached a 464 × 35,592 km orbit inclined 0.2°. 2 objects from this launch are catalogued, one of them a payload.
- Watch
- No webcast on record.
- Vehicle
- Zenit 3SL · Sea Launch
- Booster
- No booster details on record.
- Mission
- Communications · Geostationary Transfer Orbit (GTO)
- Milestone
- 33rd Zenit 3SL flight · 2nd this yearSea Launch's 38th launch2nd this yearhumanity's 5,237th orbital launch attempt47th orbital launch attempt this year
Flight preview
Orbit: as tracked
Intelsat IS-21 · NORAD 38749 · 2012-045 · Space-Track · tracking 1 of 2 objects
Show the numbers for orbit elements
- Object
- TBA - TO BE ASSIGNED
- Object ID
- 2012-045A
- Epoch
- 2012-08-19 07:18:21 UTC
- Mean motion
- 2.2779132 rev/day
- Eccentricity
- 0.7198556
- Inclination
- 0.2263°
- Ascending node
- 316.6637°
- Arg. of perigee
- 10.8796°
- Mean anomaly
- 4.5225°
- 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: GTO. Ascent drawn from padside's representative profile.
Catalogued objects
2 catalogued: 1 payload, 1 rocket stage; 2 still in orbit
- Intelsat IS-21 · NORAD 38749 · in orbit
Blok DM-SL No. 33L · in orbit
Data from J. McDowell, planet4589.org
About this launch
Intelsat 21 is a Boeing 702MP communications satellite carrying C- and Ku-band transponders to serve the Americas, Europe and Africa from 58° West, replacing Intelsat 9.
Pad
Launch Platform Odyssey, Sea Launch
33rd launch from Launch Platform Odyssey, 2nd this year · 36th from Sea Launch
36 launches from this pad · 40 from Sea Launch
79 days after the previous launch from this pad
Questions
When did Intelsat 21 launch?
Intelsat 21 launched on August 19, 2012. The time is known to the hour, not the minute.
Where can I watch Intelsat 21?
No webcast is on record for this launch.
What rocket launched Intelsat 21?
Zenit 3SL, flown by Sea Launch. Zenit 3SL spec sheet
Where did Intelsat 21 launch from?
Launch Platform Odyssey, Sea Launch.
What orbit did Intelsat 21 reach?
Intelsat IS-21, one of 2 catalogued objects, reached a 464 × 35,592 km orbit inclined 0.2°.
How many satellites did Intelsat 21 launch?
1 payload from this launch is catalogued, still in orbit (Data from J. McDowell, planet4589.org).