ArianespaceAriane 5 ECAAriane Launch Area 3, Guiana Space Centre, French Guiana
Intelsat 37e & BSAT-4a
Launched
September 29, 2017
Image: ESA/CNES/Arianespace/Optique vidéo du CSG
Summary
Intelsat 37e & BSAT-4a launched on an Arianespace Ariane 5 ECA from Ariane Launch Area 3, Guiana Space Centre, French Guiana on September 29, 2017. It was Arianespace's 260th launch, 9th this year and humanity's 5,678th orbital launch attempt. It was the 64th Ariane 5 ECA flight and the 5th this year. The payload was bound for Geostationary Transfer Orbit (GTO). Intelsat IS-37e, one of 4 catalogued objects, reached a 270 × 35,645 km orbit inclined 6.0°. 4 objects from this launch are catalogued, 2 of them payloads.
- Watch
- Vehicle
- Ariane 5 ECA · Arianespace
- Booster
- No booster details on record.
- Mission
- Communications · Geostationary Transfer Orbit (GTO)
- Milestone
- 64th Ariane 5 ECA flight · 5th this yearArianespace's 260th launch9th this yearhumanity's 5,678th orbital launch attempt63rd orbital launch attempt this year
Webcast
Flight preview
Orbit: as tracked
Intelsat IS-37e · NORAD 42950 · 2017-059 · Space-Track · tracking 1 of 4 objects
Show the numbers for orbit elements
- Object
- TBA - TO BE ASSIGNED
- Object ID
- 2017-059A
- Epoch
- 2017-09-30 03:40:48 UTC
- Mean motion
- 2.2878809 rev/day
- Eccentricity
- 0.7270192
- Inclination
- 5.9521°
- Ascending node
- 164.9865°
- Arg. of perigee
- 178.1566°
- Mean anomaly
- 186.3793°
- Element set
- 999
- Rev at epoch
- 0
- B*
- 0.025583
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
4 catalogued: 2 payloads, 1 rocket stage, 1 component; 3 still in orbit
- Intelsat IS-37e · NORAD 42950 · in orbit
- BSAT-4a · NORAD 42951 · in orbit
Ariane 5 L5100 ESC-A · in orbit
Data from J. McDowell, planet4589.org
About this launch
Intelsat 37e is a geostationary communications satellite for Intelsat, another one of the EpicNG series. It weighs about 6700 kg and is equipped with C-band, Ku-band and Ka-band transopnders. Intelsat 37e is a replacement for the Intelsat 901 spacecraft in the 18° W orbital slot, covering Europe, Africa, South America and North America. BSAT-4a is a geostationary communications satellite for the Japanese satellite operator B-SAT. Satellite is equipped with 24 Ku transponders and weighs about 3500 kg. It is to reside in 110° East orbital position, providing high-resolution direct television broadcasting to Japan.
Pad

Ariane Launch Area 3, Guiana Space Centre, French Guiana
96th launch from Ariane Launch Area 3, 6th this year · 275th from Guiana Space Centre, French Guiana
118 launches from this pad · 336 from Guiana Space Centre, French Guiana
93 days after the previous launch from this pad
All launches from Guiana Space Centre, French GuianaOpen in maps
Questions
When did Intelsat 37e & BSAT-4a launch?
Intelsat 37e & BSAT-4a launched on September 29, 2017. The time is known to the hour, not the minute.
Where can I watch Intelsat 37e & BSAT-4a?
Coverage: VA239 - 09/29/2017; Arianespace Vol VA239 / Intelsat 37e et BSAT-4a (VF); Flight VA239 – Intelsat 37e and BSAT-4a | Ariane 5 Launch | Arianespace. Watch the replay
What rocket launched Intelsat 37e & BSAT-4a?
Ariane 5 ECA, flown by Arianespace. Ariane 5 ECA spec sheet
Where did Intelsat 37e & BSAT-4a launch from?
Ariane Launch Area 3, Guiana Space Centre, French Guiana.
What orbit did Intelsat 37e & BSAT-4a reach?
Intelsat IS-37e, one of 4 catalogued objects, reached a 270 × 35,645 km orbit inclined 6.0°.
How many satellites did Intelsat 37e & BSAT-4a launch?
2 payloads from this launch are catalogued, 2 of them still in orbit (Data from J. McDowell, planet4589.org).
