ArianespaceAriane 5 ECAAriane Launch Area 3, Guiana Space Centre, French Guiana
DSN 1 & HYLAS 4
Launched
April 5, 2018 · 21:34 UTC
Image: ESA/CNES/Arianespace/Optique vidéo du CSG
Summary
DSN 1 & HYLAS 4 launched on an Arianespace Ariane 5 ECA from Ariane Launch Area 3, Guiana Space Centre, French Guiana on April 5, 2018 at 21:34 UTC. It was Arianespace's 265th launch, 3rd this year and humanity's 5,739th orbital launch attempt. It was the 66th Ariane 5 ECA flight and the 2nd this year. The payload was bound for Geostationary Transfer Orbit (GTO). Kirameki 1, one of 4 catalogued objects, reached a 264 × 35,754 km orbit inclined 3.0°. 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
- 66th Ariane 5 ECA flight · 2nd this yearArianespace's 265th launch3rd this yearhumanity's 5,739th orbital launch attempt33rd orbital launch attempt this year
Webcast
Flight preview
Orbit: as tracked
Kirameki 1 · NORAD 43271 · 2018-033 · Space-Track · tracking 1 of 4 objects
Show the numbers for orbit elements
- Object
- TBA - TO BE ASSIGNED
- Object ID
- 2018-033A
- Epoch
- 2018-04-05 23:39:28 UTC
- Mean motion
- 2.28061466 rev/day
- Eccentricity
- 0.7278358
- Inclination
- 2.9988°
- Ascending node
- 346.2478°
- Arg. of perigee
- 177.565°
- Mean anomaly
- 60.6525°
- 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
4 catalogued: 2 payloads, 1 rocket stage, 1 component; 4 still in orbit
- Kirameki 1 · NORAD 43271 · in orbit
- Hylas 4 · NORAD 43272 · in orbit
Ariane 5 L5102 ESC-A · in orbit
Data from J. McDowell, planet4589.org
About this launch
DSN-1 (also known as Kirameki 1, Superbird 8 or Superbird B3) is Japanese X-band military communications satellite. It was planned to be launched in 2016, however the satellite was damaged during transport to the launch site and repairs delayed the launch. The satellite is to replace aging Superbird-B2 satellite at 162° East in geostationary orbit. HYLAS 4 is a communications satellite build by Orbital ATK for Avanti Communication. It features hybrid propulsion system, with traditional chemical thrusters for orbit raising and ion engines for stationkeeping. The satellite carries 66 high-throughput Ka-band beams and will provide services to regions of Africa and Europe.
Pad

Ariane Launch Area 3, Guiana Space Centre, French Guiana
99th launch from Ariane Launch Area 3, 2nd this year · 280th from Guiana Space Centre, French Guiana
Local pad time at liftoff: Apr 5, 6:34 PM GMT-3, in daylight
118 launches from this pad · 336 from Guiana Space Centre, French Guiana
69 days after the previous launch from this pad
All launches from Guiana Space Centre, French GuianaOpen in maps
Questions
When did DSN 1 & HYLAS 4 launch?
DSN 1 & HYLAS 4 launched on April 5, 2018 at 21:34 UTC.
Where can I watch DSN 1 & HYLAS 4?
Coverage: Arianespace Vol VA242 - HYLAS 4 et DSN-1/Superbird-8 (FR); Flight VA242 – HYLAS 4 / DSN-1/Superbird-8 | Ariane 5 Launch | Arianespace; Décollage du Vol Ariane 242 depuis le Centre spatial guyanais.. Watch the replay
What rocket launched DSN 1 & HYLAS 4?
Ariane 5 ECA, flown by Arianespace. Ariane 5 ECA spec sheet
Where did DSN 1 & HYLAS 4 launch from?
Ariane Launch Area 3, Guiana Space Centre, French Guiana. Liftoff was Apr 5, 6:34 PM GMT-3 local time at the pad.
What orbit did DSN 1 & HYLAS 4 reach?
Kirameki 1, one of 4 catalogued objects, reached a 264 × 35,754 km orbit inclined 3.0°.
How many satellites did DSN 1 & HYLAS 4 launch?
2 payloads from this launch are catalogued, 2 of them still in orbit (Data from J. McDowell, planet4589.org).
