ArianespaceAriane 5 ECA+Ariane Launch Area 3, Guiana Space Centre, French Guiana
Syracuse 4B & Heinrich Hertz (H2Sat)
Launched
July 5, 2023 · 22:00 UTC

Image: ESA-CNES-Arianespace/Optique video du CSG/P. Piron
Summary
Syracuse 4B & Heinrich Hertz (H2Sat) launched on an Arianespace Ariane 5 ECA+ from Ariane Launch Area 3, Guiana Space Centre, French Guiana on July 5, 2023 at 22:00 UTC. The launch window ran from 22:00 to 23:05 UTC. It was Arianespace's 314th launch, 2nd this year and humanity's 6,467th orbital launch attempt. It was the 11th Ariane 5 ECA+ flight and the 2nd this year. The payload was bound for Geostationary Transfer Orbit (GTO). Heinrich-Hertz-Satellit, one of 4 catalogued objects, reached a 268 × 35,717 km orbit inclined 3.0°. 4 objects from this launch are catalogued, 2 of them payloads.
- Vehicle
- Ariane 5 ECA+ · Arianespace
- Booster
- No booster details on record.
- Mission
- Communications · Geostationary Transfer Orbit (GTO)
- Milestone
- 11th Ariane 5 ECA+ flight · 2nd this yearArianespace's 314th launch2nd this yearhumanity's 6,467th orbital launch attempt99th orbital launch attempt this year
Webcast
Flight preview
Orbit: as tracked
Heinrich-Hertz-Satellit · NORAD 57213 · 2023-093 · Space-Track · tracking 1 of 4 objects
Show the numbers for orbit elements
- Object
- TBA - TO BE ASSIGNED
- Object ID
- 2023-093A
- Epoch
- 2023-07-05 17:22:09 UTC
- Mean motion
- 2.28295825 rev/day
- Eccentricity
- 0.7275075
- Inclination
- 2.951°
- Ascending node
- 82.9334°
- Arg. of perigee
- 177.6704°
- Mean anomaly
- 190.2145°
- 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
- Heinrich-Hertz-Satellit · NORAD 57213 · in orbit
- Syracuse 4B · NORAD 57214 · in orbit
Ariane 5 L5120 ESC-D · in orbit
Data from J. McDowell, planet4589.org
About this launch
Syracuse 4B is a French military communications satellite built by Thales Alenia Space. Heinrich Hertz (H2Sat) is a small geostationary communications satellite built by OHB System and the German Aerospace Center (DLR) to explore and test new broadband communications technologies.
Related page: newsroom.arianespace.comRelated page: [Livestream] Ariane 5’s final flight (VA261)
Pad

Ariane Launch Area 3, Guiana Space Centre, French Guiana
118th launch from Ariane Launch Area 3, 2nd this year · 319th from Guiana Space Centre, French Guiana
Local pad time at liftoff: Jul 5, 7:00 PM GMT-3, in twilight
118 launches from this pad · 336 from Guiana Space Centre, French Guiana
82 days after the previous launch from this pad
All launches from Guiana Space Centre, French GuianaOpen in maps
Updates
Successful deployment and AOS confirmed for both passengers. This concludes the career of Ariane 5.
Show 9 earlier updates
Liftoff of the final Ariane 5
Nosu · 7/5/2023 · source
Livestream has started
LL2 · 7/5/2023 · source
Delayed by 1 day due to unfavorable high altitude winds
hitura-nobad · 7/4/2023 · source
New launch date and time.
Cosmic_Penguin · 6/23/2023 · source
Launch delayed due to problems with rocket ahead of rollout.
Cosmic_Penguin · 6/15/2023 · source
Tweak in T-0.
Cosmic_Penguin · 6/5/2023 · source
T-0 confirmed
Nosu · 6/5/2023 · source
Added launch window.
Cosmic_Penguin · 5/29/2023 · source
Now targeting June 16
Nosu · 4/27/2023 · source
Questions
When did Syracuse 4B & Heinrich Hertz (H2Sat) launch?
Syracuse 4B & Heinrich Hertz (H2Sat) launched on July 5, 2023 at 22:00 UTC. The launch window ran from 22:00 to 23:05 UTC.
Where can I watch Syracuse 4B & Heinrich Hertz (H2Sat)?
Coverage: Flight VA261 | Heinrich-Hertz-Satellit & SYRACUSE 4B | Ariane 5 | Arianespace. Watch the replay
What rocket launched Syracuse 4B & Heinrich Hertz (H2Sat)?
Ariane 5 ECA+, flown by Arianespace. Ariane 5 ECA+ spec sheet
Where did Syracuse 4B & Heinrich Hertz (H2Sat) launch from?
Ariane Launch Area 3, Guiana Space Centre, French Guiana. Liftoff was Jul 5, 7:00 PM GMT-3 local time at the pad.
What orbit did Syracuse 4B & Heinrich Hertz (H2Sat) reach?
Heinrich-Hertz-Satellit, one of 4 catalogued objects, reached a 268 × 35,717 km orbit inclined 3.0°.
How many satellites did Syracuse 4B & Heinrich Hertz (H2Sat) launch?
2 payloads from this launch are catalogued, 2 of them still in orbit (Data from J. McDowell, planet4589.org).
