ArianespaceVegaAriane Launch Area 1 (ELV), Guiana Space Centre, French Guiana
THEOS-2, TRITON & others
Launched
October 9, 2023 · 01:36 UTC

Summary
THEOS-2, TRITON & others launched on an Arianespace Vega from Ariane Launch Area 1 (ELV), Guiana Space Centre, French Guiana on October 9, 2023 at 01:36 UTC. It was Arianespace's 315th launch, 3rd this year and humanity's 6,532nd orbital launch attempt. It was the 21st Vega flight and the 1st this year. The payload was bound for Sun-Synchronous Orbit (SSO). THEOS-2, one of 10 catalogued objects, reached a 610 × 612 km orbit inclined 97.9°. 10 objects from this launch are catalogued, all of them payloads.
- Watch
- Flight VV23 - 8 October – Golden Horizon | THEOS-2 & FORMOSAT-7R/TRITON | Vega Launch | Arianespacearianespace
- Vol VV23 8 octobre - “Golden Horizon” | THEOS-2 & FORMOSAT-7R/TRITON | Lancement Vega | Arianespacearianespace
- Flight VV23 – Golden Horizon | THEOS-2 & FORMOSAT-7R/TRITON | Vega Launch | Arianespacearianespace
- Vehicle
- Vega · Arianespace
- Booster
- No booster details on record.
- Mission
- Dedicated Rideshare · Sun-Synchronous Orbit (SSO)for ASA
- Milestone
- 21st Vega flight · 1st this yearArianespace's 315th launch3rd this yearhumanity's 6,532nd orbital launch attempt164th orbital launch attempt this year
Webcast
Flight preview
Orbit: as tracked
THEOS-2 · NORAD 58016 · 2023-155 · Space-Track · tracking 1 of 10 objects
Show the numbers for orbit elements
- Object
- TBA - TO BE ASSIGNED
- Object ID
- 2023-155A
- Epoch
- 2023-10-09 11:43:36 UTC
- Mean motion
- 14.8799223 rev/day
- Eccentricity
- 0.0001509
- Inclination
- 97.9312°
- Ascending node
- 351.4736°
- Arg. of perigee
- 6.6461°
- Mean anomaly
- 88.4778°
- Element set
- 999
- Rev at epoch
- 5
- 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
10 catalogued: 10 payloads; 10 still in orbit
- THEOS-2 · NORAD 58016 · in orbit
- FORMOSAT-7R · NORAD 58017 · in orbit
- ANSER FOLLOWER 2 · NORAD 58018 · in orbit
- ANSER FOLLOWER 1 · NORAD 58019 · in orbit
- N3SS · NORAD 58020 · in orbit
- CSC-2 · NORAD 58021 · in orbit
- CSC-1 · NORAD 58022 · in orbit
- PRETTY · NORAD 58023 · in orbit
- MACSAT · NORAD 58024 · in orbit
- PVCC · NORAD 58025 · in orbit
Data from J. McDowell, planet4589.org
About this launch
THEOS-2 is Thailand’s first Earth observation satellite. Built by Airbus Defense and Space and based on the Astrobus-S platform, it is designed for optical measurements with a ground resolution of approximately 1 meter. TRITON or FORMOSAT-7R is an additional satellite by NSPO added to the joint Taiwanese-US FORMOSAT 7 / COSMIC-2 constellation for collecting atmospheric data for weather prediction and for ionosphere, climate and gravity research. Its GNSS Reflectometry payload can be used to calculate the wind speed over sea surfaces. Cubesats: PROBA-V-CC (Project for On-Board Autonomy - Vegetation - Companion CubeSat) (12U) is a mission that will fly a scaled-down version of the vegetation-monitoring instrument aboard the Earth-observing PROBA-V to conduct combined experimental observations with its predecessor. PRETTY (Passive REflecTomeTry and dosimetrY) (3U) flies a GPS/Galileo signal reflectometer and radiation monitor for Graz University of Technology of Austria. MACSAT (6U) is an In-orbit demonstration (IoD) missionto demonstrate IoT communication over 5G for OQTech. CSC-1 and 2 (6U) contains 7 different experimental payloads from various institutions being flown by ISISPACE/ISL. N3SS (Nanosat 3U pour la Surveillance du Spectre) (3U) is a demonstration system for detecting and localize radio-frequency jammers on civil spectrum for the French CNES. ESTCUBE-2 is a technology demonstration mission with multiple scientific payloads for University of Tartu of Estonia. ANSER LEADER/FOLLOWER 1/2 (Advanced Nanosatellite Systems for Earth observation Research) is a cluster of 3 Earth observing cubesats with panchromatic and hyperspectral cameras for Spain's INTA for monitoring the quality of inland (reservoirs) water over the Iberian Peninsula.
Pad

Ariane Launch Area 1 (ELV), Guiana Space Centre, French Guiana
49th launch from Ariane Launch Area 1 (ELV), 1st this year · 320th from Guiana Space Centre, French Guiana
Local pad time at liftoff: Oct 8, 10:36 PM GMT-3, at night
56 launches from this pad · 336 from Guiana Space Centre, French Guiana
291 days after the previous launch from this pad
All launches from Guiana Space Centre, French GuianaOpen in maps
Updates
Successful launch
Show 9 earlier updates
Liftoff.
Cosmic_Penguin · 10/9/2023 · source
Livestream has started
LL2 · 10/9/2023 · source
Targeting October 9th at 1:36 UTC
hitura-nobad · 10/8/2023 · source
Delayed for additional checks.
Cosmic_Penguin · 10/7/2023 · source
GO for launch.
Cosmic_Penguin · 10/7/2023 · source
Scrubbed for the day.
Cosmic_Penguin · 10/7/2023 · source
Hold at T-14 seconds.
Cosmic_Penguin · 10/7/2023 · source
Tweaked T-0 to the second.
Cosmic_Penguin · 10/7/2023 · source
Livestream has started
LL2 · 10/7/2023 · source
Questions
When did THEOS-2, TRITON & others launch?
THEOS-2, TRITON & others launched on October 9, 2023 at 01:36 UTC.
Where can I watch THEOS-2, TRITON & others?
Coverage: Flight VV23 - 8 October – Golden Horizon | THEOS-2 & FORMOSAT-7R/TRITON | Vega Launch | Arianespace; Vol VV23 8 octobre - “Golden Horizon” | THEOS-2 & FORMOSAT-7R/TRITON | Lancement Vega | Arianespace; Flight VV23 – Golden Horizon | THEOS-2 & FORMOSAT-7R/TRITON | Vega Launch | Arianespace. Watch the replay
What rocket launched THEOS-2, TRITON & others?
Vega, flown by Arianespace. Vega spec sheet
Where did THEOS-2, TRITON & others launch from?
Ariane Launch Area 1 (ELV), Guiana Space Centre, French Guiana. Liftoff was Oct 8, 10:36 PM GMT-3 local time at the pad.
What orbit did THEOS-2, TRITON & others reach?
THEOS-2, one of 10 catalogued objects, reached a 610 × 612 km orbit inclined 97.9°.
How many satellites did THEOS-2, TRITON & others launch?
10 payloads from this launch are catalogued, 10 of them still in orbit (Data from J. McDowell, planet4589.org).
![[AUTO] Vega | THEOS-2, TRITON & others - image](/media?u=https%3A%2F%2Fthespacedevs-prod.nyc3.digitaloceanspaces.com%2Fmedia%2Fimages%2Fvega2520257c_image_20231009052620.jpeg&w=1600)