Watch the Launch

Watch the Launch

Additional Media

About Proba-3

Proba-3 is ESA’s – and the world’s – first precision formation flying mission. A pair of satellites will fly together maintaining a fixed configuration as a ‘large rigid structure’ in space to prove formation flying technologies and rendezvous experiments.

Proba-3

Circle Image

Overview

Destination: Elliptical Orbit
Mission: Technology

Elliptical Orbit Satish Dhawan Space Centre First Launch Pad Satish Dhawan Space Centre, India

Proba-3 (Project for On-Board Autonomy 3) is the first close formation flying mission for the European Space Agency (ESA). It consists of two independent, three-axis stabilised spacecraft flying 150 meters from one another with the ability to accurately control the attitude and separation of the two craft. Such formation flying will be maintained for 6 hours, creating ″artificial solar eclipse″ for the satellite below. The spacecraft pair will fly a highly elliptical orbit divided between periods of accurate formation flying around apogee, when payload operations will be possible, and periods of free flight.

Updates

Cosmic_Penguin • Dec. 5, 2024, 11 a.m.

Spacecrafts now in contact.


Cosmic_Penguin • Dec. 5, 2024, 10:54 a.m.

Spacecraft separation.


Cosmic_Penguin • Dec. 5, 2024, 10:34 a.m.

Liftoff.


LL2 • Dec. 5, 2024, 10:11 a.m.

Official Webcast by ISRO Official has started


Cosmic_Penguin • Dec. 4, 2024, 1:17 p.m.

Tweaked new launch time.


PSLV-XL

Family:
Configuration: XL

PSLV-XL is the upgraded version of Polar Satellite Launch Vehicle in its standard configuration boosted by more powerful, stretched strap-on boosters with 12 tonne propellant load. Weighing 320t at lift-off, the vehicle uses larger strap-on motors (PSOM-XL or S12) to achieve higher payload capability. On 29 December 2005, ISRO successfully tested the improved version of strap-on booster for the PSLV. The first use of PSLV-XL was the launch of Chandrayaan-1 by PSLV C11. The payload capability for this variant is 1,800 kg to SSO.

Specifications
  • Stages
    4
  • Length
    44.0 m
  • Diameter
    2.8 m
  • Fairing Diameter
    ―
  • Launch Mass
    320.0 T
  • Thrust
    ―
Family
  • Name
    PSLV-XL
  • Family
    ―
  • Variant
    XL
  • Alias
    ―
  • Full Name
    PSLV XL
Payload Capacity
  • Launch Cost
    ―
  • Low Earth Orbit
    ―
  • Geostationary Transfer Orbit
    ―
  • Direct Geostationary
    ―
  • Sun-Synchronous Capacity
    1800.0 kg

Indian Space Research Organization

Indian Space Research Organization

(ISRO)

Chairman: V. Narayanan Founded: 1969 Successes: 85 Failures: 15 Pending: 21

Agency Type:

The Indian Space Research Organisation (ISRO) is the space agency of the Government of India headquartered in the city of Bangalore. Its vision is to "harness space technology for national development while pursuing space science research and planetary exploration."

INFO WIKI
ESA

Earth and Proba-3’s Coronagraph play hide and seek

From the ESA Blogs.

ESA

We’re back: Proba-3 ready for more science

The Proba-3 mission’s Coronagraph spacecraft and its main scientific instrument, ASPIICS, are both at full health, ready to resume routine formation flying operations and deliver more breathtaking artificial eclipses.

ESA

First Proba-3 science: surprisingly speedy solar wind

Since July 2025, the European Space Agency’s pair of Proba-3 satellites has already created 57 artificial solar eclipses. So far, the mission has collected more than 250 hours of high-resolution videos of the Sun’s atmosphere, called the c…

European Spaceflight

ESA Regains Contact With Lost Proba-3 Spacecraft

The European Space Agency has regained contact with the Coronagraph spacecraft of its Proba-3 mission after more than a month of silence. Launched aboard an ISRO PSLV-XL rocket in December 2024, the Proba-3 mission’s Coronagraph and Occult…

ESA

Proba-3’s Coronagraph is alive!

A month after an anomaly onboard the Proba-3 mission caused ground control to lose contact with the Coronagraph spacecraft, the mission team shares great news: the spacecraft has phoned home, re-establishing the lost connection.

Satish Dhawan Space Centre, India

Satish Dhawan Space Centre First Launch Pad


Long March 12
Success
3 hours, 22 minutes ago
SatNet LEO Group 27
Commercial LC-2 - Wenchang Space Launch Site, People's Republic of China

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Nuri
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NeonSat-2 to 6
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Falcon Heavy
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1 week ago
NROL-97
Launch Complex 39A - Kennedy Space Center, FL, USA

Classified payload for the US National Reconnaissance Office.


Falcon 9
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1 week, 1 day ago
Transporter 18 (Dedicated SSO Rideshare)
Space Launch Complex 4E - Vandenberg SFB, CA, USA

Dedicated rideshare flight to a sun-synchronous orbit with dozens of small microsatellites and nanosatellites for commercial and government customers.


Falcon 9
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1 week, 1 day ago
Crew-13
Space Launch Complex 40 - Cape Canaveral SFS, FL, USA

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Starship
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1 week, 4 days ago
Starlink Group 31-1 (Starship Flight 14)
Orbital Launch Pad 2 - SpaceX Starbase, TX, USA

14th test flight of the two-stage Starship launch vehicle. 3rd flight of Starship V3 and the first Starship flight to deploy satellites (a group of S…


Falcon 9
Success
1 week, 6 days ago
USSF-385
Space Launch Complex 4E - Vandenberg SFB, CA, USA

A classified mission for the United States Space Force. It is possibly a batch of classified LEO satellites based on SpaceX’s Starshield satellite bu…


Electron
Success
1 week, 6 days ago
Owlright, Owlright, Owlright (StriX Launch 13)
Rocket Lab Launch Complex 1B - Rocket Lab Launch Complex 1, Mahia Peninsula, New Zealand

Synthetic aperture radar satellite for Japanese Earth imaging company Synspective.


Long March 6A
Success
2 weeks, 1 day ago
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Launch Complex 9A - Taiyuan Satellite Launch Center, People's Republic of China

3 Chinese reconnaissance satellites of unknown purposes, officially reported as for "Electromagnetic environment probing".


Long March 8A
Success
2 weeks, 2 days ago
SatNet LEO Group 26
Commercial LC-1 - Wenchang Space Launch Site, People's Republic of China

A batch of 9 Low Earth Orbit communication satellites for the Chinese state owned SatNet constellation operated by the China Satellite Network Group.…