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: 84 Failures: 15 Pending: 17

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

Related News

SpaceDaily

Proba-3 mission closes gap in inner solar corona monitoring

Berlin, Germany (SPX) Dec 19, 2025 Proba-3 has spent its first year in orbit generating more than 50 artificial solar eclipses, giving scientists sustained access to the inner solar corona that previously could only be studied intermi…

ESA

Proba-3 fills the solar observation gap

It has been a busy year for the European Space Agency’s Proba-3 mission. The satellite duo has already created more than 50 artificial solar eclipses in orbit since the mission operations began less than a year ago. The resulting data conf…

ESA

Proba-3's first autonomous formation flight

Two spacecraft flying as one – that is the goal of European Space Agency’s Proba-3 mission. Earlier this week, the eclipse-maker moved a step closer to achieving that goal, as both spacecraft aligned with the Sun, maintaining their relativ…

ESA

First autonomous formation flight of double satellite Proba-3

Two spacecraft flying as one – that is the goal of European Space Agency’s Proba-3 mission. Earlier this week, the eclipse-maker moved a step closer to achieving that goal, as both spacecraft aligned with the Sun, maintaining their relativ…

ESA

Close-up of Proba-3’s Coronagraph, ready to dance

From the ESA Blogs.

Satish Dhawan Space Centre, India

Satish Dhawan Space Centre First Launch Pad


Falcon 9
Success
1 day, 14 hours ago
NROL-105
Space Launch Complex 4E - Vandenberg SFB, CA, USA

Twelfth batch of satellites for a reconnaissance satellite constellation built by SpaceX and Northrop Grumman for the National Reconnaissance Office …


Ceres-2
Failure
1 day, 15 hours ago
Demo Flight
Launch Area 95A - Jiuquan Satellite Launch Center, People's Republic of China

First test launch of Galactic Energy’s Ceres-2 rocket.


Long March 3B/E
Failure
2 days, 2 hours ago
Shijian 32
Launch Complex 2 (LC-2) - Xichang Satellite Launch Center, People's Republic of China

Chinese experimental spacecraft of unknown purposes.


Ceres-1S
Success
2 days, 23 hours ago
Tianqi 37-40
Rizhao offshore launch location - Haiyang Oriental Spaceport

4 small satellites for LEO Internet of Things (IoT) communication purposes.


Long March 2C
Success
3 days, 15 hours ago
AlSat 3A
Launch Area 94 (SLS-2 / 603) - Jiuquan Satellite Launch Center, People's Republic of China

Earth observation satellite built by China's CAST for the Algerian Space Agency.


Falcon 9
Success
4 days, 1 hour ago
Starlink Group 6-98
Space Launch Complex 40 - Cape Canaveral SFS, FL, USA

A batch of 29 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.


Long March 8A
Success
5 days, 3 hours ago
SatNet LEO Group 18
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.…


Long March 6A
Success
5 days, 5 hours ago
Yaogan 50-01
Launch Complex 9A - Taiyuan Satellite Launch Center, People's Republic of China

The Yaogan 50-01 is a Chinese military “remote sensing” satellite of unknown purposes.


Falcon 9
Success
5 days, 22 hours ago
Starlink Group 6-97
Space Launch Complex 40 - Cape Canaveral SFS, FL, USA

A batch of 29 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.


PSLV-DL
Failure
6 days, 14 hours ago
EOS-N1 and others
Satish Dhawan Space Centre First Launch Pad - Satish Dhawan Space Centre, India

Small Earth observation satellite from NewSpace India Limited (NSIL) for an "Indian strategic user", details TBD. This launch will also carry 18 o…