Minimize What is Proba-1?
Web Content Image

Proba-1 is a technology demonstrator turned operational Earth observation mission - ESA's smallest, less than a cubic metre in volume. Proba-1's main instrument is the Compact High Resolution Imaging Spectrometer (CHRIS), acquiring 13 square km scenes at 17 m spatial resolution in 18 user-selected visible and near-infrared wavelengths. This agile satellite can also deliver up to five different viewing angles. Nearly 20,000 environmental science images have been acquired.

Minimize Latest Mission Operations News
Web Content Image

Proba-1 back in operation

20 February 2015

After a short period of inactivity, Proba-1 was successfully put back in Energy mode (by ESA Redu station) on Monday 09 February 2015 at 03:10 UTC and the imaging activities were restarted on Thursday 12 February 2015.

Read more

Proba-1 - Delay in update on the ESA Online repository

10 August 2012

Technical problems have been causing a delay in the processing and delivery of PROBA data for upload on the ESA Online repository and in the EOLI-SA catalogue.  

Read more
Minimize Latest Mission Results News
Web Content Image

Shadows on ice: Proba-1 images Concordia south polar base

12 December 2012

ESA's Earth-observing microsatellite Proba-1 has glimpsed one of the loneliest places on Earth - Concordia research base in the heart of Antarctica.

Read more
Minimize Special Features
Web Content Image

Proba-1 charting Earth's radiation belts for a decade

07 November 2011

ESA's Proba-1 recently celebrated its tenth birthday in orbit. Kept busy as an Earth-observing mission, the microsatellite has also been building a detailed...

Read more
Web Content Image

Small but agile Proba-1 reaches 10 years in orbit

31 October 2011

For most Earth-observing satellites, image acquisition is only a matter of opening a viewing aperture but Proba-1 is different.

Read more
Minimize About this Mission

Proba-1

The Project for On-Board Autonomy (Proba) was originally a technology demonstration mission of the European Space Agency, started in mid-1998 and funded within the frame of ESA's General Support Technology Programme.

Intended as a one-year mission, Proba-1 has provided data successfully ever since its launch on 22 Oct 2001. Hosting two Earth Observation instruments CHRIS and HRC, Proba-1 has been managed, since 2004, by ESA's Ground Segment Department within the Directorate of Earth Observation at ESA/ESRIN.

Data

Facts and figures
Operators ESA (European Space Agency)
Date of Launch 22 October 2001
Status Operating nominally in 2015
Orbit Height 615 km
Orbit Type Sun-synchronous elliptical polar
Repeat Cycle approx. 7 days
Resolution 18 m (CHRIS)
Swath Width 14 km (CHRIS)
Onboard Sensors provided under TPM
  • CHRIS (Compact High Resolution Imaging Spectrometer)
  • HRC (High Resolution Camera)

Missions

Minimize Related Software Tools