PROBA

Last updated
PROBA-1
NamesPROBA, PROBA-1
Mission typeExperimental, Earth Observation
Operator ESA
COSPAR ID 2001-049B OOjs UI icon edit-ltr-progressive.svg
SATCAT no. 26958
Website Proba-1 applications
Mission durationElapsed: 23 years, 3 months, 28 days
Spacecraft properties
Bus PROBA
Manufacturer QinetiQ Space (previously Verhaert Space)
Launch mass94 kg (207 lb)
Dry mass94 kg (207 lb)
Dimensions0.6 m × 0.6 m × 0.8 m (2 ft 0 in × 2 ft 0 in × 2 ft 7 in)
Power90 W
Start of mission
Launch date04:53,22 October 2001(UTC) (2001-10-22T04:53Z)
Rocket PSLV C3
Launch site Sriharikota FLP
Contractor ISRO
Orbital parameters
Reference system Geocentric
Regime Sun-synchronous
Eccentricity 0.008866
Perigee altitude 553 km (344 mi)
Apogee altitude 677 km (421 mi)
Inclination 97.9 degrees
Period 97 minutes
Epoch 22 October 2001 00:53:00 UTC

PROBA (Project for On-Board Autonomy), renamed PROBA-1, is a Belgian satellite technology demonstration mission launched atop an Indian Polar Satellite Launch Vehicle by ISRO on 22 October 2001. [1] [2] The satellite was funded through the ESA's MicroSat and General Study Program with the objective of addressing issues regarding on-board operational autonomy of a generic satellite platform. [3] [4] This small (60×60×80 cm; 95 kg) boxlike system, with solar panel collectors on its surface, hosts two Earth Observation instruments dubbed CHRIS and HRC. CHRIS is a hyperspectral system (200 narrow bands) that images at 17 m resolution, while HRC is a monochromatic camera that images visible light at 5 m resolution. [5]

Contents

With an initial lifetime of one to two years, the satellite celebrated its 20th year of operations in 2021. [5] On 9 March 2018, it surpassed ERS-2 as ESA's longest operated Earth observation mission of all time. [6] ESA aims to deorbit the satellite through the ClearSpace-1 mission in 2026. [7]

Series of satellites

PROBA is also the name of the series of satellites starting with PROBA-1. The name is also used to refer to the bus of the satellites.

The second satellite in the PROBA series, PROBA-2, was launched on 2 November 2009 together with the SMOS satellite.

The third satellite to be launched was PROBA-V (PROBA-Vegetation), on 7 May 2013.

The fourth satelite in the program is the formation flying demonstration mission PROBA-3 launched on 5 December 2024. [8]

Further planned satellites in the PROBA series include the limb sounder ALTIUS.

See also

References

  1. ↑ Ramakrishnan, S.; Somanath, S.; Balakrishnan, S. S. (January 2002). "Multi-Orbit Mission by PSLV-C3 and Future Launch Opportunities". IAF Abstracts: 936. Bibcode:2002iaf..confE.936R.
  2. ↑ "PSLV-C3". ISRO. 22 October 2001. Archived from the original on 25 March 2014. Retrieved 25 October 2021.
  3. ↑ "PROBA-1 - Overview". ESA. 11 December 2012. Retrieved 25 October 2021.
  4. ↑ "PROBA-1 (Project for On-Board Autonomy - 1)". www.eoportal.org. Retrieved 2022-12-28.
  5. 1 2 "Proba-1 Celebrates 20th Birthday In Orbit". ESA. 22 October 2021. Retrieved 25 October 2021.
  6. ↑ "Proba-1 sets new record". ESA. 8 March 2018. Retrieved 11 March 2018.
  7. ↑ Werner, Debra (24 April 2024). "Major changes approved for ClearSpace-1 mission". SpaceNews . Retrieved 24 April 2024.
  8. ↑ "Eclipse-making double satellite Proba-3 enters orbit". www.esa.int. Retrieved 2025-02-19.


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