PROBA

PROBA-1

Names	PROBA, PROBA-1
Mission type	Experimental, Earth Observation
Operator	ESA
COSPAR ID	2001-049B
SATCAT no.	26958
Website	Proba-1 applications
Mission duration	Elapsed: 22 years, 6 months, 4 days
Spacecraft properties
Bus	PROBA
Manufacturer	QinetiQ Space (previously Verhaert Space)
Launch mass	94 kg (207 lb)
Dry mass	94 kg (207 lb)
Dimensions	0.6 m × 0.6 m × 0.8 m (2 ft 0 in × 2 ft 0 in × 2 ft 7 in)
Power	90 W
Start of mission
Launch date	04:53, 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]

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.

Further planned satellites in the PROBA series include the formation flying demonstration mission PROBA-3 and limb sounder ALTIUS.

See also

• Miniaturized satellite

References

External links

• http://earth.esa.int/proba/ Archived 2012-01-09 at the Wayback Machine
• PROBA-1 article on eoPortal by ESA
• PROBA-2 article on eoPortal by ESA
• PROBA-3 article on eoPortal by ESA
• PROBA-V article on eoPortal by ESA
• PROBA-V plus one article on eoPortal by ESA

This article about one or more spacecraft of a European multinational organisation is a stub. You can help Wikipedia by expanding it.

• v
• t
• e