| Names | PROBA, PROBA-1 |
|---|---|
| Mission type | Experimental,Earth Observation |
| Operator | ESA |
| COSPAR ID | 2001-049B |
| SATCATno. | 26958 |
| Website | Proba-1 applications |
| Mission duration | Elapsed: 24 years, 1 month, 5 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) (2001-10-22T04:53:00Z) |
| Rocket | PSLV C3 |
| Launch site | SriharikotaFLP |
| 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-2 → PROBA-2 → | |
PROBA (Project for On-Board Autonomy), renamedPROBA-1, is a Belgiansatellite technology demonstration mission launched atop an IndianPolar Satellite Launch Vehicle byISRO on 22 October 2001.[1][2] The satellite was funded through theESA'sMicroSat 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, withsolar panel collectors on its surface, hosts two Earth Observation instruments dubbed CHRIS and HRC. CHRIS is ahyperspectral system (200 narrow bands) that images at 17 m resolution, while HRC is a monochromatic camera that imagesvisible 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 surpassedERS-2 as ESA's longest operatedEarth observation mission of all time.[6] ESA aims to deorbit the satellite through theClearSpace-1 mission in 2026.[7]
"PROBA" also refers to thePROBA series of satellites starting with PROBA-1. The name is also used to refer to the bus of the satellites.
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