# SAR missions


## SENTINEL-1A

**Launch date** : April 3, 2014

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**End of life date** : Out of service since 2022

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**Agency** : ESA

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**Instrument** : C-SAR

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**Orbit characteristics** :

- Orbit type: Sun-synchronous
- Inclination: 98 degrees
- Altitude: 693 km
- Repeat cycle: 12 days


## SENTINEL-1B

**Launch date** : April 25, 2014

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**End of life date** : December 23, 2021

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**Agency** : ESA

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**Instrument** : C-SAR

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**Orbit characteristics** :

- Orbit type: Sun-synchronous
- Inclination: 98 degrees
- Altitude: 693 km
- Repeat cycle: 12 days(base)