WMO OSCAR | Satellite: Sentinel-3A

Satellite: Sentinel-3A

Satellite details

Acronym	Sentinel-3A
Full name	Sentinel-3A
Satellite Description	1st flight unit of the Sentinel-3 programme. Main mission: ocean and land observation. Substantial contribution to Solid Earth (topography).
Mass at launch	1250 kg	Dry mass	1150 kg
Power	2300 W
Data access link	https://navigator.eumetsat.int/search?query=sentinel-3A
Data access information	Description of data services at https://www.eumetsat.int/website/home/Satellites/CurrentSatellites/Sentinel3/index.html Product delivery timeliness may be: Near-Real-Time (NRT): < 3 h from sensing Short Time Critical (STC): < 48 h from sensing Non-Time Critical (NTC): < 1 month from sensing. NRT Marine products are distributed by EUMETSAT by EUMETCast and via the Copernicus Online Data Access.
Orbit	Sunsynchronous orbit	Altitude	814.5 km
ECT	10:00 desc

Space agency	ESA , EC, EUMETSAT
Status	Operational
Details on Status (as available)	Sentinel-3A operations were transferred from ESA to EUMETSAT on 13 July 2016.
Launch	16 Feb 2016	EOL	≥2023
Last update:	2020-08-21

Associated satellite programme and related satellites

Note: red tag: no longer operational , green tag: operational , blue tag : future

Sentinel-3
- Sentinel-3A (2016 - 2023)
- Sentinel-3B (2018 - 2025)
- Sentinel-3C (2024 - 2031)
- Sentinel-3D (2028 - 2035)

Satellite Payload

All known Instruments flying on Sentinel-3A

Acronym	Full name
DORIS	Doppler Orbitography and Radiopositioning Integrated by Satellite
GPS	GPS Receiver
LRR	Laser Retro-Reflector
MWR	Micro-Wave Radiometer
OLCI	Ocean and Land Colour Imager
SLSTR	Sea and Land Surface Temperature Radiometer
SRAL	Synthetic aperture Radar Altimeter

Satellite payload

All known instruments flying on Sentinel-3A

Instrument	Full name	Start date	EOL date	Status	NRT data	Instrument landing page
DORIS	Doppler Orbitography and Radiopositioning Integrated by Satellite	13 Jul 2016	≥2023 *	Active	Yes	earth.esa.int
GPS	GPS Receiver	13 Jul 2016	≥2023 *	Active	Yes	earth.esa.int
LRR	Laser Retro-Reflector	13 Jul 2016	≥2023 *	Active	Yes	earth.esa.int
MWR	Micro-Wave Radiometer	13 Jul 2016	≥2023 *	Active	Yes	earth.esa.int
OLCI	Ocean and Land Colour Imager	13 Jul 2016	≥2023 *	Active	Yes	earth.esa.int
SLSTR	Sea and Land Surface Temperature Radiometer	13 Jul 2016	≥2023 *	Active	Yes	earth.esa.int
SRAL	Synthetic aperture Radar Altimeter	13 Jul 2016	≥2023 *	Active	Yes	earth.esa.int

* The information in this field is estimated or assumed

Telecommunication frequency or microwave sensing channel information Show expert details

Service	Dir or Mode	Frequency	Emission designator	Bandwidth	Polarisation	D/A	Data rate or Baseband	Comments
Raw Data	S-E	8095 MHz	140MG1D	140000 kHz	RHCP	D	260000/280000 kbps	Raw data downlink
Raw Data	S-E	8260 MHz	140MG1D	140000 kHz	RHCP	D	260000/280000 kbps	Raw data downlink
DORIS	E-S	401.25 MHz	23K0G1D	23 kHz	RHCP	D	4 kbps	Precise positioning by DORIS
DORIS	E-S	2036.25 MHz	95K0G1D	95 kHz	RHCP	D	4 kbps	Precise positioning by DORIS
TC	E-S	2075.65 MHz	768KG2D	768 kHz	RHCP	D	64 kbps	Telecommands
TM	S-E	2254.1 MHz	2M20G1D	2200 kHz	RHCP	D	2000 kbps	High Data Rate Telemetry
SRAL	active	5410 MHz		320000.0 kHz	-	A		C-band radar altimeter
SRAL	active	13575 MHz		350000.0 kHz	-	A		Ku-band radar altimeter
MWR	passive	23800 MHz		400000.0 kHz	-	A		Water vapour channel (supporting altimeter)
MWR	passive	36500 MHz		1000000.0 kHz	-	A		Window channel (supporting altimeter)