WMO OSCAR | Satellite: ESSA-4

Satellite: ESSA-4

Satellite details

Acronym	ESSA-4
Full name	Environmental Science and Services Administration - 4
Satellite Description	4th flight unit of the TOS programme. Main mission: cloud imagery.
Mass at launch	285 kg	Dry mass
Power
Data access link	no link provided
Data access information	Data available in real-time to APT stations.
Orbit	Sunsynchronous orbit	Altitude	1380 km
ECT	09:30 desc

Space agency	NOAA , NASA
Status	Inactive
Details on Status (as available)
Launch	26 Jan 1967	EOL	05 May 1968
Last update:	2015-07-27

Associated satellite programme and related satellites

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

TIROS Operational System
- ESSA-1 (1966 - 1967)
- ESSA-2 (1966 - 1970)
- ESSA-3 (1966 - 1968)
- ESSA-4 (1967 - 1968)
- ESSA-5 (1967 - 1970)
- ESSA-6 (1967 - 1969)
- ESSA-7 (1968 - 1970)
- ESSA-8 (1968 - 1976)
- ESSA-9 (1969 - 1972)

Satellite Payload

All known Instruments flying on ESSA-4

Acronym	Full name
APT	Automatic Picture Transmission

Satellite payload

All known instruments flying on ESSA-4

Instrument	Full name	Start date	EOL date	Status	NRT data	Instrument landing page	Comments
APT	Automatic Picture Transmission	Apr 1967 *	05 May 1968	N/A

* The information in this field is estimated or assumed