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astronautix.com Ofeq 1-2


Class: Technology. Nation: Israel. Agency: Israel Space Agency. Manufacturer: ISA/MBT.

Ofeq, meaning 'Horizon', was a demonstration satellite developed by IAI (Israel Aircraft Industries) for ISA (Israel Space Agency). Israel became the eighth nation to launch an indigenous satellite when Ofeq 1 was placed into LEO. The full payload was not disclosed but included magnetometers and house-keeping monitoring. The only malfunction was in telemetry memory; computer switched to backup. Expected life was a few weeks but did not re-enter until January 14 because of higher than expected orbit. Function: 1) Experimentation in generation of solar power; 2) Experimentation in transmission reception from space; 3) Verification of system's ability to withstand vacuum and weightless conditions; 4) Data collection on space environment conditions and Earth's magnetic field. Spacecraft: An irregular octagonal prism of conventional aluminum. Mass budget (kg): structure 33, power system 58, computer 7, comms 12, thermal control 5, wiring 9, instrumentation & balance masses 32. Spin stabilised at 400 deg/sec, the 16 solar panels provided 246 W through a 7 Ah NiCd battery; typical consumption was 53 W. S-band telemetry returned at 2.5 kbit/s from a 128 kbyte memory. Attitude sensing provided by 3-axis rate gyro, magnetometer and Sun sensor. Payload: Classified except for magnetometers and housekeeping monitoring.


Specification

Design Life: weeks - months. Total Length: 2.3 m. Maximum Diameter: 1.2 m. Total Mass: 157 kg.


Ofeq 1-2 Chronology


19 September 1988 Ofeq 1 Program: Offeq. Launch Site: Palmachim . Launch Vehicle: Shavit. Mass: 155 kg. Perigee: 250 km. Apogee: 1,149 km. Inclination: 142.9 deg.

First Israeli launch; possibly experimental surveillance mission. Experimental satellite 'Offeq-1'. Launch time 0934 GMT. Location: site on the coast south of Tel-Aviv. Launching organization: Israel Aircraft Industries, Ltd (IAI) and Israeli Space Agency (ISA). Function: 1) Experimentation in generation of solar power; 2) Experimentation in transmission reception from space; 3) Verification of system's ability to withstand vacuum and weightless conditions; 4) Data collection on space environment conditions and Earth's magnetic field.


03 April 1990 Ofeq 2 Program: Offeq. Launch Site: Palmachim . Launch Vehicle: Shavit. Mass: 160 kg. Perigee: 149 km. Apogee: 251 km. Inclination: 143.2 deg.

Communication experiments.


15 September 1994 Ofeq Program: Offeq. Launch Site: Palmachim . Launch Vehicle: Shavit. FAILURE: Failure not acknowledged.

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Last update 12 March 2001.
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