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JISS
ISS 1
ISS 1
Credit: Manufacturer Image
Japanese earth ionosphere satellite. JISS - national name "Ume". Spin-stabilized; Ionospheric Sounder, Radio Noise Receiver, Plasma Measuring Equipment, Ion Mass Spectrometer, and other instruments.

AKA: Japanese Ionosphere Sounding Satellite. Status: Operational 1976. First Launch: 1976-02-29. Last Launch: 1978-02-16. Number: 2 . Gross mass: 141 kg (310 lb). Height: 3.90 m (12.70 ft).

The satellites were intended for regular observation of global distribution of critical frequencies of the ionosphere, and for utilization of the results of the observation for radio wave forecasts and warning necessary for effective operation of short-wave radio-communication. Shape: cylindrical, 3.9m diameter and 0.8m height. Expected life: probability of survival in 1.5 years was more than 70 percent.


More at: ISS-A.

Family: Earth, Ionosphere sat, Medium earth orbit. Country: Japan. Launch Vehicles: Thor, Delta, N-1. Launch Sites: Tanegashima, Tanegashima N. Agency: NASDA. Bibliography: 2, 279, 6, 12704.

1976 February 29 - . 03:30 GMT - . Launch Site: Tanegashima. Launch Complex: Tanegashima N. LV Family: Thor. Launch Vehicle: N-1.
  • ISS 1 - . Payload: ISS a. Mass: 139 kg (306 lb). Nation: Japan. Agency: NASDA. Class: Earth. Type: Ionosphere satellite. Spacecraft: JISS. USAF Sat Cat: 8709 . COSPAR: 1976-019A. Apogee: 1,003 km (623 mi). Perigee: 988 km (613 mi). Inclination: 69.7000 deg. Period: 105.00 min.

    Ionospheric sounding. Japanese Ionospheric Sounding Satellite (JISS - national name 'Ume') is intended for regular observations by means of radio waves of the global distribution of the critical frequencies of the ionosphere, and for utilization of the results of the observati on for radio wave forecasts and warning necessary for effective operation of short-wave radio-communication. Time of launch 0330UT.


1978 February 16 - . 04:00 GMT - . Launch Site: Tanegashima. Launch Complex: Tanegashima N. LV Family: Thor. Launch Vehicle: N-1.
  • ISS 2 - . Payload: ISS b. Mass: 140 kg (300 lb). Nation: Japan. Agency: NASDA. Class: Earth. Type: Ionosphere satellite. Spacecraft: JISS. USAF Sat Cat: 10674 . COSPAR: 1978-018A. Apogee: 1,216 km (755 mi). Perigee: 973 km (604 mi). Inclination: 69.4000 deg. Period: 107.20 min.

    Ionospheric sounding. Ionosphere Sounding Satellite-b . Launch time 0400 UT. Launch vehicle: N number 4. Spin-stabilized; Ionospheric Sounder, Radio Noise Receiver, Plasma Measuring Equipment, Ion Mass Spectrometer, and so on. The satellite is intended for regular observation of global distribution of critical frequencies of the ionosphere by means of radio waves. Weight about 141 kg. Shape: cylindrical, 3.9m diameter and 0.8m height. Expected life: probability of survival in 1.5 years is more than 70 percent.



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