Satellites end up in 'unusable' orbit
India’s small satellite launch vehicle made a spectacular debut launch on Sunday, but the mission fell short of overall success when two satellites were inserted into the incorrect orbit, rendering them space junk.
The SSLV was developed to carry payloads of up to 500 kg to low earth orbits on an “on-demand basis”. India hopes the craft will let its space agency target commercial launches. Although it is capable of achieving 500 km orbits, SSLV's Saunday payload was an 135 kg earth observation satellite called EOS-2 and student-designed 8 kg 8U cubesat AzaadiSAT. Both were intended for a 356 km orbit at an inclination of about 37 degrees.Indian Space Research Organisation identified the root cause of the failure Sunday night: a failure of logic to identify a sensor failure during the rocket stage.
SSLV-D1/EOS-02 Mission update: SSLV-D1 placed the satellites into 356 km x 76 km elliptical orbit instead of 356 km circular orbit. Satellites are no longer usable. Issue is reasonably identified. Failure of a logic to identify a sensor failure and go for a salvage action
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