SEDA-AP

SEDA-AP [NASA]

JAXA's SEDA-AP (Space Environment Data Acquisition Equipment - Attached Payload) was an International Space Station (ISS) based payload to observe and predict the space weather.

SEDA-AP measured space environment (neutrons, plasma, heavy ions, high-energy light particles, atomic oxyen, cosmic dust) In the ISS orbit and environmental effects on materials and electronic devices.

Instruments on board of SEDA-AP were:

• AOM (Atmospheric Oxygen Monitor)
• EDEE (Electronic Device Evaluation Equipment)
• HIT/PLAM (heavy Ion Telescope / Plasma Monitor)
• MPAC & SEED (Micro Particle Capturer and Space-Environment Exposure Device)
• NEM-E (Neutron Monitor Sensor)
• NEM-S (Neutron Monitor Sensor)
• PLAM-S (Plasma Monitor)
• SDOM (Standard Dose Monitor)

SEDA-AP was launched with JEM-EF on Space Shuttle mission Endeavour F23 (STS-127) to the ISS on 15 July 2009, where it was installed on the JEM-EF.

SEDA-AP was removed from the JEM-EF to be deorbited in the trunk of Dragon CRS-16, but as the mast could not be retracted, it was eventually released on 21 December 2018 into orbit to reenter naturally.