SEDA-AP

Japan

SEDA-AP= Space Environment Data Acquisition Equipment - Attached Payload

Launch data:

Designation	09038
Launch date	15 July 2009
Launch site	KSC, LC39A
Launch vehicle	Space Shuttle
Mission	ISS Science, ionosphere
Destination platform	ISS
Attached date	2009
Earth orbit attached on ISS:
Perigee / Apogee	km
Inclination	°
Period	min
Earth orbit on Dec 21, 2018:
Designation	43870 / 98067PU
Perigee / Apogee	401 x 408 km
Inclination	51.6°
Period	min

SEDA-AP on ISS

Configuration of SEDA-AP

SEDA-AP. Credit: NASA

Spacecraft data:

Prime manufacturer	JAXA
Platform	Attached ISS payload
Operator	JAXA
Mass at launch	450 kg
Dry Mass	kg
Basic shape
Dimension (m)
Equipment	GSC, SSC
Solar array
Stabilization
Propulsion	None
DC power	via ISS

Description:

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.

Mission details:

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.
On 21 December 2018, 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 released on 21 December 2018 into orbit to reenter naturally.

External links:

JAXA: Payload description
JAXA: SEDA equipment
JAXA: SEDA discarded from ISS
Satellite tracking: Real time satellite tracking

Ref.: #7(JR761), #JAXA - update: 03.03.19