GFZ arranged a rideshare of GRACE-FO on a Falcon 9 with Iridium following the cancellation of their Dnepr launch contract in 2015. Iridium CEO Matt Desch disclosed in September 2017 that GRACE-FO would be launched on the sixth Iridium NEXT mission. The booster reuse turnaround was a record 4.5 months between flights.
Payloads
Iridium NEXT 6

Type:

Satellite

Mass:

4,300 kg

Inclination Degree:

86.4486°

Customers:

Iridium Communications

Manufacturers:

Thales Alenia Space

Nationalities:

United States

GRACE-FO 1-2

Type:

Satellite

Mass:

1,160 kg

Inclination Degree:

88.9912°

Customers:

NASA, DLR

Mission Images