Quasar-12 (USA-137) (NROL-5)

Launch Success

Liftoff Time (GMT)

18:37:00

Thursday January 29, 1998

Watch Replay

24/7 Coverage

Mission Details

Quasar-12 (USA-137) (NROL-5)

Wiki

The second-generation Quasar satellites, also known as SDS-2, continue the legacy of the Satellite Data System (SDS) developed by the United States Air Force. Serving as communication relays, these satellites transmit real-time data from US reconnaissance satellites and support communication needs for USAF aircraft and ground stations. Operating in similar elliptical orbits for polar coverage, they maintain communication with KH-11 satellites using a 60 GHz frequency payload. Launched after the first-generation satellites, the SDS-2 series likely incorporates advancements in technology and may feature enhancements in capabilities such as improved data transmission rates or additional onboard systems.

Molniya Orbit

1 Payload

Rocket

Retired
Atlas IIA

Active 1992 to 2002

Lockheed Martin logo

Agency

Lockheed

Rocket

Height: 47.5m

Payload to Orbit

LEO: 7,316 kg

GTO: 3,180 kg

Liftoff Thrust

2,479 Kilonewtons

Stages

2

Launch Site

SLC-36A

Cape Canaveral SFS, Florida, USA

Fastest Turnaround

46 days 2 hours

Stats

Atlas II


34th

Mission

1st

Mission of 1998

1998


6th

Orbital launch attempt