ULA Cygnus CRS Orb-4 (S.S. Deke Slayton II) Atlas V 401
Rocket Launch Video Stream
About the Cygnus CRS Orb-4 (S.S. Deke Slayton II) Mission
| Type | Resupply |
|---|---|
| Orbit | Low Earth Orbit |
| Launch Cost | $115,000,000 |
This is the 4th mission under NASA's Commercial Resupply Service agreement with Orbital ATK. The unmanned Cygnus cargo vessel delievered approximately 3,500 kg (7,700 lbs.) of supplies and science experiments to the International Space Station. The craft features a longer, enhanced cargo module and remained berthed to the station for 2 months.
Launch Pad & Location
Space Launch Complex 41
Cape Canaveral SFS, FL, USA
| Launches | 125 |
|---|---|
| Orbital Launch Attempts | 125 |
| Total Launches | 1130 |
Cape Canaveral Space Force Station (CCSFS) is an installation of the United States Space Force's Space Launch Delta 45, located on Cape Canaveral in Brevard County, Florida.
ULA Atlas V 401 Rocket
An Atlas V with a 4 meter diameter fairing, no boosters and a single centaur upper stage engine.
| Length | 58.3 m |
|---|---|
| Diameter | 3.8 m |
| Stages | 2 |
| Launch Mass | 590.0 T |
| Takeoff Thrust | 3,827.0 kN |
| Apogee | 40,000.0 km |
| LEO Capacity | 9,050 kg |
| GTO Capacity | 4,950 kg |
| SSO Capacity | 6,670 kg |
| Launch Cost | $115,000,000 |
| Maiden Flight | 8/21/2002 |
Mission Spacecraft
Cygnus CRS OA-4
Cygnus CRS OA-4 was the spacecraft used for this mission. It is a Northrop Grumman Cargo Resupply designed for Cargo Earth Orbit Logistics and traveled to International Space Station.
Cygnus CRS OA-4, also known as Orbital ATK CRS-4 and CRS Orb-4, was the fourth successful flight of the Orbital ATK uncrewed resupply spacecraft Cygnus and its third flight to the International Space Station under the Commercial Resupply Services contract with NASA. With the Antares rocket undergoing a redesign following its failure during the Orb-3 launch, OA-4 was launched by an Atlas V rocket. Following three launch delays due to inclement weather beginning on 3 December 2015, OA-4 was launched at 21:44 UTC on 6 December 2015. With a liftoff weight of 7,492 kilograms, OA-4 became the heaviest payload ever launched on an Atlas V. The spacecraft rendezvoused with and was berthed to the ISS on 9 December 2015. It was released on 19 February 2016 after 72 days at the station. Deorbit occurred on 20 February at approximately 16:00 UTC. The Cygnus spacecraft is launched aboard Antares, Atlas V, or Falcon 9 to deliver cargo to the ISS under NASAs CRS contracts. It has no heatshield so at the end of its mission its used to dispose of waste by burning up in the Earths atmosphere. 1 week to 2 years design life.
| Type | Cargo Resupply |
|---|---|
| Agency | Northrop Grumman |
| Status | Single Use |
| Destination | International Space Station |
| Maiden Flight | 12/6/2015 |
| Mission End | 2/20/2016 |
| Flights | 1 |
| Human Rated | No |
| Height | 6.3 m |
| Diameter | 3.1 m |
| Payload Capacity | 3,750 kg |
About ULA
United Launch Alliance (ULA) is a joint venture of Lockheed Martin Space Systems and Boeing Defense, Space & Security. ULA was formed in December 2006 by combining the teams at these companies which provide spacecraft launch services to the government of the United States. ULA launches from both coasts of the US. They launch their Atlas V vehicle from LC-41 in Cape Canaveral and LC-3E at Vandeberg. Their Delta IV launches from LC-37 at Cape Canaveral and LC-6 at Vandenberg.
| Total Launches | 175 |
|---|---|
| Successful | 175 |
| Pending | 73 |
| Consecutive Success | 175 |
Frequently Asked Questions
When was the ULA Atlas V 401 Cygnus CRS Orb-4 (S.S. Deke Slayton II) launch scheduled?
The ULA Atlas V 401 Cygnus CRS Orb-4 (S.S. Deke Slayton II) launch was scheduled for:
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Where can I watch the ULA Atlas V 401 Cygnus CRS Orb-4 (S.S. Deke Slayton II) launch video?
You can watch the ULA Atlas V 401 launch video on this page. The official video includes full mission coverage with multiple camera angles, onboard views, and expert commentary covering pre-launch procedures, liftoff, stage separation, and payload deployment.
Where did the ULA Atlas V 401 Cygnus CRS Orb-4 (S.S. Deke Slayton II) mission launch from?
The ULA Atlas V 401 rocket launched from Space Launch Complex 41 at Cape Canaveral SFS, FL, USA. Cape Canaveral Space Force Station (CCSFS) is an installation of the United States Space Force's Space Launch Delta 45, located on Cape Canaveral in Brevard County, Florida.
What rocket was used for the Cygnus CRS Orb-4 (S.S. Deke Slayton II) mission?
The Cygnus CRS Orb-4 (S.S. Deke Slayton II) mission launched aboard a ULA Atlas V 401 rocket. An Atlas V with a 4 meter diameter fairing, no boosters and a single centaur upper stage engine. Detailed rocket specifications and performance data are available in the rocket details above.
What weather conditions could have delayed the ULA Atlas V 401 Cygnus CRS Orb-4 (S.S. Deke Slayton II) launch?
The ULA Atlas V 401 Cygnus CRS Orb-4 (S.S. Deke Slayton II) launch could have been delayed by various weather conditions including lightning within 10 nautical miles, high winds (especially upper-level winds), thick cloud layers, precipitation, and poor visibility. Weather must be favorable at the launch site, downrange landing zones, and abort landing sites.
How can I get updates if the ULA Atlas V 401 Cygnus CRS Orb-4 (S.S. Deke Slayton II) launch was delayed?
This page was updated in real-time with the latest ULA Atlas V 401 launch status, including any delays or scrubs for the Cygnus CRS Orb-4 (S.S. Deke Slayton II) mission. You can also check our space launch schedule for historical launch information. Our mobile app provides push notifications for instant alerts about launch status changes. Official ULA live streams provided the most immediate range updates during the launch window.
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