Cygnus CRS Orb-1
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Cygnus arriving at the ISS, 12 January 2014
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| Mission type | ISS resupply |
|---|---|
| Operator | Orbital Sciences |
| COSPAR ID | 2014-003A |
| SATCAT no. | 39502 |
| Mission duration | 41 days, 12 minutes |
| Spacecraft properties | |
| Spacecraft | Cygnus 2 |
| Spacecraft type | Standard Cygnus |
| Manufacturer | Orbital Sciences Thales Alenia Space |
| Payload mass | 1,261 kg (2,780 lb) |
| Start of mission | |
| Launch date | 9 January 2014, 18:07:05 UTC |
| Rocket | Antares 120 |
| Launch site | MARS LP-0A |
| Contractor | Orbital Sciences |
| End of mission | |
| Disposal | Deorbited |
| Decay date | 19 February 2014, 18:20 UTC |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Low Earth |
| Perigee | 406 km (252 mi) |
| Apogee | 415 km (258 mi) |
| Inclination | 51.6 degrees |
| Period | 92.77 minutes |
| Epoch | 11 January 2014 |
| Berthing at International Space Station | |
| Berthing port | Harmony nadir |
| RMS capture | 12 January 2014, 11:08 UTC |
| Berthing date | 12 January 2014, 13:05 UTC |
| Unberthing date | 18 February 2014, 10:25 UTC |
| RMS release | 18 February 2014, 11:41 UTC |
| Time berthed | 36 days, 21 hours, 20 minutes |
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NASA Orb-1 mission patch
Cygnus CRS Orb-1, also known as Orbital-1, was the second flight of the Orbital Sciences Cygnus unmanned resupply spacecraft, its second flight to the International Space Station and the third launch of the company's Antares launch vehicle.
Orb-1 was the first of eight contracted flights by Orbital Sciences under NASA's Commercial Resupply Services program. This was the maiden flight of the Castor 30B second stage.
Orbital Sciences continued its naming of Cygnus spacecraft in tribute to former astronauts. This vehicle was named the C. Gordon Fullerton for the NASA astronaut who died on 21 August 2013.
The launch of Orb-1 was scheduled for November 2013, but a series of delays pushed the date to 20 December UTC. The Antares launch vehicle rolled out from the Wallops Horizontal Integration Facility (HIF) on the morning of 17 December, and was later erected at Launch Pad 0A. Later that day, due to the need for a series of spacewalks to fix a faulty coolant system on the space station, NASA directed Orbital to stand down the Antares rocket. Antares was rolled back to the HIF and time-sensitive cargo removed. The launch date was rescheduled for no earlier than 13 January 2014, but was later moved forward to 7 January after a scheduling conflict at Wallops was resolved. The launch was delayed one day due to cold temperatures at the launch site.
NASA Wallops and Orbital Sciences announced the launch attempt on 8 January 2014 was scrubbed due to "an unusually high level of space radiation that exceeded by a considerable margin the constraints imposed on the mission to ensure the rocket's electronic systems are not impacted by a harsh radiation environment." Orbital later revised this, stating that a more extensive review of the radiation environment found it to be "within acceptable limits" of the Antares program, and that a launch would be attempted on 9 January.
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