![]() Canadarm2 grapples the S.S. Gene Cernan | |
Mission type | ISS logistics |
---|---|
Operator | Orbital ATK |
COSPAR ID | 2017-071A |
SATCAT no. | 43006 ![]() |
Mission duration | 36 days, 34 minutes |
Spacecraft properties | |
Spacecraft | S.S. Gene Cernan |
Spacecraft type | Enhanced Cygnus [1] [2] |
Manufacturer |
|
Launch mass | 6,172 kg (13,607 lb) [3] |
Start of mission | |
Launch date | 12 November 2017, 12:19:51 UTC (7:19:51 am EST) [4] |
Rocket | Antares 230 [2] [5] [6] |
Launch site | MARS, Pad 0A |
End of mission | |
Disposal | Deorbited |
Decay date | 18 December 2017, 12:54 UTC [7] |
Orbital parameters | |
Reference system | Geocentric orbit |
Regime | Low Earth orbit |
Inclination | 51.66° |
Berthing at ISS | |
Berthing port | Unity nadir |
RMS capture | 14 November 2017, 10:04 UTC [8] |
Berthing date | 14 November 2017, 12:15 UTC [8] |
Unberthing date | 5 December 2017, 17:52 UTC |
RMS release | 6 December 2017, 13:11 UTC [9] |
Time berthed | 21 days, 5 hours, 37 minutes |
Cargo | |
Mass | 3,338 kg (7,359 lb) [10] |
Pressurised | 3,229 kg (7,119 lb) |
Unpressurised | 109 kg (240 lb) |
![]() NASA insignia |
OA-8E was the ninth flight of the Orbital ATK uncrewed resupply spacecraft Cygnus and its eighth flight to the International Space Station (ISS) under the Commercial Resupply Services (CRS-1) contract with NASA. The mission launched on 12 November 2017 at 12:19:51 UTC. Orbital and NASA jointly developed a new space transportation system to provide commercial cargo resupply services to the International Space Station (ISS). Under the Commercial Orbital Transportation System (COTS) program, then Orbital Sciences designed and built Antares, a medium-class launch vehicle; Cygnus, an advanced maneuvering spacecraft, and a Pressurized Cargo Module which is provided by Orbital's industrial partner Thales Alenia Space. [11]
The COTS demonstration mission was successfully conducted in September 2013, and Orbital commenced operational ISS cargo missions under the Commercial Resupply Service (CRS) program with two missions in 2014. Regrettably, the third operational mission, CRS Orb-3, was not successful due to spectacular Antares failure during launch. The company decided to discontinue the Antares 100 series and accelerate the introduction of a new propulsion system. The Antares system has been upgraded with newly built RD-181 first-stage engines to provide greater payload performance and increased reliability. [5]
In the meantime, the company had contracted with United Launch Alliance for an Atlas V launch of CRS OA-4 in late 2015 from Cape Canaveral, Florida and with a second Atlas V Cygnus launch in 2016. [5] [6] The company had planned Cygnus missions for the first (CRS OA-5), second (CRS OA-6) and fourth quarters (Cygnus OA-7) of 2016. Two of these flew on the new Antares 230 and one on the aforementioned second Atlas V. These three missions enabled Orbital ATK to cover their initial CRS contracted payload obligation. [6] This particular mission, is known as OA-8E, is part of an extension program that will enable NASA to cover the ISS resupply needs until the Commercial Resupply Services-2 (CRS-2) contract enters in effect. It is called OA-8E rather than OA-8, because the switch to a mix of Atlas V and the more powerful Antares 230 enabled the company to cover its original contract with just 7 flights, even counting the Orb-3 failure, and thus the E indicates that it actually is an extension above the originally contracted payload transport. [12]
Production and integration of Cygnus spacecraft is performed in Dulles, Virginia. The Cygnus service module is mated with the pressurized cargo module at the launch site, and mission operations are conducted from control centers in Dulles, Virginia and Houston, Texas. [11]
The launch was previously scheduled for 10 November 2017 at 13:03 UTC before being moved to 11 November 2017 at 12:37:24 UTC. The 11 November 2017 launch attempt resulted in a twenty-four hour recycle due to a plane flying into the restricted area with less than a minute into the count. The Antares rocket launched the 8th Cygnus cargo vehicle on Sunday 12 November 2017 at 12:19:51 UTC.
This was the eighth of ten flights by Orbital ATK under the Commercial Resupply Services contract with NASA, and is considered an extension over the originally contracted flights. This was the fifth flight of the enhanced-sized Cygnus PCM. [6]
In an Orbital ATK tradition, this Cygnus spacecraft was named the S.S. Gene Cernan after one of NASA's Apollo astronauts, Apollo 17 commander Eugene Cernan (1934-2017), the last man (as of 2020) to walk on the Moon and one of only three humans to visit the Moon (in orbit or on the surface) twice. [13]
Total cargo mass: 3,338 kg (7,359 lb) [10]
Antares, known during early development as Taurus II, is an expendable launch system developed by Orbital Sciences Corporation and the Pivdenne Design Bureau to launch the Cygnus spacecraft to the International Space Station as part of NASA's COTS and CRS programs. Able to launch payloads heavier than 8,000 kg (18,000 lb) into low Earth orbit, Antares is the largest rocket operated by Northrop Grumman. Antares launches from the Mid-Atlantic Regional Spaceport and made its inaugural flight on April 21, 2013. Antares 100 was retired in 2014 and series 200 was retired in 2023 due to component unavailability. As of January 2024 Antares 300 is under development.
Cygnus is an expendable American cargo spacecraft used for International Space Station (ISS) logistics missions. Cygnus was developed by Orbital Sciences Corporation, partially funded by NASA under the agency's Commercial Orbital Transportation Services (COTS) program. To create Cygnus, Orbital paired the Multi-Purpose Logistics Module, built by Thales Alenia Space and previously used by the Space Shuttle for ISS logistics, with a service module based on Orbital's GEOStar, a satellite bus. After a successful demonstration flight in 2013, Orbital was chosen to receive a Commercial Resupply Services (CRS) contract. A larger Enhanced Cygnus was introduced in 2015. Orbital Sciences was renamed Orbital ATK in 2015 and Northrop Grumman purchased Orbital in 2018 and has continued to operate Cygnus missions.
Commercial Resupply Services (CRS) are a series of flights awarded by NASA for the delivery of cargo and supplies to the International Space Station (ISS) on commercially operated spacecraft. The first CRS contracts were signed in 2008 and awarded $1.6 billion to SpaceX for twelve cargo Dragon and $1.9 billion to Orbital Sciences for eight Cygnus flights, covering deliveries to 2016. The Falcon 9 and Antares rockets were also developed under the CRS program to deliver cargo spacecraft to the ISS.
Orbital-2, also known as Orb-2, was the third flight of the Orbital Sciences' uncrewed resupply spacecraft Cygnus, its third flight to the International Space Station, and the fourth launch of the company's Antares launch vehicle. The mission launched from the Mid-Atlantic Regional Spaceport (MARS) on 13 July 2014 at 16:52:14 UTC.
Nanoracks LLC is a private in-space services company which builds space hardware and in-space repurposing tools. The company also facilitates experiments and launches of CubeSats to Low Earth Orbit.
OA-4, previously known as Orbital-4, was the fourth successful flight of the Orbital ATK uncrewed resupply spacecraft Cygnus and its third flight to the International Space Station (ISS) under the Commercial Resupply Services (CRS-1) contract with NASA. With the Antares launch vehicle undergoing a redesign following its failure during the Orb-3 launch, OA-4 was launched by an Atlas V launch vehicle. Following three launch delays due to inclement weather beginning on 3 December 2015, OA-4 was launched at 21:44:57 UTC on 6 December 2015. With a liftoff weight of 7,492 kg (16,517 lb), 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 International Space Station. Deorbit occurred on 20 February 2016 at approximately 16:00 UTC.
OA-5, previously known as Orbital-5, was the seventh planned flight of the Orbital Sciences' uncrewed resupply spacecraft Cygnus and its sixth flight to the International Space Station under the Commercial Resupply Services contract with NASA. The mission launched on 17 October 2016 at 23:45:36 UTC. Orbital Sciences and NASA jointly developed a new space transportation system to provide commercial cargo resupply services to the International Space Station (ISS). Under the Commercial Orbital Transportation System (COTS) program, Orbital designed and built Antares, a medium-class launch vehicle; Cygnus, an advanced maneuvering spacecraft; and a Pressurized Cargo Module which is provided by Orbital's industrial partner Thales Alenia Space.
OA-6, previously known as Orbital-6, is the sixth flight of the Orbital ATK uncrewed resupply spacecraft Cygnus and its fifth flight to the International Space Station under the Commercial Resupply Services (CRS) contract with NASA. The mission launched on 23 March 2016 at 03:05:52 UTC.
OA-7, previously known as Orbital-7, is the eighth flight of the Orbital ATK uncrewed resupply spacecraft Cygnus and its seventh flight to the International Space Station (ISS) under the Commercial Resupply Services contract with NASA. The mission launched on 18 April 2017 at 15:11:26 UTC. Orbital and NASA jointly developed a new space transportation system to provide commercial cargo resupply services to the International Space Station (ISS). Under the Commercial Orbital Transportation Services (COTS) program, then Orbital Sciences designed and built Antares, a medium-class launch vehicle; Cygnus, an advanced maneuvering spacecraft, and a Pressurized Cargo Module which is provided by Orbital's industrial partner Thales Alenia Space.
OA-9E was the tenth flight of the Cygnus, an uncrewed resupply spacecraft. The flight was launched by Orbital ATK (OA), which was purchased by Northrop Grumman during the mission. It was the ninth flight under the Commercial Resupply Services (CRS) contract with NASA and conducted under an extension, leading to the "E" in the mission name. The mission launched on 21 May 2018 at 08:44:06 UTC.
NG-10, previously known as OA-10E, is the eleventh flight of the Northrop Grumman uncrewed resupply spacecraft Cygnus and its tenth flight to the International Space Station under the Commercial Resupply Services (CRS-1) contract with NASA. The mission launched on 17 November 2018, at 09:01:31 UTC. This particular mission is part of an extension of the initial CRS contract that enables NASA to cover the ISS resupply needs until the Commercial Resupply Services-2 (CRS-2) contract enters in effect.
NG-11, previously known as OA-11, is the twelfth flight of the Northrop Grumman robotic resupply spacecraft Cygnus and its eleventh flight to the International Space Station under the Commercial Resupply Services (CRS-1) contract with NASA. The mission launched on 17 April 2019 at 20:46:07 UTC. This is the last mission from the extended CRS-1 contract; follow-up missions are part of the CRS-2 contract. Cygnus NG-11 was also the first mission to load critical hardware onto Cygnus within the last 24 hours prior to launch, a new Antares feature.
NG-12, previously known as OA-12, was the thirteenth flight of the Northrop Grumman robotic resupply spacecraft Cygnus and its twelfth Commercial Resupply Services flight to the International Space Station (ISS) for NASA. The mission launched on 2 November 2019 at 13:59:47 UTC). This was the first launch of Cygnus under the Commercial Resupply Services 2 (CRS-2) contract.
NG-13, previously known as OA-13, was the fourteenth flight of the Northrop Grumman robotic resupply spacecraft Cygnus and its thirteenth flight to the International Space Station (ISS) under the Commercial Resupply Services (CRS-1) contract with NASA. The mission launched on 15 February 2020 at 20:21:01 UTC after nearly a week of delays. This is the second launch of Cygnus under the CRS-2 contract.
NG-15, previously known as OA-15, was the fifteenth launch of the Northrop Grumman robotic resupply spacecraft Cygnus and its fourteenth flight to the International Space Station (ISS) under the Commercial Resupply Services (CRS) contract with NASA. The mission launched on 20 February 2021 at 17:36:50 UTC. This is the fourth launch of Cygnus under the CRS-2 contract.
NG-16, previously known as OA-16, was the sixteenth flight of the Northrop Grumman robotic resupply spacecraft Cygnus and its fifteenth flight to the International Space Station (ISS) under the Commercial Resupply Services (CRS-2) contract with NASA. The mission was launched on 10 August 2021 at 22:01:05 UTC, for a (planned) 90-day mission at the ISS. This was the fifth launch of Cygnus under the CRS-2 contract.
NG-17, previously known as OA-17, was the seventeenth flight of the Northrop Grumman robotic resupply spacecraft Cygnus and its sixteenth flight to the International Space Station (ISS) under the Commercial Resupply Services (CRS) contract with NASA. The mission launched on 19 February 2022 at 17:40:03 UTC. It was the sixth launch of Cygnus under the CRS-2 contract.
NG-18 was the eighteenth flight of the Northrop Grumman robotic resupply spacecraft Cygnus and its seventeenth flight to the International Space Station (ISS) under the Commercial Resupply Services (CRS-2) contract with NASA. The mission successfully launched on 7 November 2022 at 10:32:42 UTC. This was the seventh launch of Cygnus under the CRS-2 contract.
NG-19 was the nineteenth flight of the Northrop Grumman robotic resupply spacecraft Cygnus and its eighteenth flight to the International Space Station (ISS) under the Commercial Resupply Services (CRS-2) contract with NASA. The mission launched on 2 August 2023 at 00:31:14 UTC. This was the eighth launch of Cygnus under the CRS-2 contract.