paragraph_text: The Israeli Space Agency coordinates all Israeli space research programs with scientific and commercial goals. In 2012 Israel was ranked ninth in the world by the Futron's Space Competitiveness Index. Israel is one of only seven countries that both build their own satellites and launch their own launchers. The Shavit is a space launch vehicle produced by Israel to launch small satellites into low earth orbit. It was first launched in 1988, making Israel the eighth nation to have a space launch capability. Shavit rockets are launched from the spaceport at the Palmachim Airbase by the Israeli Space Agency. Since 1988 Israel Aerospace Industries have indigenously designed and built at least 13 commercial, research and spy satellites. Some of Israel's satellites are ranked among the world's most advanced space systems. In 2003, Ilan Ramon became Israel's first astronaut, serving as payload specialist of STS-107, the fatal mission of the Space Shuttle Columbia.

paragraph_text: Libya (; ; ), officially the State of Libya, is a country in the Maghreb region in North Africa, bordered by the Mediterranean Sea to the north, Egypt to the east, Sudan to the southeast, Chad to the south, Niger to the southwest, Algeria to the west, and Tunisia to the northwest. The sovereign state is made of three historical regions: Tripolitania, Fezzan and Cyrenaica. With an area of almost , Libya is the fourth largest country in Africa, and is the 16th largest country in the world. Libya has the 10th-largest proven oil reserves of any country in the world. The largest city and capital, Tripoli, is located in western Libya and contains over one million of Libya's six million people. The second-largest city is Benghazi, which is located in eastern Libya.

paragraph_text: Orbiting Carbon Observatory 2 (OCO-2) is an American environmental science satellite which launched on 2 July 2014. A NASA mission, it is a replacement for the Orbiting Carbon Observatory which was lost in a launch failure in 2009. It is the second successful high-precision (better than 0.3%) observing satellite, after GOSAT.

paragraph_text: On 24 March 2009, the Nigerian Federal Ministry of Science and Technology, NigComSat Ltd. and CGWIC signed another contract for the in-orbit delivery of the NigComSat-1R satellite. NigComSat-1R was also a DFH-4 satellite, and the replacement for the failed NigComSat-1 was successfully launched into orbit by China in Xichang on December 19, 2011. The satellite according to then-Nigerian President Goodluck Jonathan which was paid for by the insurance policy on NigComSat-1 which de-orbited in 2009, would have a positive impact on national development in various sectors such as communications, internet services, health, agriculture, environmental protection and national security.

paragraph_text: Hot Bird 13C, formerly Hot Bird 9, is a communications satellite operated by Eutelsat, launched 20 December 2008 aboard an Ariane 5ECA carrier rocket along with the Eutelsat W2M spacecraft. It was built by EADS Astrium, based on a Eurostar E3000 satellite bus. It was positioned in geosynchronous orbit at 13°E. After in-orbit testing it will provide communications services to Asia, Europe, Americas, North Africa and the Middle East, with 64 NATO J-band (IEEE K band) transponders.

paragraph_text: Japan is a member of the ASEAN Plus mechanism, UN, the OECD, the G7, the G8, and the G20, and is considered a great power. Its economy is the world's third-largest by nominal GDP and the fourth-largest by purchasing power parity. It is also the world's fourth-largest exporter and fourth-largest importer.

paragraph_text: The first satellite of the second-generation system, Compass-M1 was launched in 2007. It was followed by further nine satellites during 2009-2011, achieving functional regional coverage. A total of 16 satellites were launched during this phase.

paragraph_text: USA-192, also known as GPS IIR-16(M), GPS IIRM-3 and GPS SVN-58, is an American navigation satellite which forms part of the Global Positioning System. It was the third of eight Block IIRM satellites to be launched, and the sixteenth of twenty one Block IIR satellites overall. It was built by Lockheed Martin, using the AS-4000 satellite bus.

paragraph_text: Astérix, the first French satellite, was launched on November 26, 1965 by a Diamant A rocket from Hammaguir, Algeria. With Astérix, France became the sixth country to have an artificial satellite in orbit after: USSR (Sputnik 1, 1957), the United States (Explorer 1, 1958), the United Kingdom (Ariel 1, 1962), Canada (Alouette 1, 1962) and Italy (San Marco 1, 1964), and the third to launch a satellite on its own (the UK, Canada and Italy's satellites were launched on American rockets). The satellite was originally designated A-1, as the French Army's first satellite, but later renamed after the popular French comics character Astérix. Due to the relatively high altitude of its orbit, it is not expected to re-enter Earth's atmosphere for several centuries.

paragraph_text: The Marauder is an armoured, mine-protected vehicle that is produced by Paramount Group in South Africa. It was launched during the 2007 International Defence Exhibition (IDEX) and Conference in Abu Dhabi, the largest arms exhibition in the Middle East.

paragraph_text: STS-41-B was the tenth NASA Space Shuttle mission and the fourth flight of the . It launched on February 3, 1984, and landed on February 11 after deploying two communications satellites. It was also notable for including the first untethered spacewalk.

paragraph_text: On July 25, 2015, the 18th and 19th satellites were successfully launched from the Xichang Satellite Launch Center, marking the first time for China to launch two satellites at once on top of a Long March 3B/Expedition-1 carrier rocket. The Expedition-1 is an independent upper stage capable of delivering one or more spacecraft into different orbits.

paragraph_text: OPS 5118, also known as Navstar 6, GPS I-6 and GPS SVN-6, was an American navigation satellite launched in 1980 as part of the Global Positioning System development programme. It was the sixth of eleven Block I GPS satellites to be launched.

paragraph_text: The first satellite, BeiDou-1A, was launched on 30 October 2000, followed by BeiDou-1B on 20 December 2000. The third satellite, BeiDou-1C (a backup satellite), was put into orbit on 25 May 2003. The successful launch of BeiDou-1C also meant the establishment of the BeiDou-1 navigation system.

paragraph_text: AsiaSat 6 / Thaicom 7 is a geostationary communications satellite which is operated by the Asia Satellite Telecommunications Company (AsiaSat) and was launched into orbit on 7 September 2014.

paragraph_text: Tehran is the country's capital and largest city, as well as its leading cultural and economic center. Iran is a major regional and middle power, exerting considerable influence in international energy security and the world economy through its large reserves of fossil fuels, which include the largest natural gas supply in the world and the fourth-largest proven oil reserves. Iran's rich cultural legacy is reflected in part by its 19 UNESCO World Heritage Sites, the fourth-largest number in Asia and 12th-largest in the world.

paragraph_text: The US economy is fueled by abundant natural resources, a well - developed infrastructure, and high productivity. It has second highest total estimated value of natural resources, valued at $45 trillion in 2016. Americans have the highest average household and employee income among OECD nations, and in 2010 had the fourth highest median household income, down from second highest in 2007. It has been the world's largest national economy (not including colonial empires) since at least the 1890s. The U.S. is the world's third largest producer of oil and natural gas. In 2016, it was the largest trading nation in the world as well as the world's second largest manufacturer, representing a fifth of the global manufacturing output. The US also has not only the largest economy, but also the largest Industrial sector, at 2005 prices according to the UNCTAD. The US not only has the largest internal market for goods, but also dominates the trade in services. US total trade amounted to $4.92 trillion in 2016. Of the world's 500 largest companies, 134 are headquartered in the US.

paragraph_text: SDS-4 (Small Demonstration Satellite 4) is a small satellite (50 cm cube with mass of 50 kg) developed by JAXA and to be launched as a secondary payload on the Shizuku mission in mid-2012.

paragraph_text: In 1957 the Soviet Union launched the world's first artificial satellite, Sputnik 1. Since then, about 6,600 satellites from more than 40 countries have been launched. According to a 2013 estimate, 3,600 remained in orbit. Of those, about 1,000 were operational; while the rest have lived out their useful lives and become space debris. Approximately 500 operational satellites are in low - Earth orbit, 50 are in medium - Earth orbit (at 20,000 km), and the rest are in geostationary orbit (at 36,000 km). A few large satellites have been launched in parts and assembled in orbit. Over a dozen space probes have been placed into orbit around other bodies and become artificial satellites to the Moon, Mercury, Venus, Mars, Jupiter, Saturn, a few asteroids, a comet and the Sun.

paragraph_text: As of 2015[update], Nigeria is the world's 20th largest economy, worth more than $500 billion and $1 trillion in terms of nominal GDP and purchasing power parity respectively. It overtook South Africa to become Africa's largest economy in 2014. Also, the debt-to-GDP ratio is only 11 percent, which is 8 percent below the 2012 ratio. Nigeria is considered to be an emerging market by the World Bank; It has been identified as a regional power on the African continent, a middle power in international affairs, and has also been identified as an emerging global power. Nigeria is a member of the MINT group of countries, which are widely seen as the globe's next "BRIC-like" economies. It is also listed among the "Next Eleven" economies set to become among the biggest in the world. Nigeria is a founding member of the Commonwealth of Nations, the African Union, OPEC, and the United Nations amongst other international organisations.

Question: When did the largest economy in Africa launch its fourth satellite?
Answer: December 19, 2011