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32-402: S2 or S II may refer to: Science and technology [ edit ] S2 (star) , Milky Way galaxy S/2007 S 2 , a natural satellite of Saturn S2 impact (ie, "Spherules 2"), major impact of early Earth S2 map projection , a map projection created at Google S2 steel (shock resisting steel) S2: Keep out of the reach of children ,

64-673: A Schwarzschild precession of 12 arcminutes (0.2 degrees) in S2's orbit caused by the close passage, fully consistent with general relativity. In 2012, a star called S0–102 (or S55) was found to be orbiting even closer to the Milky Way's central supermassive black hole than S0–2 does. At one-sixteenth the brightness of S0–2, S0–102 was not initially recognized because it required many more years of observations to distinguish it from its local infrared background. S0–102 has an orbital period of 12.8 years, even shorter than that of S0–2. Of all

96-971: A Short Brothers aircraft Strojnik S-2 , motorglider S-II or S-2, the second stage of the Saturn V rocket Rail [ edit ] Locomotives [ edit ] Alco S-2 , a locomotive Pennsylvania Railroad class S2 , a unique steam turbine locomotive NER Class S2 , a class of British steam locomotives Passenger services [ edit ] S2 (Berlin) , an S-Bahn service S2 (Dresden) , an S-Bahn service S2 (Munich) , an S-Bahn service S2 (Nuremberg) , an S-Bahn service S2 (RER Vaud) , an S-Bahn service in Switzerland S2 (Rhine-Main S-Bahn) , an S-Bahn service S2 (Rhine-Ruhr S-Bahn) , an S-Bahn service S2 (St. Gallen S-Bahn) , an S-Bahn line in Switzerland S2,

128-608: A 3l naturally aspirated Porsche 944 sports car Roads and bus routes [ edit ] County Route S2 (California) Expressway S2 (Poland) , a southern bypass of Warsaw S2 National Highway , one of the National Highways of Pakistan S2 expressway (Shanghai) , an expressway in Shanghai also known as the Hulu Expressway S2, an abbreviation for a standard single carriageway road, with

160-436: A US Navy submarine Göta Signal Corps (designation S2), a 1944–1997 Swedish Army signal unit S2 (missile) , the first deployed French land-based strategic missile S-2, a military intelligence officer on the staff of a regiment or battalion HMS Rorqual (S02) , a 1956 British Royal Navy Porpoise -class submarine ORP S-2 , Polish World War II motor gun boat Organisations [ edit ] S2 Records ,

192-504: A commonly used Drosophila cell line Secondary somatosensory cortex , a brain area in the parietal cortex Sacral spinal nerve 2 , a spinal nerve of the sacral segment Schedule 2, an Australian legal category assigned to drugs; See Standard for the Uniform Scheduling of Medicines and Poisons S2, the second sacral vertebrae S 2 (heart sound) , a sound in cardiac auscultation ATC code S02 Otologicals ,

224-460: A maximum at closest approach, which occurred in mid-2018. Given a recent estimate of 4.31 million  M ☉ for the mass of the Sgr ;A* black hole and S2's close approach, this makes S2's the fastest known ballistic orbit, reaching speeds exceeding 5,000 km/s (11,000,000 mph, or 1 ⁄ 60 the speed of light). The motion of S2 is also useful for detecting

256-639: A planned Bremen S-Bahn service S2, a Hamburg S-Bahn service S2, a Hanover S-Bahn service S2, a RheinNeckar S-Bahn service S2, a Rostock S-Bahn service S2, a Stuttgart S-Bahn service S2, a Stadtbahn Karlsruhe service S2 (ZVV) , a service of the S-Bahn Zürich in Switzerland Line S2 (BCR) , a commuter rail service in Beijing Line S2 (Milan suburban railway service) Line S2 (Nanjing Metro) ,

288-536: A safety phrase in chemistry Disulfur (S 2 ), an allotrope of sulfur Sulfide ( S ) anion Mathematics [ edit ] S, the two-dimensional n-sphere S 2 , the permutation group on two elements Biology and medicine [ edit ] British NVC community S2 , a swamps and tall-herb fens community in the British National Vegetation Classification system Schneider 2 cells , or S2 cells,

320-487: A single lane going in each direction Stagecoach Gold bus route S2 , a bus route in Oxfordshire, England Aviation and space [ edit ] Bangladesh (aircraft registration code) JetLite (IATA airline code) Focke-Wulf S 2 , a 1928 German trainer aircraft Grumman S-2 Tracker , a 1952 United States Navy anti-submarine warfare (ASW) aircraft SABCA S-2 , a 1926 Belgian aircraft Short S.2 ,

352-612: A subgroup of the Anatomical Therapeutic Chemical Classification System Computing [ edit ] S2 (programming language) S2 Spreadsheet , by IBM in 1984 Transportation [ edit ] Cars [ edit ] AS S2 , a 1927 car manufactured in Poland Audi S2 , a turbo-charged sports car Lotus Elise S2, a Lotus Elise production series of roadster automobile Porsche 944 S2,

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384-456: A subsidiary of Sony Music S2 (TV channel) , a former Scottish television channel S2 Games , a video game developer S2 Yachts , a defunct sailboat-building company Products [ edit ] Samsung Galaxy S II , an Android smartphone Samsung Gear S2 , a Tizen smartwatch Samsung Galaxy Tab S2 , an Android tablet Cameras [ edit ] Nikon S2, a 35mm rangefinder camera produced between 1954 and 1958 as part of

416-653: A suburban rapid transit line currently under construction in China Line S2 (Wenzhou Rail Transit) , a suburban rapid transit line currently under construction in China FGC line S2 , a suburban train service in Barcelona Province Military [ edit ] Soviet submarine S-2 , a Soviet World War II submarine Grumman S-2 Tracker , a US Navy aircraft Finnish torpedo boat S2 , which sank in 1925 USS S-2 (SS-106) ,

448-606: A version of the racing simulation Live for Speed S2, a district of the S postcode area , covering areas of eastern Sheffield Seattle Sounders FC 2 , nicknamed S2 Second year , in the Scottish education system S2 (classification) , used for categorising swimmers based on their level of disability Splatoon 2 , a 2017 video game for the Nintendo Switch Pitts Special , Two-Seat Aerobatics Biplane [REDACTED] Topics referred to by

480-588: Is different from Wikidata All article disambiguation pages All disambiguation pages S2 (star) Its changing apparent position has been monitored since 1995 by two groups (at UCLA and at the Max Planck Institute for Extraterrestrial Physics ) as part of an effort to gather evidence for the existence of a supermassive black hole in the center of the Milky Way galaxy . The accumulating evidence points to Sgr A* as being

512-578: The Nikon S-mount range Nikon 1 S2 , a digital mirrorless interchangeable lens camera Canon PowerShot S2 IS , a 2005 5.0 megapixel digital camera FinePix S2 Pro , a 2002 interchangeable lens digital single-lens reflex camera by Fuji Leica S2 , a 2009 37 million pixel medium format digital single-lens reflex camera Other uses [ edit ] Seremban 2 , a suburb of Seremban, located in Negeri Sembilan, Malaysia S2,

544-536: The Earth to the Galactic Center . They determined it to be 7.94 ± 0.42 kiloparsecs , in close agreement with prior determinations by other methods. S2 was precisely tracked during its May 2018 close approach to Sgr A* , with results in accord with general relativity predictions. The designation S0–2 was first used in 1998. S0 indicates a star within one arc-second of Sgr A* , indicating

576-483: The black hole than would be possible from using S0–2 alone. A still closer star S62 has since been discovered with an orbital period of 9.9 years. JetLite JetLite was a low-cost subsidiary of Jet Airways . It was formerly known as Air Sahara until the buyout by Jet Airways which rebranded the airline as JetLite. On 17 April 2019, JetLite grounded all of its flights and ceased all operations, in tandem with its parent company, Jet Airways. The airline

608-425: The carrier's registered name. On 22 March 2004 it became an international carrier with the start of flights from Chennai to Colombo , later expanding to London , Singapore, Maldives and Kathmandu . It had also planned to become the first private Indian carrier to serve China with flights to Guangzhou from winter 2006, however, this did not materialize. The uncertainty over the airline's fate caused its share of

640-591: The deal was eventually called off over disagreements over price and the appointment of Jet chairman Naresh Goyal to the Air Sahara board. Following the failure of the deal, the companies filed lawsuits seeking damages from each other A second, eventually successful attempt was made on 12 April 2007 with Jet Airways agreeing to pay ₹14.50 billion ($ 340 million ). The deal gave Jet a combined domestic market share of about 32% . On 16 April Jet Airways announced that Air Sahara will be renamed as Jetlite. The takeover

672-558: The domestic Indian air transport market to go down from approximately 11% in January 2006 to a reported 8.5% in April 2007. Jet Airways announced its first takeover attempt on 19 January 2006, offering US$ 500 million (₹20 billion) in cash for the airline. Market reaction to the deal was mixed, with many analysts suggesting that Jet Airways was paying too much for Air Sahara. The Indian Civil Aviation Ministry gave approval in principle, but

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704-560: The galactic centre, and S0–2 was the second closest star seen at the time of the measurements. The star had been catalogued simply as S2 a year earlier, the second of eleven infrared sources near the galactic centre, numbered approximately anti-clockwise. It is a coincidence that the star is numbered "2" in both lists; other catalogues number it differently. The highly eccentric orbit of S2 will give astronomers an opportunity to test for various effects predicted by general relativity and even extra-dimensional effects. These effects reached

736-573: The line of sight from Earth peaked in April, and later hit its minimum in late August and early September. Independent analyses by the GRAVITY collaboration (led by Reinhard Genzel ) and the KECK/UCLA Galactic Center Group (led by Andrea Ghez ) revealed a combined transverse Doppler and gravitational redshift up to 200 km/s/c, in agreement with general relativity predictions. Additional analysis has revealed

768-544: The merger of the two companies was completed after approval. The aircraft fleet was also progressively being repainted in Jet Airways livery. On 17 April 2019, JetLite grounded all of its flights and ceased all operations, in tandem with its parent company, Jet Airways , which also grounded all of its flights and ceased all operations on the same day. JetLite had an extensive domestic network, as well as international services to Nepal and Sri Lanka that were dropped after

800-525: The merger with JetKonnect, focusing only on domestic routes. A buy onboard menu called JetCafé with food for purchase was offered in Economy, while free meals were offered in Business class. The key trends for Jet Lite (India) Limited ('Jet Lite') over recent years are shown below (as at year ending 31 March): As of April 2019, JetLite operated the following all- Boeing 737 Next Generation fleet (until

832-461: The presence of other objects near to Sgr A* . It is believed that there are thousands of stars, as well as dark stellar remnants (stellar black holes, neutron stars , white dwarfs ) distributed in the volume through which S2 moves. These objects will perturb S2's orbit, causing it to deviate gradually from the Keplerian ellipse that characterizes motion around a single point mass . So far,

864-447: The same term This disambiguation page lists articles associated with the same title formed as a letter–number combination. If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=S2&oldid=1208423222 " Category : Letter–number combination disambiguation pages Hidden categories: Short description

896-486: The site of such a black hole. By 2008, S2 had been observed for one complete orbit. In 2020, partway through its next orbit, the GRAVITY collaboration released an analysis showing full agreement with Schwarzschild geodesics . A team of astronomers, mainly from the Max Planck Institute for Extraterrestrial Physics, used observations of S2's orbital dynamics around Sgr A* to measure the distance from

928-404: The stars orbiting the black hole, only these two have their orbital parameters and trajectories fully known in all three dimensions of space. The discovery of two stars orbiting the central black hole so closely with their orbits fully described is of extreme interest to astronomers, as the pair together will allow much more precise measurements on the nature of gravity and general relativity around

960-450: The strongest constraint that can be placed on these remnants is that their total mass comprises less than one percent of the mass of the supermassive black hole. In 2018, S2 made its closest approach to Sgr A*, reaching 7,650 km/s or almost 3% of the speed of light , while passing the black hole at a distance of just 120 AU or about 1,400 times its Schwarzschild radius . S2 reached its pericenter on May 19, 2018, while its velocity in

992-485: Was established on 20 September 1991 and began operations on 3 December 1993 with two Boeing 737–200 aircraft as Sahara India Airlines , as part of the major Sahara India Pariwar business conglomerate. Initially, services were primarily concentrated in the northern sectors of India, keeping Delhi as its base, and then operations were extended to cover all the country. Sahara India Airlines was rebranded as Air Sahara on 2 October 2000, although Sahara India Airlines remains

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1024-403: Was officially completed on 20 April, when Jet Airways paid ₹4 billion. Jetlite was merged with Jet Airways' in-house low-cost brand JetKonnect on 25 March 2012 as a move towards operating under one brand. On 1 December 2014 JetKonnect was integrated into Jet Airways ending its own operations and now flew for them under the codeshare, using its own Air Operators Certificate and flight code S2 till

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