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Oskar Backlund
Johan Oskar Backlund (28 April 1846 – 29 August 1916) was a Swedish-Russian astronomer. His name is sometimes given as Jöns Oskar Backlund, however even contemporary Swedish sources give "Johan". In Russia, where he spent his entire career, he is known as Oskar Andreevich Baklund (Оскар Андреевич Баклунд). Russian sources sometimes give his dates of birth and death as 16 April 1846 and 16 August 1916, since Russia still used the Julian calendar at the time. Life He was born in Länghem, in Västergötland, Sweden and graduated from Uppsala University in 1872. After getting his doctorate in 1875, he emigrated to Russia in 1876. He worked at Dorpat Observatory, in today's Tartu, Estonia, and then in 1879 worked at Pulkovo Observatory, becoming director of the observatory from 1895 until his death. He specialized in celestial mechanics, and notably worked on calculating the orbit of Comet Encke, taking into account the perturbations of various planets. H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oskar Backlund
Johan Oskar Backlund (28 April 1846 – 29 August 1916) was a Swedish-Russian astronomer. His name is sometimes given as Jöns Oskar Backlund, however even contemporary Swedish sources give "Johan". In Russia, where he spent his entire career, he is known as Oskar Andreevich Baklund (Оскар Андреевич Баклунд). Russian sources sometimes give his dates of birth and death as 16 April 1846 and 16 August 1916, since Russia still used the Julian calendar at the time. Life He was born in Länghem, in Västergötland, Sweden and graduated from Uppsala University in 1872. After getting his doctorate in 1875, he emigrated to Russia in 1876. He worked at Dorpat Observatory, in today's Tartu, Estonia, and then in 1879 worked at Pulkovo Observatory, becoming director of the observatory from 1895 until his death. He specialized in celestial mechanics, and notably worked on calculating the orbit of Comet Encke, taking into account the perturbations of various planets. H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saint Petersburg
Saint Petersburg ( rus, links=no, Санкт-Петербург, a=Ru-Sankt Peterburg Leningrad Petrograd Piter.ogg, r=Sankt-Peterburg, p=ˈsankt pʲɪtʲɪrˈburk), formerly known as Petrograd (1914–1924) and later Leningrad (1924–1991), is the second-largest city in Russia. It is situated on the Neva River, at the head of the Gulf of Finland on the Baltic Sea, with a population of roughly 5.4 million residents. Saint Petersburg is the fourth-most populous city in Europe after Istanbul, Moscow and London, the most populous city on the Baltic Sea, and the world's northernmost city of more than 1 million residents. As Russia's Imperial capital, and a historically strategic port, it is governed as a federal city. The city was founded by Tsar Peter the Great on 27 May 1703 on the site of a captured Swedish fortress, and was named after apostle Saint Peter. In Russia, Saint Petersburg is historically and culturally associated with t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Olav V Land
Olav V Land is a peninsula in eastern Spitsbergen Island, Svalbard named after Olav V of Norway. It is covered by the Olav V Icefield, measuring about .''Glacier Atlas of Svalbard and Jan Mayen''. 1993. Oslo: Norsk polarinstitutt, p. 32. The only larger ice cap in the Svalbard Archipelago is Austfonna in Nordaustlandet Nordaustlandet (sometimes translated as North East Land) is the second-largest island in the archipelago of Svalbard, Norway, with an area of . It lies north east of Spitsbergen, separated by Hinlopen Strait. Much of Nordaustlandet lies under la ..., with an area of . References * http://www.ssb.no/aarbok/kart/i.html Peninsulas of Spitsbergen {{Spitsbergen-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Backlundtoppen
Backlundtoppen is a mountain in Olav V Land at Spitsbergen, Svalbard. It has a height of 1,068 m.a.s.l. and is located east of Billefjorden and west of Akademikarbreen Akademikarbreen (until 1995 spelled Akademikerbreen) is a glacier in Olav V Land at Spitsbergen, Svalbard. It covers an area of about 500 square kilometers and is located east of Backlundtoppen and Svanbergfjellet. The glacier extends from Bil .... The mountain is named after Swedish-Russian astronomer Johan Oskar Backlund. It hosted a trigonometric station during the Swedish-Russian Arc-of-Meridian Expedition. References History of Earth science Mountains of Spitsbergen {{Spitsbergen-mountain-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
856 Backlunda
856 Backlunda ( ''prov. designation'': ''or'' ) is a dark background asteroid from the inner region of the asteroid belt. It was discovered on 3 April 1916, by Russian astronomer Sergey Belyavsky at the Simeiz Observatory on the Crimean peninsula. The carbonaceous C-type asteroid has a rotation period of 12.1 hours and measures approximately in diameter. It was named after Swedish-Russian astronomer Oskar Backlund (1846–1916). Orbit and classification ''Backlunda'' is a non-family asteroid of the main belt's background population when applying the hierarchical clustering method to its proper orbital elements. It orbits the Sun in the inner asteroid belt at a distance of 2.1–2.7 AU once every 3 years and 10 months (1,388 days; semi-major axis of 2.43 AU). Its orbit has an eccentricity of 0.12 and an inclination of 14 ° with respect to the ecliptic. The asteroid was first observed as at Taunton Observatory in February 1908. The body's observation arc begins a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asteroid
An asteroid is a minor planet of the inner Solar System. Sizes and shapes of asteroids vary significantly, ranging from 1-meter rocks to a dwarf planet almost 1000 km in diameter; they are rocky, metallic or icy bodies with no atmosphere. Of the roughly one million known asteroids the greatest number are located between the orbits of Mars and Jupiter, approximately 2 to 4 AU from the Sun, in the main asteroid belt. Asteroids are generally classified to be of three types: C-type, M-type, and S-type. These were named after and are generally identified with carbonaceous, metallic, and silicaceous compositions, respectively. The size of asteroids varies greatly; the largest, Ceres, is almost across and qualifies as a dwarf planet. The total mass of all the asteroids combined is only 3% that of Earth's Moon. The majority of main belt asteroids follow slightly elliptical, stable orbits, revolving in the same direction as the Earth and taking from three to six years to comple ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moon
The Moon is Earth's only natural satellite. It is the fifth largest satellite in the Solar System and the largest and most massive relative to its parent planet, with a diameter about one-quarter that of Earth (comparable to the width of Australia). The Moon is a planetary-mass object with a differentiated rocky body, making it a satellite planet under the geophysical definitions of the term and larger than all known dwarf planets of the Solar System. It lacks any significant atmosphere, hydrosphere, or magnetic field. Its surface gravity is about one-sixth of Earth's at , with Jupiter's moon Io being the only satellite in the Solar System known to have a higher surface gravity and density. The Moon orbits Earth at an average distance of , or about 30 times Earth's diameter. Its gravitational influence is the main driver of Earth's tides and very slowly lengthens Earth's day. The Moon's orbit around Earth has a sidereal period of 27.3 days. During each synodic period ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Backlund (crater)
Backlund is a worn lunar impact crater on the far side of the Moon, beyond the eastern limb, astride the southern rim of the walled plain Pasteur, to the west of the crater Hilbert. Further to the west-southwest is Sklodowska. Backlund's north and south ends are more worn and eroded than the intervening stretches. The interior floor is relatively flat, with the usual accompaniment of tiny impact craters marking the surface. Satellite craters By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Backlund. See also * Asteroid 856 Backlunda 856 Backlunda ( ''prov. designation'': ''or'' ) is a dark background asteroid from the inner region of the asteroid belt. It was discovered on 3 April 1916, by Russian astronomer Sergey Belyavsky at the Simeiz Observatory on the Crimean peninsul ... References * * * * * * * * * * * * External links * {{Craters on the Moon: A–B Impact cra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bruce Medal
The Catherine Wolfe Bruce Gold Medal is awarded every year by the Astronomical Society of the Pacific for outstanding lifetime contributions to astronomy. It is named after Catherine Wolfe Bruce, an American patroness of astronomy, and was first awarded in 1898. List of Bruce Medalists SourceAstronomical Society of the Pacific * 1898 – Simon Newcomb * 1899 – Arthur Auwers * 1900 – David Gill * 1902 – Giovanni V. Schiaparelli * 1904 – William Huggins * 1906 – Hermann Carl Vogel * 1908 – Edward C. Pickering * 1909 – George William Hill * 1911 – Henri Poincaré * 1913 – Jacobus C. Kapteyn * 1914 – Oskar Backlund * 1915 – William Wallace Campbell * 1916 – George Ellery Hale * 1917 – Edward Emerson Barnard * 1920 – Ernest W. Brown * 1921 – Henri A. Deslandres * 1922 – Frank W. Dyson * 1923 – Benjamin Baillaud * 1924 – Arthur Stanley Eddington * 1925 – Henry Norris Russell * 1926 – Robert G. Aitken * 1927 – Herbert Hall Turner * 19 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gold Medal Of The Royal Astronomical Society
The Gold Medal of the Royal Astronomical Society is the highest award given by the Royal Astronomical Society (RAS). The RAS Council have "complete freedom as to the grounds on which it is awarded" and it can be awarded for any reason. Past awards have been given for "outstanding personal researches in the fields of astronomy and geophysics" as well as general contributions to astronomy and geophysics "that may be made through leadership in research programmes, through education and through scientific administration". It has been awarded both for research that has taken a lifetime (it has most frequently been given to recognise an extraordinary lifetime achievement), and for specific pieces of research. History The RAS was founded in 1820 and the first Gold Medals were awarded in 1824. Silver medals were also awarded in 1824 and 1827, but that practice was quickly abandoned, instead the RAS established other awards. In the early years, more than one medal was often awarded in a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Helge Gotrik Backlund
Helge or Helgi is a Scandinavian, German, and Dutch mostly male name. The name is derived from Proto-Norse ''Hailaga'' with its original meaning being ''dedicated to the gods''. For its Slavic version, see Oleg. Its feminine equivalent is Olga. Notable people with this name * Halga, legendary Danish king mentioned in ''Beowulf'' and in medieval Scandinavian sources *Helgi Hjörvarðsson, Scandinavian hero from '' Helgakviða Hjörvarðssonar'', in the '' Poetic Edda'' * Helgi Hundingsbane, Scandinavian hero who figures in the ''Völsunga saga'' and who has two poems in the '' Poetic Edda'' * Helgi Haddingjaskati, Swedish hero from ''Hrómundar saga Gripssonar'' *Helge (Danish king), 9th-century king *Helge Akre (1903–1986), Norwegian diplomat *Helge Bostrom (1894–1977), Canadian ice hockey player *Helge Jung (1886–1978), Swedish General *Helgi the Sharp (other), several people *Helgi Tómasson (other), several people * Helge Rosvaenge (1897–1972), D ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elsa Celsing
Elsa Celsing (25 March 1880 – 19 April 1974), also known as Elsa Backlund-Celsing, was a Russian-Swedish artist known for her portraits, still lifes, and scenes of domestic life. Life Born Elsa Carolina Backlund, she was the daughter of Swedish-Russian astronomer Oskar Backlund and Ulrika Widebeck. She was born in Pulkovo, Russia, where her father was for many years director of the Pulkovo Observatory. She studied art in nearby St. Petersburg with Ilya Repin and later with Anders Zorn in Sweden and Eugène Carrière in Paris. In 1912, she married Ulrik Fredrik Adolf Hugo Celsing, an agronomist, and moved to Sweden. They had three children. After her marriage, she signed her work 'E. Backlund-Celsing' in place of the earlier 'E. Celsing'. She died in Västerås Västerås ( , , ) is a city in central Sweden on the shore of Mälaren, Lake Mälaren in the province of Västmanland, west of Stockholm. The city had a population of 127,799 at the end of 2019, out of the munici ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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