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Lidiya Tseraskaya
Lidiya Petrovna Tseraskaya née Shelekhova (Russian: Лидия Петровна Цераская) (22 June 1855 – 24 December 1931) was a Russian astronomer. Tseraskaya was born in Astrakhan, and graduated from the Teacher's Institute in Petersberg. She worked at the Sternberg Astronomical Institute, Moscow Observatory, where she discovered 219 variable stars; among them (1905) RV Tauri variable and recognized its uniqueness. The Venusian crater Tseraskaya was named after her. Her academic papers were published under her husband's name, "W. Ceraski". Tseraskaya was married to Vitold Tserasky (1849–1925), also known as Vitol'd Karlovic Tseraskiy or Witold Ceraski, who was Professor of Astronomy as Moscow University and director at the Moscow Observatory , after whom asteroid 807 Ceraskia and lunar crater Tseraskiy (crater), ''Tseraskiy'' were named. References External links Lidiya Tseraskaya, Soviet astronomer (1855–1931) ''Biographical Encyclopedia of Ast ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astrakhan
Astrakhan ( rus, Астрахань, p=ˈastrəxənʲ) is the largest city and administrative centre of Astrakhan Oblast in Southern Russia. The city lies on two banks of the Volga, in the upper part of the Volga Delta, on eleven islands of the Caspian Depression, 60 miles (100 km) from the Caspian Sea, with a population of 475,629 residents at the 2021 Census. At an elevation of below sea level, it is the lowest city in Russia. Astrakhan was formerly the capital of the Khanate of Astrakhan (a remnant of the Golden Horde), and was located on the higher right bank of the Volga, 7 miles (11 km) from the present-day city. Situated on caravan and water routes, it developed from a village into a large trading centre, before being conquered by Timur in 1395 and captured by Ivan the Terrible in 1556. In 1558 it was moved to its present site. The oldest economic and cultural center of the Lower Volga, [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moscow Observatory
The Sternberg Astronomical Institute (Государственный астрономический институт имени Штернберга in Russian), also known as GAISh (ГАИШ), is a research institution in Moscow, Russia, a division of Moscow State University. The institute is named after astronomer Pavel Karlovich Shternberg. It was founded in 1931, on the site of the observatory established by the university in 1831. The main-belt asteroid 14789 GAISH, discovered by Lyudmila Chernykh at the Crimean Astrophysical Observatory The Crimean Astrophysical Observatory (CrAO, obs. code: 095) is located at Nauchnij research campus, near the Central Crimean city of Bakhchysarai, on the Crimean peninsula. CrAO is often called simply by its location and campus name, ... in 1969, was named in its honour. The official naming citation was published on 6 January 2007 (). References External links Sternberg Astronomical Institute {{Authority control Resear ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vitold Tserasky
Vitold Karlovich Tserasky also spelled Witold Cerasky (Russian:Витольд Карлович Цераский; 9 May 1849 – 29 May 1925) was a Russian astronomer and inventor of astronomical tools and techniques. The asteroid 807 Ceraskia and the Lunar crater Tseraskiy are named after him. Tserasky was born in Slutsk, Minsk where his father of Polish–Lithuanian descent was a geography teacher. A visit of Donati's comet in 1858 sparked an interest in Tserasky and he joined Moscow University in 1867 where he spent time at the astronomical observatory . He joined the astronomical observatory as an assistant and made a trip in 1874 to Kyakhta to make observations on the transit of Venus frameless, upright=0.5 A transit of Venus across the Sun takes place when the planet Venus passes directly between the Sun and a superior planet, becoming visible against (and hence obscuring a small portion of) the solar disk. During a trans .... He then took an interest in astrono ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astronomer
An astronomer is a scientist in the field of astronomy who focuses their studies on a specific question or field outside the scope of Earth. They observe astronomical objects such as stars, planets, natural satellite, moons, comets and galaxy, galaxies – in either observational astronomy, observational (by analyzing the data) or theoretical astronomy. Examples of topics or fields astronomers study include planetary science, Sun, solar astronomy, the Star formation, origin or stellar evolution, evolution of stars, or the galaxy formation and evolution, formation of galaxies. A related but distinct subject is physical cosmology, which studies the Universe as a whole. Types Astronomers usually fall under either of two main types: observational astronomy, observational and theoretical astronomy, theoretical. Observational astronomers make direct observations of Astronomical object, celestial objects and analyze the data. In contrast, theoretical astronomers create and investigate C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sternberg Astronomical Institute
The Sternberg Astronomical Institute (Государственный астрономический институт имени Штернберга in Russian), also known as GAISh (ГАИШ), is a research institution in Moscow, Russia, a division of Moscow State University. The institute is named after astronomer Pavel Karlovich Shternberg. It was founded in 1931, on the site of the observatory established by the university in 1831. The main-belt asteroid 14789 GAISH, discovered by Lyudmila Chernykh at the Crimean Astrophysical Observatory The Crimean Astrophysical Observatory (CrAO, List of observatory codes, obs. code: IAU code#095, 095) is located at Nauchnij research campus, near the Central Crimean city of Bakhchysarai, on the Crimean peninsula. CrAO is often called ... in 1969, was named in its honour. The official naming citation was published on 6 January 2007 (). References External links Sternberg Astronomical Institute {{Authority control Resea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Variable Star
A variable star is a star whose brightness as seen from Earth (its apparent magnitude) changes with time. This variation may be caused by a change in emitted light or by something partly blocking the light, so variable stars are classified as either: * Intrinsic variables, whose luminosity actually changes; for example, because the star periodically swells and shrinks. * Extrinsic variables, whose apparent changes in brightness are due to changes in the amount of their light that can reach Earth; for example, because the star has an orbiting companion that sometimes eclipses it. Many, possibly most, stars have at least some variation in luminosity: the energy output of the Sun, for example, varies by about 0.1% over an 11-year solar cycle. Discovery An ancient Egyptian calendar of lucky and unlucky days composed some 3,200 years ago may be the oldest preserved historical document of the discovery of a variable star, the eclipsing binary Algol. Of the modern astronomers, th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RV Tauri Variable
RV Tauri variables are luminous variable stars that have distinctive light variations with alternating deep and shallow minima. History and discovery German astronomer Friedrich Wilhelm Argelander monitored the distinctive variations in brightness of R Scuti from 1840 to 1850. R Sagittae was noted to be variable in 1859, but it was not until the discovery of RV Tauri by Russian astronomer Lidiya Tseraskaya in 1905 that the class of variable was recognised as distinct. Three spectroscopic groups were identified: * A, ''GK-type'' with spectra unambiguously of type G or K * B, ''Fp(R)'', spectra are inconsistent, with features of F, G, and later classes found together, plus carbon (class R) features * C, ''Fp'', peculiar spectra with generally weak absorption lines and without strong carbon bands RV Tauri stars are further classified into two photometric sub-types based on their light curves: * RVa: these are RV Tauri variables which do not vary in mean brightness * RVb: these a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Venusian Crater
This is a list of craters on Venus, named by the International Astronomical Union's (IAU) Working Group for Planetary System Nomenclature. All craters on Venus are named after famous women or female first names. ''(For features on Venus other than craters see, list of montes on Venus and List of coronae on Venus.)'' As of 2017, there are 900 named craters on Venus, fewer than the lunar and Martian craters but more than on Mercury. Other, non-planetary bodies with numerous named craters include Callisto (141), Ganymede ( 131), Rhea (128), Vesta (90), Ceres (90), Dione (73), Iapetus (58), Enceladus (53), Tethys (50) and Europa ( 41). For a full list, ''see List of craters in the Solar System''. A back to top B back to top C back to top D back to top E back to top F back to top G back to top H back to top I back to top J back to top K back to top L back to top M back to top N back to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
807 Ceraskia
807 Ceraskia ( ''prov. designation'': ''or'' ) is an elongated Eos asteroid from the outer regions of the asteroid belt. It was discovered on 18 April 1915, by German astronomer Max Wolf at the Heidelberg-Königstuhl State Observatory in southwest Germany. The S-type asteroid has a rotation period of 7.4 hours and measures approximately in diameter. It was named after Belarusian–Soviet astronomer Vitold Cerasky (1849–1925). Orbit and classification ''Ceraskia'' is a core member the Eos family (), the largest asteroid family of the outer main belt consisting of nearly 10,000 known asteroids. It orbits the Sun in the outer asteroid belt at a distance of 2.8–3.2 AU once every 5 years and 3 months (1,913 days; semi-major axis of 3.02 AU). Its orbit has an eccentricity of 0.07 and an inclination of 11 ° with respect to the ecliptic. The asteroid was first observed as at Heidelberg Observatory on 18 January 1909. The body's observation arc begins at Vienna ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tseraskiy (crater)
Tseraskiy (Ceraski) is an impact crater on the Moon's Far side (Moon), far side, approximately in diameter. It is located to the north-northeast of the huge walled plain Planck (crater), Planck, and to the southeast of the crater Pauli (crater), Pauli. To the east-northeast of Tseraskiy is Crocco (crater), Crocco. This is an eroded crater formation and the outer rim has been steady worn down to a roughly circular ridge with rounded edges. This crater overlies an older crater along the southwest side. There is a small crater along the exterior of the rim to the northeast. The interior floor is relatively level and is marked by several small and tiny craterlets, particularly in the western half. In some publications name has been spelt as Ceraski. 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 Tseraskiy. See also * Asteroid 807 Ceraskia References * * * * * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1855 Births
Events January–March * January 1 – Ottawa, Ontario, is incorporated as a city. * January 5 – Ramón Castilla begins his third term as President of Peru. * January 23 ** The first bridge over the Mississippi River opens in modern-day Minneapolis, a predecessor of the Father Louis Hennepin Bridge. ** The 8.2–8.3 Wairarapa earthquake claims between five and nine lives near the Cook Strait area of New Zealand. * January 26 – The Point No Point Treaty is signed in the Washington Territory. * January 27 – The Panama Railway becomes the first railroad to connect the Atlantic and Pacific Oceans. * January 29 – Lord Aberdeen resigns as Prime Minister of the United Kingdom, over the management of the Crimean War. * February 5 – Lord Palmerston becomes Prime Minister of the United Kingdom. * February 11 – Kassa Hailu is crowned Tewodros II, Emperor of Ethiopia. * February 12 – Michigan State University (the "pioneer" l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
