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82 relations: Abd al-Rahman al-Sufi, Algol paradox, Algol variable, Apparent magnitude, Applegate mechanism, Arabic, Astrology, Astronomical Observatory (University of Illinois at Urbana–Champaign), Astronomical unit, Bayer designation, Behenian fixed star, Binary star, Book of Fixed Stars, Boss General Catalogue, Bright Star Catalogue, Catalogues of Fundamental Stars, Chinese language, Comet, Constellation, Copley Medal, Doppler effect, Edmund Chilmead, Edward Charles Pickering, Geminiano Montanari, Ghoul, Gorgon, Gravity, Henry Draper Catalogue, Hermann Carl Vogel, Hipparchus, Hipparcos, IAU Working Group on Star Names, International Astronomical Union, Iota Persei, Joel Stebbins, Johannes Hevelius, John Goodricke, Kappa Persei, Latin, Light-year, Line-of-sight propagation, Luck, Main sequence, Mass transfer, Medusa, Minute and second of arc, Monthly Notices of the Royal Astronomical Society, Nova, Occultation, Oort cloud, ..., Orbital period, Orbital plane (astronomy), Perseus, Perseus (constellation), Perturbation (astronomy), Pi Persei, Pliny the Elder, PPM Star Catalogue, Ptolemy, Radial velocity, Radio wave, Rho Persei, Roche lobe, Royal Society, Sirius, Smithsonian Astrophysical Observatory Star Catalog, Solar System, Star system, Stars and planetary systems in fiction, Stellar evolution, Stomach (Chinese constellation), Subgiant, Sun, Sunspot, Tau Persei, Tetrabiblos, Variable star, Washington Double Star Catalog, X-ray, 12 Persei, 16 Persei, 9 Persei. Expand index (32 more) »
Abd al-Rahman al-Sufi
'Abd al-Rahman al-Sufi (عبدالرحمن صوفی (December 7, 903 in Rey, Iran – May 25, 986 in Shiraz, Iran) was a Persian astronomer also known as 'Abd ar-Rahman as-Sufi, 'Abd al-Rahman Abu al-Husayn, 'Abdul Rahman Sufi, or 'Abdurrahman Sufi and, historically, in the West as Azophi and Azophi Arabus. The lunar crater Azophi and the minor planet 12621 Alsufi are named after him. Al-Sufi published his famous Book of Fixed Stars in 964, describing much of his work, both in textual descriptions and pictures. Al-Biruni reports that his work on the ecliptic was carried out in Shiraz. He lived at the Buyid court in Isfahan.
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Algol paradox
In stellar astronomy, the Algol paradox is a paradoxical situation when elements of a binary star seem to evolve in discord with the established theories of stellar evolution.
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Algol variable
Algol variables or Algol-type binaries are a class of eclipsing binary stars that are related to the prototype member of this class, β Persei (Beta Persei, Algol) from an evolutionary point of view.
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Apparent magnitude
The apparent magnitude of a celestial object is a number that is a measure of its brightness as seen by an observer on Earth.
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Applegate mechanism
The Applegate mechanism (Applegate's mechanism or Applegate effect) explains long term orbital period variations seen in certain eclipsing binaries.
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Arabic
Arabic (العَرَبِيَّة) or (عَرَبِيّ) or) is a Central Semitic language that first emerged in Iron Age northwestern Arabia and is now the lingua franca of the Arab world. It is named after the Arabs, a term initially used to describe peoples living from Mesopotamia in the east to the Anti-Lebanon mountains in the west, in northwestern Arabia, and in the Sinai peninsula. Arabic is classified as a macrolanguage comprising 30 modern varieties, including its standard form, Modern Standard Arabic, which is derived from Classical Arabic. As the modern written language, Modern Standard Arabic is widely taught in schools and universities, and is used to varying degrees in workplaces, government, and the media. The two formal varieties are grouped together as Literary Arabic (fuṣḥā), which is the official language of 26 states and the liturgical language of Islam. Modern Standard Arabic largely follows the grammatical standards of Classical Arabic and uses much of the same vocabulary. However, it has discarded some grammatical constructions and vocabulary that no longer have any counterpart in the spoken varieties, and has adopted certain new constructions and vocabulary from the spoken varieties. Much of the new vocabulary is used to denote concepts that have arisen in the post-classical era, especially in modern times. During the Middle Ages, Literary Arabic was a major vehicle of culture in Europe, especially in science, mathematics and philosophy. As a result, many European languages have also borrowed many words from it. Arabic influence, mainly in vocabulary, is seen in European languages, mainly Spanish and to a lesser extent Portuguese, Valencian and Catalan, owing to both the proximity of Christian European and Muslim Arab civilizations and 800 years of Arabic culture and language in the Iberian Peninsula, referred to in Arabic as al-Andalus. Sicilian has about 500 Arabic words as result of Sicily being progressively conquered by Arabs from North Africa, from the mid 9th to mid 10th centuries. Many of these words relate to agriculture and related activities (Hull and Ruffino). Balkan languages, including Greek and Bulgarian, have also acquired a significant number of Arabic words through contact with Ottoman Turkish. Arabic has influenced many languages around the globe throughout its history. Some of the most influenced languages are Persian, Turkish, Spanish, Urdu, Kashmiri, Kurdish, Bosnian, Kazakh, Bengali, Hindi, Malay, Maldivian, Indonesian, Pashto, Punjabi, Tagalog, Sindhi, and Hausa, and some languages in parts of Africa. Conversely, Arabic has borrowed words from other languages, including Greek and Persian in medieval times, and contemporary European languages such as English and French in modern times. Classical Arabic is the liturgical language of 1.8 billion Muslims and Modern Standard Arabic is one of six official languages of the United Nations. All varieties of Arabic combined are spoken by perhaps as many as 422 million speakers (native and non-native) in the Arab world, making it the fifth most spoken language in the world. Arabic is written with the Arabic alphabet, which is an abjad script and is written from right to left, although the spoken varieties are sometimes written in ASCII Latin from left to right with no standardized orthography.
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Astrology
Astrology is the study of the movements and relative positions of celestial objects as a means for divining information about human affairs and terrestrial events.
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Astronomical Observatory (University of Illinois at Urbana–Champaign)
The University of Illinois Astronomical Observatory, located at 901 S. Mathews Avenue in Urbana, Illinois, on the campus of the University of Illinois at Urbana-Champaign, was built in 1896, and was designed by Charles A. Gunn.
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Astronomical unit
The astronomical unit (symbol: au, ua, or AU) is a unit of length, roughly the distance from Earth to the Sun.
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Bayer designation
A Bayer designation is a stellar designation in which a specific star is identified by a Greek letter, followed by the genitive form of its parent constellation's Latin name.
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Behenian fixed star
The Behenian fixed stars are a selection of fifteen stars considered especially useful for magical applications in the medieval astrology of Europe and the Arab world.
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Binary star
A binary star is a star system consisting of two stars orbiting around their common barycenter.
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Book of Fixed Stars
The Book of Fixed Stars (كتاب صور الكواكب) is an astronomical text written by Abd al-Rahman al-Sufi (Azophi) around 964.
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Boss General Catalogue
Boss General Catalogue (GC, sometimes General Catalogue) is an astronomical catalogue containing 33,342 stars.
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Bright Star Catalogue
The Bright Star Catalogue, also known as the Yale Catalogue of Bright Stars or Yale Bright Star Catalogue, is a star catalogue that lists all stars of stellar magnitude 6.5 or brighter, which is roughly every star visible to the naked eye from Earth.
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Catalogues of Fundamental Stars
The Catalogue of Fundamental Stars is a series of six astrometric catalogues of high precision positional data for a small selection of stars to define a celestial reference frame, which is a standard coordinate system for measuring positions of stars.
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Chinese language
Chinese is a group of related, but in many cases mutually unintelligible, language varieties, forming a branch of the Sino-Tibetan language family.
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Comet
A comet is an icy small Solar System body that, when passing close to the Sun, warms and begins to release gases, a process called outgassing.
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Constellation
A constellation is a group of stars that are considered to form imaginary outlines or meaningful patterns on the celestial sphere, typically representing animals, mythological people or gods, mythological creatures, or manufactured devices.
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Copley Medal
The Copley Medal is a scientific award given by the Royal Society, for "outstanding achievements in research in any branch of science." It alternates between the physical and the biological sciences.
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Doppler effect
The Doppler effect (or the Doppler shift) is the change in frequency or wavelength of a wave in relation to observer who is moving relative to the wave source.
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Edmund Chilmead
Edmund Chilmead (1610 – 19 February 1654) was an English writer and translator, who produced both scholarly works and hack-writing.
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Edward Charles Pickering
Prof Edward Charles Pickering FRS(For) HFRSE (July 19, 1846 – February 3, 1919) was an American astronomer and physicist and the older brother to William Henry Pickering.
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Geminiano Montanari
Geminiano Montanari. Geminiano Montanari (June 1, 1633 – October 13, 1687) was an Italian astronomer, lens-maker, and proponent of the experimental approach to science.
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Ghoul
A ghoul is a demon or monster in Arabian mythology, associated with graveyards and consuming human flesh.
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Gorgon
In Greek mythology, a Gorgon (plural: Gorgons, Γοργών/Γοργώ Gorgon/Gorgo) is a female creature.
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Gravity
Gravity, or gravitation, is a natural phenomenon by which all things with mass or energy—including planets, stars, galaxies, and even light—are brought toward (or gravitate toward) one another.
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Henry Draper Catalogue
The Henry Draper Catalogue (HD) is an astronomical star catalogue published between 1918 and 1924, giving spectroscopic classifications for 225,300 stars; it was later expanded by the Henry Draper Extension (HDE), published between 1925 and 1936, which gave classifications for 46,850 more stars, and by the Henry Draper Extension Charts (HDEC), published from 1937 to 1949 in the form of charts, which gave classifications for 86,933 more stars.
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Hermann Carl Vogel
Hermann Carl Vogel (April 3, 1841 – August 13, 1907) was a German astrophysicist.
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Hipparchus
Hipparchus of Nicaea (Ἵππαρχος, Hipparkhos) was a Greek astronomer, geographer, and mathematician.
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Hipparcos
Hipparcos was a scientific satellite of the European Space Agency (ESA), launched in 1989 and operated until 1993.
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IAU Working Group on Star Names
The International Astronomical Union (IAU) established a Working Group on Star Names (WGSN) in May 2016 to catalog and standardize proper names for stars for the international astronomical community.
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International Astronomical Union
The International Astronomical Union (IAU; Union astronomique internationale, UAI) is an international association of professional astronomers, at the PhD level and beyond, active in professional research and education in astronomy.
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Iota Persei
Iota Persei (Iota Per, ι Persei, ι Per) is a main sequence dwarf star in the constellation Perseus.
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Joel Stebbins
Joel Stebbins (July 30, 1878 – March 16, 1966) was an American astronomer who pioneered photoelectric photometry in astronomy.
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Johannes Hevelius
Johannes Hevelius Some sources refer to Hevelius as Polish.
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John Goodricke
John Goodricke FRS (17 September 1764 – 20 April 1786) was an English amateur astronomer.
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Kappa Persei
Kappa Persei (κ Persei, abbreviated Kap Per, κ Per) is a triple star system in the northern constellation of Perseus.
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Latin
Latin (Latin: lingua latīna) is a classical language belonging to the Italic branch of the Indo-European languages.
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Light-year
The light-year is a unit of length used to express astronomical distances and measures about 9.5 trillion kilometres or 5.9 trillion miles.
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Line-of-sight propagation
Line-of-sight propagation is a characteristic of electromagnetic radiation or acoustic wave propagation which means waves travel in a direct path from the source to the receiver.
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Luck
Luck is the experience of notably positive, negative, or improbable events.
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Main sequence
In astronomy, the main sequence is a continuous and distinctive band of stars that appear on plots of stellar color versus brightness.
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Mass transfer
Mass transfer is the net movement of mass from one location, usually meaning stream, phase, fraction or component, to another.
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Medusa
In Greek mythology, Medusa (Μέδουσα "guardian, protectress") was a monster, a Gorgon, generally described as a winged human female with living venomous snakes in place of hair.
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Minute and second of arc
A minute of arc, arcminute (arcmin), arc minute, or minute arc is a unit of angular measurement equal to of one degree.
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Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society (MNRAS) is a peer-reviewed scientific journal covering research in astronomy and astrophysics.
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Nova
A nova (plural novae or novas) or classical nova (CN, plural CNe) is a transient astronomical event that causes the sudden appearance of a bright, apparently "new" star, that slowly fades over several weeks or many months.
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Occultation
An occultation is an event that occurs when one object is hidden by another object that passes between it and the observer.
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Oort cloud
The Oort cloud, named after the Dutch astronomer Jan Oort, sometimes called the Öpik–Oort cloud, is a theoretical cloud of predominantly icy planetesimals proposed to surround the Sun at distances ranging from.
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Orbital period
The orbital period is the time a given astronomical object takes to complete one orbit around another object, and applies in astronomy usually to planets or asteroids orbiting the Sun, moons orbiting planets, exoplanets orbiting other stars, or binary stars.
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Orbital plane (astronomy)
The orbital plane of a revolving body is the geometric plane on which its orbit lies.
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Perseus
In Greek mythology, Perseus (Περσεύς) is the legendary founder of Mycenae and of the Perseid dynasty, who, alongside Cadmus and Bellerophon, was the greatest Greek hero and slayer of monsters before the days of Heracles.
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Perseus (constellation)
Perseus is a constellation in the northern sky, being named after the Greek mythological hero Perseus.
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Perturbation (astronomy)
In astronomy, perturbation is the complex motion of a massive body subject to forces other than the gravitational attraction of a single other massive body.
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Pi Persei
Pi Persei (π Per) is a star in the constellation Perseus.
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Pliny the Elder
Pliny the Elder (born Gaius Plinius Secundus, AD 23–79) was a Roman author, naturalist and natural philosopher, a naval and army commander of the early Roman Empire, and friend of emperor Vespasian.
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PPM Star Catalogue
The PPM Star Catalogue (Positions and Proper Motions Star Catalogue) is the successor of the SAO Catalogue.
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Ptolemy
Claudius Ptolemy (Κλαύδιος Πτολεμαῖος, Klaúdios Ptolemaîos; Claudius Ptolemaeus) was a Greco-Roman mathematician, astronomer, geographer, astrologer, and poet of a single epigram in the Greek Anthology.
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Radial velocity
The radial velocity of an object with respect to a given point is the rate of change of the distance between the object and the point.
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Radio wave
Radio waves are a type of electromagnetic radiation with wavelengths in the electromagnetic spectrum longer than infrared light.
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Rho Persei
Rho Persei (Rho Per, ρ Persei, ρ Per) is a star in the northern constellation of Perseus.
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Roche lobe
The Roche lobe (or Roche limit) is the region around a star in a binary system within which orbiting material is gravitationally bound to that star.
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Royal Society
The President, Council and Fellows of the Royal Society of London for Improving Natural Knowledge, commonly known as the Royal Society, is a learned society.
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Sirius
Sirius (a romanization of Greek Σείριος, Seirios,."glowing" or "scorching") is a star system and the brightest star in the Earth's night sky.
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Smithsonian Astrophysical Observatory Star Catalog
The Smithsonian Astrophysical Observatory Star Catalog is an astrometric star catalogue.
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Solar System
The Solar SystemCapitalization of the name varies.
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Star system
A star system or stellar system is a small number of stars that orbit each other, bound by gravitational attraction.
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Stars and planetary systems in fiction
The planetary systems of stars other than the Sun and the Solar System are a staple element in many works of the science fiction genre.
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Stellar evolution
Stellar evolution is the process by which a star changes over the course of time.
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Stomach (Chinese constellation)
The Stomach mansion (胃宿, pinyin: Wèi Xiù) is one of the twenty-eight mansions of the Chinese constellations.
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Subgiant
A subgiant is a star that is brighter than a normal main-sequence star of the same spectral class, but not as bright as true giant stars.
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Sun
The Sun is the star at the center of the Solar System.
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Sunspot
Sunspots are temporary phenomena on the Sun's photosphere that appear as spots darker than the surrounding areas.
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Tau Persei
Tau Persei (τ Per), also known as 18 Persei, is a binary star in the constellation of Perseus.
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Tetrabiblos
Tetrabiblos (Τετράβιβλος) 'four books', also known in Greek as Apotelesmatiká (Ἀποτελεσματικά) "Effects", and in Latin as Quadripartitum "Four Parts", is a text on the philosophy and practice of astrology, written in the 2nd century AD by the Alexandrian scholar Claudius Ptolemy (AD 90– AD 168).
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Variable star
A variable star is a star whose brightness as seen from Earth (its apparent magnitude) fluctuates.
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Washington Double Star Catalog
The Washington Double Star Catalog, or WDS, is a catalog of double stars, maintained at the United States Naval Observatory.
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X-ray
X-rays make up X-radiation, a form of electromagnetic radiation.
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12 Persei
12 Persei (12 Per) is a double-lined spectroscopic binary star system in the northern constellation Perseus.
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16 Persei
16 Persei (16 Per) is a class F2III (yellow-white giant) star in the constellation Perseus.
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9 Persei
9 Persei is a pulsating variable star in the constellation Perseus.
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Redirects here:
26 Per, 26 Persei, Algol (astronomy), Algol (star), Algol A, Beta Persei, Demon Star, HIP 14576, Β Per, Β Persei.
References
[1] https://en.wikipedia.org/wiki/Algol
