161 relations: Abd al-Rahman al-Sufi, Abzu, Almagest, Alpha Andromedae, Alpha Pegasi, Ancient Greek astronomy, Andromeda (mythology), Andromeda Galaxy, Andromeda–Milky Way collision, Andromedids, Angular diameter, Ap and Bp stars, Apparent magnitude, Arabic, Asterism (astronomy), Astronomical unit, Athena, Babylonian astronomy, Barred spiral galaxy, Beta Andromedae, Beta Pegasi, Biela's Comet, Binary star, Book of Fixed Stars, BY Draconis variable, Caldwell catalogue, Caroline Herschel, Cassiopeia (constellation), Cassiopeia (mythology), Celestial cartography, Celestial equator, Centre de données astronomiques de Strasbourg, Cepheid variable, Cepheus (constellation), Cepheus, King of Aethiopia, Cetus, Cetus (mythology), Chi Piscium, Chinese astronomy, Constellation, Constellation family, Cosmic distance ladder, Crux, Declination, Deep-sky object, Delta Andromedae, Dust lane, Dwarf elliptical galaxy, Dwarf spheroidal galaxy, Edwin Hubble, ..., Epsilon Andromedae, Equatorial coordinate system, Ernst Öpik, Eta Andromedae, Ethiopia, Eugène Joseph Delporte, Exoplanet, F-type main-sequence star, Former constellations, Frederick the Great, Full moon, Galactic plane, Gamma Andromedae, Gamma Pegasi, Giant star, Greek mythology, Guillaume Le Gentil, Honores Friderici, Hydra (constellation), International Astronomical Union, Iota Andromedae, Johann Bayer, Johann Elert Bode, Jupiter, Kappa Andromedae, Lacerta, Lambda Andromedae, Latin, Legs (Chinese constellation), Light-year, List of Andromeda's satellite galaxies, List of fertility deities, Lists of constellations, Local Group, Luminosity, Marduk, Marshall Islands, Medusa, Mesopotamia, Messier 110, Messier 32, Messier object, Metamorphoses, Meteor shower, Minute and second of arc, Mira variable, Mount Wilson Observatory, Mu Andromedae, Mycenae, Nebula, Nereid, NGC 752, NGC 7662, NGC 7686, NGC 891, North Pole, Northern Hemisphere, Nova, Nu Andromedae, Nu Piscium, Omicron Andromedae, Open cluster, Ovid, Pegasus (constellation), Perseus, Perseus (constellation), Phi Persei, Phi Piscium, Pi Andromedae, Pisces (constellation), Planetary nebula, Planetary system, Popular Astronomy (US magazine), Porpoise, Poseidon, Psi Andromedae, Psi Piscium, Ptolemy, R Andromedae, Radiant (meteor shower), Red dwarf, Redshift, Right ascension, Ross 248, Satellite galaxies of the Milky Way, SIMBAD, Simon Marius, Spiral galaxy, Square degree, Star, Star system, Stellar classification, Teen Ta Tseang Keun, The Astronomical Journal, Tiamat, Triangulum, Tuamotus, Upsilon Andromedae, Variable star, Wall (Chinese constellation), William Herschel, Xi Andromedae, Z Andromedae, Zenithal hourly rate, Zeta Andromedae, 14 Andromedae, 14 Andromedae b, 32 Andromedae, 40th parallel south, 51 Andromedae, 56 Andromedae. Expand index (111 more) » « Shrink index
'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.
The Abzu or Apsu (Cuneiform:, ZU.AB; Sumerian: abzu; Akkadian: apsû), also called engur (Cuneiform:, LAGAB×HAL; Sumerian: engur; Akkadian: engurru - lit., ab.
The Almagest is a 2nd-century Greek-language mathematical and astronomical treatise on the apparent motions of the stars and planetary paths, written by Claudius Ptolemy. One of the most influential scientific texts of all time, its geocentric model was accepted for more than 1200 years from its origin in Hellenistic Alexandria, in the medieval Byzantine and Islamic worlds, and in Western Europe through the Middle Ages and early Renaissance until Copernicus.
Alpha Andromedae (α Andromedae, abbreviated Alpha And or α And), also named Alpheratz, is located 97 light-years from the Sun and is the brightest star in the constellation of Andromeda.
Alpha Pegasi (α Pegasi, abbreviated Alpha Peg, α Peg), also named Markab, is the third-brightest star in the constellation of Pegasus and one of the four stars in the asterism known as the Great Square of Pegasus.
Greek astronomy is astronomy written in the Greek language in classical antiquity.
In Greek mythology, Andromeda (Greek: Ἀνδρομέδα, Androméda or Ἀνδρομέδη, Andromédē) is the daughter of the Aethiopian king Cepheus and his wife Cassiopeia.
The Andromeda Galaxy, also known as Messier 31, M31, or NGC 224, is a spiral galaxy approximately 780 kiloparsecs (2.5 million light-years) from Earth, and the nearest major galaxy to the Milky Way.
The Andromeda–Milky Way collision is a galactic collision predicted to occur in about 4 billion years between two galaxies in the Local Group—the Milky Way (which contains the Solar System and Earth) and the Andromeda Galaxy.
The Andromedids meteor shower is associated with Biela's Comet, the showers occurring as Earth passes through old streams left by the comet's tail.
The angular diameter, angular size, apparent diameter, or apparent size is an angular measurement describing how large a sphere or circle appears from a given point of view.
Ap and Bp stars are chemically peculiar stars (hence the "p") of types A and B which show overabundances of some metals, such as strontium, chromium and europium.
The apparent magnitude of a celestial object is a number that is a measure of its brightness as seen by an observer on Earth.
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.
In observational astronomy, an asterism is a popular known pattern or group of stars that are recognised in the night sky.
The astronomical unit (symbol: au, ua, or AU) is a unit of length, roughly the distance from Earth to the Sun.
Athena; Attic Greek: Ἀθηνᾶ, Athēnā, or Ἀθηναία, Athēnaia; Epic: Ἀθηναίη, Athēnaiē; Doric: Ἀθάνα, Athānā or Athene,; Ionic: Ἀθήνη, Athēnē often given the epithet Pallas,; Παλλὰς is the ancient Greek goddess of wisdom, handicraft, and warfare, who was later syncretized with the Roman goddess Minerva.
The history of astronomy in Mesopotamia, and the world, begins with the Sumerians who developed the earliest writing system—known as cuneiform—around 3500–3200 BC.
A barred spiral galaxy is a spiral galaxy with a central bar-shaped structure composed of stars.
Beta Andromedae (β Andromedae, abbreviated Beta And, β And), also named Mirach, is a prominent star in the northern constellation of Andromeda.
Beta Pegasi (β Pegasi, abbreviated Beta Peg, β Peg), also named Scheat, is a red giant star and the second-brightest star (after Epsilon Pegasi) in the constellation of Pegasus.
Biela's Comet or Comet Biela (official designation: 3D/Biela) was a periodic Jupiter-family comet first recorded in 1772 by Montaigne and Messier and finally identified as periodic in 1826 by Wilhelm von Biela.
A binary star is a star system consisting of two stars orbiting around their common barycenter.
The Book of Fixed Stars (كتاب صور الكواكب) is an astronomical text written by Abd al-Rahman al-Sufi (Azophi) around 964.
BY Draconis variables are variable stars of late spectral types, usually K or M, and typically belong to the main sequence.
The Caldwell Catalogue is an astronomical catalogue of 109 star clusters, nebulae, and galaxies for observation by amateur astronomers.
Caroline Lucretia Herschel (16 March 1750 – 9 January 1848) was a German astronomer, whose most significant contributions to astronomy were the discoveries of several comets, including the periodic comet 35P/Herschel–Rigollet, which bears her name.
Cassiopeia is a constellation in the northern sky, named after the vain queen Cassiopeia in Greek mythology, who boasted about her unrivalled beauty.
Cassiopeia (Κασσιόπεια), also Cassiepeia (Κασσιέπεια), is the name of two different figures in Greek mythology.
Celestial cartography, uranography, astrography or star cartography is the fringe of astronomy and branch of cartography concerned with mapping stars, galaxies, and other astronomical objects on the celestial sphere.
The celestial equator is the great circle of the imaginary celestial sphere on the same plane as the equator of Earth.
The Centre de Données astronomiques de Strasbourg (CDS; English translation: Strasbourg Astronomical Data Center) is a data hub which collects and distributes astronomical information.
A Cepheid variable is a type of star that pulsates radially, varying in both diameter and temperature and producing changes in brightness with a well-defined stable period and amplitude.
Cepheus is a constellation in the northern sky, which is named after Cepheus (a King in the Greek mythology).
In Greek mythology, Cepheus (Greek: Κηφεύς Kepheús) is the name of two rulers of Aethiopia, grandfather and grandson.
Cetus is a constellation.
In Ancient Greek, the word kētos (κῆτος, plural kētē or kētea, κήτη or κήτεα)—Latinized as cetus (pl. cetea)—denotes a large fish, a whale, a shark, or a sea monster.
Chi Piscium (χ Piscium) is a solitary, orange-hued star in the zodiac constellation of Pisces.
Astronomy in China has a long history, beginning from the Shang Dynasty (Chinese Bronze Age).
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.
Constellation families are collections of constellations sharing some defining characteristic, such as proximity on the celestial sphere, common historical origin, or common mythological theme.
The cosmic distance ladder (also known as the extragalactic distance scale) is the succession of methods by which astronomers determine the distances to celestial objects.
Crux is a constellation located in the southern sky in a bright portion of the Milky Way.
In astronomy, declination (abbreviated dec; symbol δ) is one of the two angles that locate a point on the celestial sphere in the equatorial coordinate system, the other being hour angle.
Deep-sky object (abbreviated as DSO) is a term designating any astronomical object that is not an individual star or Solar System object (such as Sun, Moon, planet, comet, etc.). The classification is used for the most part by amateur astronomers to denote visually observed faint naked eye and telescopic objects such as star clusters, nebulae and galaxies.
Delta Andromedae (δ And, δ Andromedae) is a multiple star system in the northern constellation of Andromeda.
A dust lane is a relatively dense obscuring band of interstellar dust, observed as a dark swath against the background of a brighter object, especially a galaxy.
Dwarf elliptical galaxies, or dEs, are elliptical galaxies that are smaller than ordinary elliptical galaxies.
A dwarf spheroidal galaxy (dSph) is a term in astronomy applied to small, low-luminosity galaxies with very little dust and an older stellar population.
Edwin Powell Hubble (November 20, 1889 – September 28, 1953) was an American astronomer.
Epsilon Andromedae, Latinized from ε Andromedae, is a star in the constellation of Andromeda.
The equatorial coordinate system is a celestial coordinate system widely used to specify the positions of celestial objects.
Ernst Julius Öpik (– 10 September 1985) was an Estonian astronomer and astrophysicist who spent the second half of his career (1948–1981) at the Armagh Observatory in Northern Ireland.
Eta Andromedae (Eta And, η Andromedae, η And) is a spectroscopic binary star in the constellation of Andromeda.
Ethiopia (ኢትዮጵያ), officially the Federal Democratic Republic of Ethiopia (የኢትዮጵያ ፌዴራላዊ ዲሞክራሲያዊ ሪፐብሊክ, yeʾĪtiyoṗṗya Fēdēralawī Dēmokirasīyawī Rīpebilīk), is a country located in the Horn of Africa.
Eugène Joseph Delporte (10 January 1882 – 19 October 1955) was a Belgian astronomer born in Genappe.
An exoplanet or extrasolar planet is a planet outside our solar system.
An F-type main-sequence star (F V) is a main-sequence, hydrogen-fusing star of spectral type F and luminosity class V. These stars have from 1.0 to 1.4 times the mass of the Sun and surface temperatures between 6,000 and 7,600 K.Tables VII and VIII.
Former constellations are old historical Western constellations that for various reasons are no longer recognized or adopted as official constellations by the International Astronomical Union (IAU).
Frederick II (Friedrich; 24 January 171217 August 1786) was King of Prussia from 1740 until 1786, the longest reign of any Hohenzollern king.
The full moon is the lunar phase when the Moon appears fully illuminated from Earth's perspective.
The galactic plane is the plane on which the majority of a disk-shaped galaxy's mass lies.
Gamma Andromedae (γ Andromedae, abbreviated Gam And, γ And) is the third-brightest point of light in the constellation of Andromeda.
Gamma Pegasi (γ Pegasi, abbreviated Gamma Peg or γ Peg), also named Algenib, is a star in the constellation of Pegasus, located at the southwest corner of the asterism known as the Great Square.
A giant star is a star with substantially larger radius and luminosity than a main-sequence (or dwarf) star of the same surface temperature.
Greek mythology is the body of myths and teachings that belong to the ancient Greeks, concerning their gods and heroes, the nature of the world, and the origins and significance of their own cult and ritual practices.
Guillaume Joseph Hyacinthe Jean-Baptiste Le Gentil de la Galaisière (Coutances, 12 September 1725 – Paris, 22 October 1792) was a French astronomer.
Honores Friderici or Frederici Honores, (Latin, "the Honours, or Regalia, of Frederic") also called Gloria Frederica or Frederici ("Glory of Frederick") was a constellation created by Johann Bode in 1787 to honor Frederick the Great, the king of Prussia who had died in the previous year.
Hydra is the largest of the 88 modern constellations, measuring 1303 square degrees.
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.
Iota Andromedae (ι And, ι Andromedae) is a star in the constellation Andromeda.
Johann Bayer (1572 – 7 March 1625) was a German lawyer and uranographer (celestial cartographer).
Johann Elert Bode (19 January 1747 – 23 November 1826) was a German astronomer known for his reformulation and popularisation of the Titius–Bode law.
Jupiter is the fifth planet from the Sun and the largest in the Solar System.
Kappa Andromedae (κ And, κ Andromedae) is the Bayer designation for a bright star in the constellation of Andromeda.
Lacerta is one of the 88 modern constellations defined by the International Astronomical Union.
Lambda Andromedae (λ And, λ Andromedae) is the Bayer designation for a binary star in the northern constellation of Andromeda.
Latin (Latin: lingua latīna) is a classical language belonging to the Italic branch of the Indo-European languages.
The Legs mansion (奎宿, pinyin: Kuí Xiù) is one of the Twenty-eight mansions of the Chinese constellations.
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.
The Andromeda Galaxy (M31) has satellite galaxies just like the Milky Way.
A fertility deity is a god or goddess associated with sex, fertility, pregnancy, and childbirth.
The following lists of constellations are available.
The Local Group is the galaxy group that includes the Milky Way.
In astronomy, luminosity is the total amount of energy emitted per unit of time by a star, galaxy, or other astronomical object.
Marduk (cuneiform: dAMAR.UTU; Sumerian: amar utu.k "calf of the sun; solar calf"; Greek Μαρδοχαῖος, Mardochaios) was a late-generation god from ancient Mesopotamia and patron deity of the city of Babylon.
The Marshall Islands, officially the Republic of the Marshall Islands (Aolepān Aorōkin M̧ajeļ), is an island country located near the equator in the Pacific Ocean, slightly west of the International Date Line.
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.
Mesopotamia is a historical region in West Asia situated within the Tigris–Euphrates river system, in modern days roughly corresponding to most of Iraq, Kuwait, parts of Northern Saudi Arabia, the eastern parts of Syria, Southeastern Turkey, and regions along the Turkish–Syrian and Iran–Iraq borders.
Messier 110, also known as NGC 205, is a dwarf elliptical galaxy that is a satellite of the Andromeda Galaxy.
Messier 32 (also known as NGC 221) is a dwarf "early-type" galaxy located about 2.65 million light-years from Earth, appearing in the constellation Andromeda.
The Messier objects are a set of 110 astronomical objects, of which 103 were included in lists published by French astronomer Charles Messier in 1771 and 1781.
The Metamorphoses (Metamorphōseōn librī: "Books of Transformations") is a Latin narrative poem by the Roman poet Ovid, considered his magnum opus.
A meteor shower is a celestial event in which a number of meteors are observed to radiate, or originate, from one point in the night sky.
A minute of arc, arcminute (arcmin), arc minute, or minute arc is a unit of angular measurement equal to of one degree.
Mira variables ("Mira", Latin, adj. - feminine form of adjective "wonderful"), named for the prototype star Mira, are a class of pulsating variable stars characterized by very red colours, pulsation periods longer than 100 days, and amplitudes greater than one magnitude in infrared and 2.5 magnitude at visual wavelengths.
The Mount Wilson Observatory (MWO) is an astronomical observatory in Los Angeles County, California, United States.
Mu Andromedae (Mu And, μ Andromedae, μ And) is the Bayer designation for a star in the northern constellation of Andromeda.
Mycenae (Greek: Μυκῆναι Mykēnai or Μυκήνη Mykēnē) is an archaeological site near Mykines in Argolis, north-eastern Peloponnese, Greece.
A nebula (Latin for "cloud" or "fog"; pl. nebulae, nebulæ, or nebulas) is an interstellar cloud of dust, hydrogen, helium and other ionized gases.
In Greek mythology, the Nereids (Νηρηΐδες Nereides, sg. Νηρηΐς Nereis) are sea nymphs (female spirits of sea waters), the 50 daughters of Nereus and Doris, sisters to Nerites.
NGC 752 (also known as Caldwell 28) is an open cluster in the constellation Andromeda.
NGC 7662, also known as the Blue Snowball Nebula or Snowball Nebula, is a planetary nebula located in the constellation Andromeda.
NGC 7686 is a moderate-sized open cluster in the constellation Andromeda, containing about 80 stars.
NGC 891 (also known as Caldwell 23 and Silver Siver Galaxy) is an edge-on unbarred spiral galaxy about 30 million light-years away in the constellation Andromeda.
The North Pole, also known as the Geographic North Pole or Terrestrial North Pole, is (subject to the caveats explained below) defined as the point in the Northern Hemisphere where the Earth's axis of rotation meets its surface.
The Northern Hemisphere is the half of Earth that is north of the Equator.
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.
Nu Andromedae (Nu And, ν Andromedae, ν And) is a binary star in the constellation Andromeda.
Nu Piscium (ν Piscium) is an orange-hued binary star system in the zodiac constellation of Pisces.
Omicron Andromedae (ο And, ο Andromedae) is a star system in the constellation Andromeda.
An open cluster is a group of up to a few thousand stars that were formed from the same giant molecular cloud and have roughly the same age.
Publius Ovidius Naso (20 March 43 BC – 17/18 AD), known as Ovid in the English-speaking world, was a Roman poet who lived during the reign of Augustus.
Pegasus is a constellation in the northern sky, named after the winged horse Pegasus in Greek mythology.
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.
Perseus is a constellation in the northern sky, being named after the Greek mythological hero Perseus.
Phi Persei (Phi Per, φ Persei, φ Per) is a Class B2Vpe, fourth-magnitude star in the constellation Perseus.
Phi Piscium (Phi Psc, φ Piscium, φ Psc) is a binary star system approximately 380 light years away in the constellation Pisces.
Pi Andromedae (Pi And, π Andromedae, π And) is the Bayer designation for a binary star system in the northern constellation of Andromeda.
Pisces is a constellation of the zodiac.
A planetary nebula, abbreviated as PN or plural PNe, is a type of emission nebula consisting of an expanding, glowing shell of ionized gas ejected from red giant stars late in their lives.
A planetary system is a set of gravitationally bound non-stellar objects in or out of orbit around a star or star system.
Popular Astronomy is an American magazine published by John August Media, LLC and hosted at TechnicaCuriosa.com for amateur astronomers.
Porpoises are a group of fully aquatic marine mammals that are sometimes referred to as mereswine, all of which are classified under the family Phocoenidae, parvorder Odontoceti (toothed whales).
Poseidon (Ποσειδῶν) was one of the Twelve Olympians in ancient Greek religion and myth.
Psi Andromedae (ψ And, ψ Andromedae) is the Bayer designation for a triple star system in the northern constellation of Andromeda.
The Bayer designation Psi Piscium (ψ Psc, ψ Piscium) is shared by three star systems in the constellation Pisces.
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.
R Andromedae (R And) is a Mira-type variable star in the constellation Andromeda.
The radiant or apparent radiant of a meteor shower is the point in the sky from which (to a planetary observer) meteors appear to originate.
A red dwarf (or M dwarf) is a small and relatively cool star on the main sequence, of M spectral type.
In physics, redshift happens when light or other electromagnetic radiation from an object is increased in wavelength, or shifted to the red end of the spectrum.
Right ascension (abbreviated RA; symbol) is the angular distance measured only eastward along the celestial equator from the Sun at the March equinox to the (hour circle of the) point above the earth in question.
Ross 248, also called HH Andromedae or Gliese 905, is a small star located approximately from Earth in the northern constellation of Andromeda.
The Milky Way has several smaller galaxies gravitationally bound to it, as part of the Milky Way subgroup, which is part of the local galaxy cluster, the Local Group.
SIMBAD (the Set of Identifications, Measurements, and Bibliography for Astronomical Data) is an astronomical database of objects beyond the Solar System.
Simon Marius (Latinized from German Simon Mayr; January 20, 1573 – January 5, 1625) was a German astronomer.
Spiral galaxies form a class of galaxy originally described by Edwin Hubble in his 1936 work The Realm of the Nebulae(pp. 124–151) and, as such, form part of the Hubble sequence.
A square degree (deg2) is a non-SI-compliant unit measure of solid angle.
A star is type of astronomical object consisting of a luminous spheroid of plasma held together by its own gravity.
A star system or stellar system is a small number of stars that orbit each other, bound by gravitational attraction.
In astronomy, stellar classification is the classification of stars based on their spectral characteristics.
Teen Ta Tseang Keun or Tëen ta tsëang keun meaning "Heaven's Great General",Allen (1963): p.37.
The Astronomical Journal (often abbreviated AJ in scientific papers and references) is a peer-reviewed monthly scientific journal owned by the American Astronomical Society and currently published by IOP Publishing.
In the religion of ancient Babylon, Tiamat (𒀭𒋾𒊩𒆳 or, Greek: Θαλάττη Thaláttē) is a primordial goddess of the salt sea, mating with Abzû, the god of fresh water, to produce younger gods.
Triangulum is a small constellation in the northern sky.
The Tuamotus, also referred to in English as the Tuamotu Archipelago or the Tuamotu Islands (Îles Tuamotu, officially Archipel des Tuamotu), are a French Polynesian chain of almost 80 islands and atolls forming the largest chain of atolls in the world.
Upsilon Andromedae (υ Andromedae, abbreviated Upsilon And, υ And) is a binary star located approximately 44 light-years from Earth in the constellation of Andromeda.
A variable star is a star whose brightness as seen from Earth (its apparent magnitude) fluctuates.
The Wall mansion is one of the Twenty-eight mansions of the Chinese constellations.
Frederick William Herschel, (Friedrich Wilhelm Herschel; 15 November 1738 – 25 August 1822) was a German-born British astronomer, composer and brother of fellow astronomer Caroline Herschel, with whom he worked.
Xi Andromedae (ξ Andromedae, abbreviated Xi And, ξ And), also named Adhil, is a solitary star in the northern constellation of Andromeda.
Z Andromedae is a symbiotic binary star system consisting of a red giant and a white dwarf.
In astronomy, the zenithal hourly rate (ZHR) of a meteor shower is the number of meteors a single observer would see in an hour of peak activity, assumed the conditions are excellent (stars visible up to magnitude 6,5).
Zeta Andromedae (Zeta And, ζ Andromedae, ζ And) is a star system in the constellation Andromeda.
14 Andromedae (abbreviated 14 And), also named Veritate, is an orange giant star of spectral type K0III situated approximately 258 light-years away in the constellation of Andromeda.
14 Andromedae b (abbreviated 14 And b), also named Spe, is an extrasolar planet approximately 249 light years away in the constellation of Andromeda.
32 Andromedae (abbreviated 32 And) is a star in the constellation Andromeda.
The 40th parallel south is a circle of latitude that is 40 degrees south of the Earth's equatorial plane.
51 Andromedae (abbreviated 51 And), also named Nembus, is the 5th brightest (4th magnitude) star in the constellation of Andromeda.
56 Andromedae (abbreviated 56 And) is a double star in the constellation Andromeda.