68 relations: A-type main-sequence star, Algol variable, Alpha Delphini, Amateur astronomy, Amphitrite, Apparent magnitude, Aquarius (constellation), Aquila (constellation), Arion, Asterism (astronomy), Astrology in medieval Islam, Aulus Gellius, Beta Delphini, Binary star, Black Tortoise, Celestial equator, Chinese astronomy, Constellation, Constellation family, Delphinus in Chinese astronomy, Delta Delphini, Dolphin, Epsilon Delphini, Equuleus, Gamma Delphini, Gianluca Masi, Gliese Catalogue of Nearby Stars, Globular cluster, Greek mythology, HR Delphini, HU Delphini, International Astronomical Union, Latin, Lesbos, Light-year, Lozenge, Main sequence, Milky Way, Minute and second of arc, Mira variable, Nereid, NGC 6905, NGC 6934, NGC 7006, Niccolò Cacciatore, North Pole, Nova, Palermo Astronomical Observatory, Pegasus (constellation), Planetary nebula, ..., Plutarch, Polynesia, Poseidon, Proper motion, Ptolemy, Pukapuka, Rho Aquilae, Sagitta, Stellar classification, Taranto, Tuamotus, University of Wisconsin–Madison, USS Delphinus (AF-24), USS Pegasus (PHM-1), Vulpecula, William Shakespeare, Yale University Press, 70th parallel south. Expand index (18 more) » « Shrink index
An A-type main-sequence star (A V) or A dwarf star is a main-sequence (hydrogen-burning) star of spectral type A and luminosity class V. These stars have spectra which are defined by strong hydrogen Balmer absorption lines.
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.
Alpha Delphini (α Delphini, abbreviated Alpha Del, α Del) is a multiple star system in the constellation of Delphinus.
Amateur astronomy is a hobby whose participants enjoy observing or imaging celestial objects in the sky using the unaided eye, binoculars, or telescopes.
In ancient Greek mythology, Amphitrite (Ἀμφιτρίτη) was a sea goddess and wife of Poseidon and the queen of the sea.
The apparent magnitude of a celestial object is a number that is a measure of its brightness as seen by an observer on Earth.
Aquarius is a constellation of the zodiac, situated between Capricornus and Pisces.
Aquila is a constellation on the celestial equator.
Arion (Ἀρίων) was a kitharode in ancient Greece, a Dionysiac poet credited with inventing the dithyramb: "As a literary composition for chorus dithyramb was the creation of Arion of Corinth," The islanders of Lesbos claimed him as their native son, but Arion found a patron in Periander, tyrant of Corinth.
In observational astronomy, an asterism is a popular known pattern or group of stars that are recognised in the night sky.
The medieval Muslims took a keen interest in the study of heavens: partly because they considered the celestial bodies to be divine, partly because the dwellers of desert-regions often travelled at night, and relied upon knowledge of the constellations for guidance in their journeys.
Aulus Gellius (c. 125after 180 AD) was a Latin author and grammarian, who was probably born and certainly brought up in Rome.
Beta Delphini (β Delphini, abbreviated Beta Del, β Del) is a binary star in the constellation of Delphinus.
A binary star is a star system consisting of two stars orbiting around their common barycenter.
The Black Tortoise or Black Turtle is one of the Four Symbols of the Chinese constellations.
The celestial equator is the great circle of the imaginary celestial sphere on the same plane as the equator of Earth.
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.
According to traditional Chinese uranography, the modern constellation Delphinus is located within the northern quadrant of the sky, which is symbolized as the Black Tortoise of the North (北方玄武, Běi Fāng Xuán Wǔ).
Delta Delphini, Latinized from δ Delphini, is a binary star in the northern constellation of Delphinus.
Dolphins are a widely distributed and diverse group of aquatic mammals.
Epsilon Delphini (ε Delphini, abbreviated Eps Del, ε Del), also named Aldulfin, is a solitary, blue-white hued star in the northern constellation of Delphinus.
Equuleus is a constellation.
Gamma Delphini, Latinized from γ Delphini, is a binary star system approximately 101 light-years away in the constellation of Delphinus.
Gianluca Masi (born 22 January 1972) is an Italian astrophysicist and astronomer, as well as a discoverer of minor planets and variable stars.
The Gliese Catalogue of Nearby Stars is a modern star catalogue of stars located within 25 parsecs (81.54 ly) of the Earth.
A globular cluster is a spherical collection of stars that orbits a galactic core as a satellite.
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.
HR Delphini (HR Del) was a nova, which appeared in the constellation Delphinus in 1967.
HU Delphini, also known as Gliese 791.2, is a star system in the constellation of Delphinus.
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.
Latin (Latin: lingua latīna) is a classical language belonging to the Italic branch of the Indo-European languages.
Lesbos (Λέσβος), or Lezbolar in Turkish sometimes referred to as Mytilene after its capital, is a Greek island located in the northeastern Aegean Sea.
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.
A lozenge (◊), often referred to as a diamond, is a form of rhombus.
In astronomy, the main sequence is a continuous and distinctive band of stars that appear on plots of stellar color versus brightness.
The Milky Way is the galaxy that contains our Solar System.
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.
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 6905, also known as the Blue Flash Nebula, is a planetary nebula in the constellation Delphinus.
NGC 6934 (also known as Caldwell 47) is a globular cluster in the constellation Delphinus, about 50,000 light years distant.
NGC 7006 (also known as Caldwell 42) is a globular cluster in the constellation Delphinus.
Niccolò Cacciatore (26 January 1770 – 28 January 1841) was an Italian astronomer.
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.
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.
The Giuseppe S. Vaiana Astronomical Observatory is an astronomical observatory located in Palermo, Sicily, Italy, housed inside the Palazzo dei Normanni.
Pegasus is a constellation in the northern sky, named after the winged horse Pegasus in Greek mythology.
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.
Plutarch (Πλούταρχος, Ploútarkhos,; c. CE 46 – CE 120), later named, upon becoming a Roman citizen, Lucius Mestrius Plutarchus, (Λούκιος Μέστριος Πλούταρχος) was a Greek biographer and essayist, known primarily for his Parallel Lives and Moralia.
Polynesia (from πολύς polys "many" and νῆσος nēsos "island") is a subregion of Oceania, made up of more than 1,000 islands scattered over the central and southern Pacific Ocean.
Poseidon (Ποσειδῶν) was one of the Twelve Olympians in ancient Greek religion and myth.
Proper motion is the astronomical measure of the observed changes in the apparent places of stars or other celestial objects in the sky, as seen from the center of mass of the Solar System, compared to the abstract background of the more distant stars.
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.
Pukapuka is a coral atoll in the northern group of the Cook Islands in the Pacific Ocean.
Rho Aquilae, ρ Aquilae, is the Bayer designation for a star in the northern constellation of Delphinus.
Sagitta is a dim but distinctive constellation in the northern sky.
In astronomy, stellar classification is the classification of stars based on their spectral characteristics.
Taranto (early Tarento from Tarentum; Tarantino: Tarde; translit; label) is a coastal city in Apulia, Southern Italy.
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.
The University of Wisconsin–Madison (also known as University of Wisconsin, Wisconsin, UW, or regionally as UW–Madison, or simply Madison) is a public research university in Madison, Wisconsin, United States.
USS Delphinus (AF-24) was built in 1915 as by Workman Clark and Co., Ltd., Belfast, Northern Ireland; acquired by the U.S. Navy 11 August 1942; and commissioned the same day as San Mateo, Lieutenant O. M. Mikkelsen, USNR, in command.
USS Pegasus (PHM-1) was the lead ship of her class of hydrofoils operated by the United States Navy.
Vulpecula is a faint constellation in the northern sky.
William Shakespeare (26 April 1564 (baptised)—23 April 1616) was an English poet, playwright and actor, widely regarded as both the greatest writer in the English language, and the world's pre-eminent dramatist.
Yale University Press is a university press associated with Yale University.
The 70th parallel south is a circle of latitude that is 70 degrees south of the Earth's equatorial plane in the Antarctic.