172 relations: Abd al-Rahman al-Sufi, Absolute magnitude, Aeëtes, Almagest, Alpha2 Canum Venaticorum variable, Amun, Andromeda (constellation), Apparent magnitude, Aquarius (constellation), Argonauts, Arietids, Ashvins, Asterism (astronomy), Astronomy in the medieval Islamic world, Athamas, Atlas Coelestis, Atlas of Peculiar Galaxies, Augustin Royer, Axial precession, Babylonian star catalogues, Barred spiral galaxy, Bedouin, Beta Arietis, Binary star, Boeotia, Boundary marker, Bronze Age, Brown dwarf, Bulge (astronomy), Cassiopeia (constellation), Celestial equator, Celestial sphere, Centre de données astronomiques de Strasbourg, Cetus, Chalciope, Chinese astronomy, Colchis, Comet, Constellation, Dardanelles, Declination, Deep-sky object, Delta Arietis, Dumuzid, Dust lane, Dwarf galaxy, Earth mass, Ecliptic, Egyptian astronomy, Elliptical galaxy, ..., Epsilon Arietis, Equatorial coordinate system, Equinox, Eugène Joseph Delporte, Exoplanet, First Point of Aries, Fleur-de-lis, Former constellations, Galaxy merger, Galaxy morphological classification, Gamma Arietis, General Catalogue of Variable Stars, Giant planet, Giant star, Golden Fleece, Granary, Greek mythology, Hamal, Hans Ludendorff, HD 12661, HD 20367, Hebrew astronomy, Helle (mythology), Hellenistic astrology, Hermann Carl Vogel, Hermes, HIP 14810, Hipparchus, Humorism, Indian astronomy, Ino (Greek mythology), International Astronomical Union, Jakob Bartsch, Jason, Jodrell Bank Observatory, Johann Bayer, Johannes Hevelius, John Flamsteed, L 1159-16, Lambda Arietis, Latin, Lenticular galaxy, Light-year, Luminosity, March equinox, Marquesas Islands, Mars, Marshall Islands, Māori people, Meteor shower, Meteoroid, Minute and second of arc, Mira variable, Monthly Notices of the Royal Astronomical Society, Mu Arietis, MUL.APIN, Musca, Musca Borealis, Near-Earth object, Nephele, NGC 772, NGC 935 and IC 1801, North Pole, Nu Arietis, Omicron Arietis, Orion Nebula, Parallax, Perseus (constellation), Petrus Plancius, Phrixus, Pi Arietis, Pisces (constellation), Pleiades, Polynesians, Popular Astronomy (US magazine), Porpoise, Ptolemy, Pythia, Radiant (meteor shower), Radio spectrum, Reionization, Right ascension, Rigveda, Robert Hooke, Satellite galaxies of the Milky Way, Segue 2, Semiregular variable star, Sheep, Sigma Arietis, Silicon, SIMBAD, Spectral line, Spectroscopy, Spiral galaxy, Star, Star formation, Stellar classification, Stellar kinematics, Supernova, Surface brightness, Syria, Taurus (constellation), Teegarden's Star, Triangulum, Tribe of Gad, Tribe of Simeon, Twenty-Eight Mansions, Zenithal hourly rate, Zeta Arietis, Zeus, Zodiac, 14 Arietis, 15 Arietis, 1566 Icarus, 33 Arietis, 35 Arietis, 39 Arietis, 41 Arietis, 53 Arietis, 56 Arietis, 60th parallel south, 7 Arietis. Expand index (122 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.
Absolute magnitude is a measure of the luminosity of a celestial object, on a logarithmic astronomical magnitude scale.
Aeëtes (also spelled Æëtes, Αἰήτης Aiētēs) was a King of Colchis in Greek mythology.
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.
An Alpha2 Canum Venaticorum variable (or α2 CVn variable) is a type of variable star.
Amun (also Amon, Ammon, Amen; Greek Ἄμμων Ámmōn, Ἅμμων Hámmōn) was a major ancient Egyptian deity who appears as a member of the Hermopolitan ogdoad.
Andromeda is one of the 48 constellations listed by the 2nd-century Greco-Roman astronomer Ptolemy and remains one of the 88 modern constellations.
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.
The Argonauts (Ἀργοναῦται Argonautai) were a band of heroes in Greek mythology, who in the years before the Trojan War, around 1300 BC, accompanied Jason to Colchis in his quest to find the Golden Fleece.
The Arietids are a strong meteor shower that lasts from May 22 to July 2 each year, and peaks on June 7.
In observational astronomy, an asterism is a popular known pattern or group of stars that are recognised in the night sky.
Islamic astronomy comprises the astronomical developments made in the Islamic world, particularly during the Islamic Golden Age (9th–13th centuries), and mostly written in the Arabic language.
In Greek mythology, Athamas (Ἀθάμας "rich harvest") was a Boeotian king.
The Atlas Coelestis is a star atlas published posthumously in 1729, based on observations made by the First Astronomer Royal, John Flamsteed.
The Atlas of Peculiar Galaxies is a catalog of peculiar galaxies produced by Halton Arp in 1966.
Augustin Royer was a French architect who lived in the time of Louis XIV.
In astronomy, axial precession is a gravity-induced, slow, and continuous change in the orientation of an astronomical body's rotational axis.
Babylonian astronomy collated earlier observations and divinations into sets of Babylonian star catalogues, during and after the Kassite rule over Babylonia.
A barred spiral galaxy is a spiral galaxy with a central bar-shaped structure composed of stars.
The Bedouin (badawī) are a grouping of nomadic Arab peoples who have historically inhabited the desert regions in North Africa, the Arabian Peninsula, Iraq and the Levant.
Beta Arietis (β Arietis, abbreviated Beta Ari, β Ari), also named Sheratan, is a star system and the second-brightest star in the constellation of Aries, marking the ram's second horn.
A binary star is a star system consisting of two stars orbiting around their common barycenter.
Boeotia, sometimes alternatively Latinised as Boiotia, or Beotia (Βοιωτία,,; modern transliteration Voiotía, also Viotía, formerly Cadmeis), is one of the regional units of Greece.
A boundary marker, border marker, boundary stone, or border stone is a robust physical marker that identifies the start of a land boundary or the change in a boundary, especially a change in direction of a boundary.
The Bronze Age is a historical period characterized by the use of bronze, and in some areas proto-writing, and other early features of urban civilization.
Brown dwarfs are substellar objects that occupy the mass range between the heaviest gas giant planets and the lightest stars, having masses between approximately 13 to 75–80 times that of Jupiter, or approximately to about.
In astronomy, a bulge is a tightly packed group of stars within a larger formation.
Cassiopeia is a constellation in the northern sky, named after the vain queen Cassiopeia in Greek mythology, who boasted about her unrivalled beauty.
The celestial equator is the great circle of the imaginary celestial sphere on the same plane as the equator of Earth.
In astronomy and navigation, the celestial sphere is an abstract sphere with an arbitrarily large radius concentric to 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.
Cetus is a constellation.
Chalciope (Khalkiópē), in Greek mythology, is a name that may refer to several characters.
Astronomy in China has a long history, beginning from the Shang Dynasty (Chinese Bronze Age).
Colchis (კოლხეთი K'olkheti; Greek Κολχίς Kolkhís) was an ancient Georgian kingdom and region on the coast of the Black Sea, centred in present-day western Georgia.
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.
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.
The Dardanelles (Çanakkale Boğazı, translit), also known from Classical Antiquity as the Hellespont (Ἑλλήσποντος, Hellespontos, literally "Sea of Helle"), is a narrow, natural strait and internationally-significant waterway in northwestern Turkey that forms part of the continental boundary between Europe and Asia, and separates Asian Turkey from European Turkey.
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 Arietis (δ Arietis, abbreviated Delta Ari, δ Ari), also named Botein, is a star in the northern constellation of Aries.
Dumuzid, later known by the alternate form Tammuz, was the ancient Mesopotamian god of shepherds, who was also the primary consort of the goddess Inanna (later known as Ishtar).
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.
A dwarf galaxy is a small galaxy composed of about 100 million up to several billion stars, a small number compared to the Milky Way's 200–400 billion stars.
Earth mass (where ⊕ is the standard astronomical symbol for planet Earth) is the unit of mass equal to that of Earth.
The ecliptic is the circular path on the celestial sphere that the Sun follows over the course of a year; it is the basis of the ecliptic coordinate system.
Egyptian astronomy begins in prehistoric times, in the Predynastic Period.
An elliptical galaxy is a type of galaxy having an approximately ellipsoidal shape and a smooth, nearly featureless image.
Epsilon Arietis (ε Ari, ε Arietis) is the Bayer designation for a visual binary star system in the northern constellation of Aries.
The equatorial coordinate system is a celestial coordinate system widely used to specify the positions of celestial objects.
An equinox is commonly regarded as the moment the plane (extended indefinitely in all directions) of Earth's equator passes through the center of the Sun, which occurs twice each year, around 20 March and 22-23 September.
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.
The First Point of Aries, also known as the Cusp of Aries, is the location of the vernal equinox, used as a reference point in celestial coordinate systems.
The fleur-de-lis/fleur-de-lys (plural: fleurs-de-lis/fleurs-de-lys) or flower-de-luce is a stylized lily (in French, fleur means "flower", and lis means "lily") that is used as a decorative design or motif, and many of the Catholic saints of France, particularly St. Joseph, are depicted with a lily.
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).
Galaxy mergers can occur when two (or more) galaxies collide.
Galaxy morphological classification is a system used by astronomers to divide galaxies into groups based on their visual appearance.
Gamma Arietis (γ Arietis, abbreviated Gamma Ari, γ Ari) is a binary star in the northern constellation of Aries.
The General Catalogue of Variable Stars (GCVS) is a list of variable stars.
A giant planet is any massive planet.
A giant star is a star with substantially larger radius and luminosity than a main-sequence (or dwarf) star of the same surface temperature.
In Greek mythology, the Golden Fleece (χρυσόμαλλον δέρας chrysómallon déras) is the fleece of the gold-haired winged ram, which was held in Colchis.
A granary is a storehouse or room in a barn for threshed grain or animal feed.
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.
Hamal, alternatively designated Alpha Arietis (α Arietis, abbreviated Alpha Ari, α Ari), is the brightest star in the northern zodiacal constellation of Aries.
Friedrich Wilhelm Hans Ludendorff (Dunowo, 26 May 1873 - Potsdam, 26 June 1941) was a German astronomer and astrophysicist.
HD 12661 is a G-type main sequence star in the northern constellation of Aries.
Hebrew astronomy refers to any astronomy written in Hebrew or by Hebrew speakers, or translated into Hebrew.
Helle (Ἕλλη), sometimes also called Athamantis (Ἀθαμαντίς), was a character in Greek mythology who figured prominently in the story of Jason and the Argonauts.
Hellenistic astrology is a tradition of horoscopic astrology that was developed and practiced in the late Hellenistic period in and around the Mediterranean region, especially in Egypt.
Hermann Carl Vogel (April 3, 1841 – August 13, 1907) was a German astrophysicist.
Hermes (Ἑρμῆς) is an Olympian god in Greek religion and mythology, the son of Zeus and the Pleiad Maia, and the second youngest of the Olympian gods (Dionysus being the youngest).
HIP 14810 is a G-type main-sequence star located approximately 170 light-years away in the constellation of Aries.
Hipparchus of Nicaea (Ἵππαρχος, Hipparkhos) was a Greek astronomer, geographer, and mathematician.
Humorism, or humoralism, was a system of medicine detailing the makeup and workings of the human body, adopted by Ancient Greek and Roman physicians and philosophers, positing that an excess or deficiency of any of four distinct bodily fluids in a person—known as humors or humours—directly influences their temperament and health.
Indian astronomy has a long history stretching from pre-historic to modern times.
In Greek mythology Ino (Ἰνώ) was a mortal queen of Thebes, who after her death and transfiguration was worshiped as a goddess under her epithet Leucothea, the "white goddess." Alcman called her "Queen of the Sea" (θαλασσομέδουσα), which, if not hyperbole, would make her a doublet of Amphitrite.
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.
Jakob Bartsch or Jacobus Bartschius (c. 1600 – 26 December 1633) was a German astronomer.
Jason (Ἰάσων Iásōn) was an ancient Greek mythological hero who was the leader of the Argonauts whose quest for the Golden Fleece featured in Greek literature.
The Jodrell Bank Observatory (originally the Jodrell Bank Experimental Station, then the Nuffield Radio Astronomy Laboratories from 1966 to 1999) is a British observatory that hosts a number of radio telescopes, and is part of the Jodrell Bank Centre for Astrophysics at the University of Manchester.
Johann Bayer (1572 – 7 March 1625) was a German lawyer and uranographer (celestial cartographer).
Johannes Hevelius Some sources refer to Hevelius as Polish.
John Flamsteed FRS (19 August 1646 – 31 December 1719) was an English astronomer and the first Astronomer Royal.
L 1159-16 is a red dwarf in the northern constellation of Aries.
Lambda Arietis (λ Ari, λ Arietis) is the Bayer designation for a double star in the northern constellation of Aries.
Latin (Latin: lingua latīna) is a classical language belonging to the Italic branch of the Indo-European languages.
A lenticular galaxy (denoted S0) is a type of galaxy intermediate between an elliptical (denoted E) and a spiral galaxy in galaxy morphological classification schemes.
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.
In astronomy, luminosity is the total amount of energy emitted per unit of time by a star, galaxy, or other astronomical object.
The March equinox or Northward equinox is the equinox on the Earth when the subsolar point appears to leave the southern hemisphere and cross the celestial equator, heading northward as seen from Earth.
The Marquesas Islands (Îles Marquises or Archipel des Marquises or Marquises; Marquesan: Te Henua (K)enana (North Marquesan) and Te FenuaEnata (South Marquesan), both meaning "the land of men") are a group of volcanic islands in French Polynesia, an overseas collectivity of France in the southern Pacific Ocean.
Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System after Mercury.
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.
The Māori are the indigenous Polynesian people of New Zealand.
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 meteoroid is a small rocky or metallic body in outer space.
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.
Monthly Notices of the Royal Astronomical Society (MNRAS) is a peer-reviewed scientific journal covering research in astronomy and astrophysics.
Mu Arietis, Latinized from μ Arietis, is the Bayer designation for a star system in the northern constellation of Aries.
MUL.APIN is the conventional title given to a Babylonian compendium that deals with many diverse aspects of Babylonian astronomy and astrology.
Musca is a small constellation in the deep southern sky.
Musca Borealis (Latin for northern fly) was a constellation, now discarded, located between the constellations of Aries and Perseus.
A near-Earth object (NEO) is any small Solar System body whose orbit can bring it into proximity with Earth.
In Greek mythology, Nephele (Νεφέλη, from νέφος nephos "cloud"; Latinized to Nubes) was a cloud nymph who figured prominently in the story of Phrixus and Helle.
NGC 772 (also known as Arp 78) is an unbarred spiral galaxy approximately 130 million light-years away in the constellation Aries.
NGC 935 and IC 1801 are a pair of interacting galaxies within the Aries constellation.
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.
Nu Arietis, Latinized from ν Arietis, is the Bayer designation for a white-hued star in the northern constellation of Aries.
Omicron Arietis, Latinized from ο Arietis, is the Bayer designation for a single, blue-white hued star in the northern constellation of Aries.
The Orion Nebula (also known as Messier 42, M42, or NGC 1976) is a diffuse nebula situated in the Milky Way, being south of Orion's Belt in the constellation of Orion.
Parallax is a displacement or difference in the apparent position of an object viewed along two different lines of sight, and is measured by the angle or semi-angle of inclination between those two lines.
Perseus is a constellation in the northern sky, being named after the Greek mythological hero Perseus.
Petrus Plancius (1552 – May 15, 1622) was a Dutch-Flemish astronomer, cartographer and clergyman.
In Greek mythology Phrixus (also spelt Phryxus; Φρίξος, Phrixos) was the son of Athamas, king of Boeotia, and Nephele (a goddess of clouds).
Pi Arietis, Latinized from π Arietis, is the Bayer designation for a multiple star system in the northern constellation of Aries.
Pisces is a constellation of the zodiac.
The Pleiades (also known as the Seven Sisters and Messier 45), are an open star cluster containing middle-aged, hot B-type stars located in the constellation of Taurus.
The Polynesians are a subset of Austronesians native to the islands of Polynesia that speak the Polynesian languages, a branch of the Oceanic subfamily of the Austronesian language family.
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).
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.
The Pythia (Πῡθίᾱ) was the name of the high priestess of the Temple of Apollo at Delphi who also served as the oracle, commonly known as the Oracle of Delphi.
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.
The radio spectrum is the part of the electromagnetic spectrum with frequencies from 3 Hz to 3 000 GHz (3 THz).
In the field of Big Bang theory, and cosmology, reionization is the process that caused the matter in the universe to reionize after the lapse of the "dark ages".
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.
The Rigveda (Sanskrit: ऋग्वेद, from "praise" and "knowledge") is an ancient Indian collection of Vedic Sanskrit hymns along with associated commentaries on liturgy, ritual and mystical exegesis.
Robert Hooke FRS (– 3 March 1703) was an English natural philosopher, architect and polymath.
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.
Segue 2 is a dwarf spheroidal galaxy situated in the constellation Aries and discovered in 2009 in the data obtained by Sloan Digital Sky Survey.
Semiregular variable stars are giants or supergiants of intermediate and late spectral type showing considerable periodicity in their light changes, accompanied or sometimes interrupted by various irregularities.
Domestic sheep (Ovis aries) are quadrupedal, ruminant mammal typically kept as livestock.
Sigma Arietis, Latinized from σ Arietis, is the Bayer designation for a star in the northern constellation of Aries.
Silicon is a chemical element with symbol Si and atomic number 14.
SIMBAD (the Set of Identifications, Measurements, and Bibliography for Astronomical Data) is an astronomical database of objects beyond the Solar System.
A spectral line is a dark or bright line in an otherwise uniform and continuous spectrum, resulting from emission or absorption of light in a narrow frequency range, compared with the nearby frequencies.
Spectroscopy is the study of the interaction between matter and electromagnetic radiation.
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 star is type of astronomical object consisting of a luminous spheroid of plasma held together by its own gravity.
Star formation is the process by which dense regions within molecular clouds in interstellar space, sometimes referred to as "stellar nurseries" or "star-forming regions", collapse and form stars.
In astronomy, stellar classification is the classification of stars based on their spectral characteristics.
In astronomy, stellar kinematics is the observational study or measurement of the kinematics or motions of stars through space.
A supernova (plural: supernovae or supernovas, abbreviations: SN and SNe) is a transient astronomical event that occurs during the last stellar evolutionary stages of a star's life, either a massive star or a white dwarf, whose destruction is marked by one final, titanic explosion.
In astronomy, surface brightness quantifies the apparent brightness or flux density per unit angular area of a spatially extended object such as a galaxy or nebula, or of the night sky background.
Syria (سوريا), officially known as the Syrian Arab Republic (الجمهورية العربية السورية), is a country in Western Asia, bordering Lebanon and the Mediterranean Sea to the west, Turkey to the north, Iraq to the east, Jordan to the south, and Israel to the southwest.
Taurus (Latin for "the Bull") is one of the constellations of the zodiac, which means it is crossed by the plane of the ecliptic.
Teegarden's Star (SO J025300.5+165258, 2MASS J02530084+1652532, LSPM J0253+1652) is an M-type red dwarf in the constellation Aries, about 12 light-years from the Solar System.
Triangulum is a small constellation in the northern sky.
According to the Hebrew Bible, the Tribe of Gad was one of the Twelve Tribes of Israel who, after the Exodus from Egypt, settled on the eastern side of the Jordan River.
According to the Hebrew Bible, the Tribe of Simeon was one of the twelve tribes of Israel.
The Twenty-Eight Mansions, hsiu, xiu or sieu are part of the Chinese constellations system.
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 Arietis, Latinized from ζ Arietis, is the Bayer designation for a star in the northern constellation of Aries.
Zeus (Ζεύς, Zeús) is the sky and thunder god in ancient Greek religion, who rules as king of the gods of Mount Olympus.
The zodiac is an area of the sky that extends approximately 8° north or south (as measured in celestial latitude) of the ecliptic, the apparent path of the Sun across the celestial sphere over the course of the year.
14 Arietis (abbreviated 14 Ari) is a star in the constellation of Aries.
15 Arietis (abbreviated 15 Ari) is a single variable star in the northern constellation of Aries.
1566 Icarus, provisional designation, is an extremely eccentric asteroid, approximately 1.4 kilometers in diameter.
33 Arietis (abbreviated 33 Arietis) is a binary star in the northern constellation of Aries.
35 Arietis (abbreviated 35 Ari) is a binary star in the northern constellation of Aries.
39 Arietis (abbreviated 39 Ari), also named Lilii Borea, is a star in the northern constellation of Aries.
41 Arietis (abbreviated 41 Ari) is a triple star system in the northern constellation of Aries.
53 Arietis (abbreviated 53 Ari) is a variable star in the northern constellation of Aries.
56 Arietis (abbreviated 56 Ari) is a star in the northern constellation of Aries.
The 60th parallel south is a circle of latitude that is 60 degrees south of the Earth's equatorial plane.
7 Arietis (abbreviated 7 Ari) is a binary star system in the northern constellation of Aries.