Faster access than browser!Similarities between Alpha Centauri and Sirius
Alpha Centauri and Sirius have 67 things in common (in Unionpedia): Absolute magnitude, Almagest, Apparent magnitude, Apsis, Arcturus, Asterism (astronomy), Astrometry, Astronomical unit, Astronomy & Astrophysics, Bayer designation, Betelgeuse, Binary star, Bright Star Catalogue, Brown dwarf, Canis Major, Canopus, Circumpolar star, Constellation, Daylight, Declination, Durchmusterung, Ecliptic, Edmond Halley, Epoch (astronomy), Friedrich Bessel, Gliese Catalogue of Nearby Stars, Henry Draper Catalogue, Hipparcos, Hubble Space Telescope, IAU Working Group on Star Names, ..., International Astronomical Union, John Herschel, Light-year, List of brightest stars, List of nearest stars and brown dwarfs, Main sequence, Mars, Mercury (planet), Metallicity, Minute and second of arc, Monthly Notices of the Royal Astronomical Society, Nicolas-Louis de Lacaille, Open cluster, Orion (constellation), Parsec, Pollux (star), Precession, Procyon, Proper motion, Ptolemy, Radial velocity, Red dwarf, Rigel, Saturn, Solar sail, Solar System, Spectral line, Star catalogue, Star system, Stellar classification, Stellar evolution, Stellar rotation, Thomas Henderson (astronomer), Uranus, Vega, Venus, Wergaia. Expand index (37 more) »
Absolute magnitude
Absolute magnitude is a measure of the luminosity of a celestial object, on a logarithmic astronomical magnitude scale.
Absolute magnitude and Alpha Centauri · Absolute magnitude and Sirius ·
Almagest
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.
Almagest and Alpha Centauri · Almagest and Sirius ·
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.
Alpha Centauri and Apparent magnitude · Apparent magnitude and Sirius ·
Apsis
An apsis (ἁψίς; plural apsides, Greek: ἁψῖδες) is an extreme point in the orbit of an object.
Alpha Centauri and Apsis · Apsis and Sirius ·
Arcturus
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Alpha Centauri and Arcturus · Arcturus and Sirius ·
Asterism (astronomy)
In observational astronomy, an asterism is a popular known pattern or group of stars that are recognised in the night sky.
Alpha Centauri and Asterism (astronomy) · Asterism (astronomy) and Sirius ·
Astrometry
Astrometry is the branch of astronomy that involves precise measurements of the positions and movements of stars and other celestial bodies.
Alpha Centauri and Astrometry · Astrometry and Sirius ·
Astronomical unit
The astronomical unit (symbol: au, ua, or AU) is a unit of length, roughly the distance from Earth to the Sun.
Alpha Centauri and Astronomical unit · Astronomical unit and Sirius ·
Astronomy & Astrophysics
Astronomy & Astrophysics is a peer-reviewed scientific journal covering theoretical, observational, and instrumental astronomy and astrophysics.
Alpha Centauri and Astronomy & Astrophysics · Astronomy & Astrophysics and Sirius ·
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.
Alpha Centauri and Bayer designation · Bayer designation and Sirius ·
Betelgeuse
Betelgeuse, also designated Alpha Orionis (α Orionis, abbreviated Alpha Ori, α Ori), is the ninth-brightest star in the night sky and second-brightest in the constellation of Orion.
Alpha Centauri and Betelgeuse · Betelgeuse and Sirius ·
Binary star
A binary star is a star system consisting of two stars orbiting around their common barycenter.
Alpha Centauri and Binary star · Binary star and Sirius ·
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.
Alpha Centauri and Bright Star Catalogue · Bright Star Catalogue and Sirius ·
Brown dwarf
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.
Alpha Centauri and Brown dwarf · Brown dwarf and Sirius ·
Canis Major
Canis Major is a constellation in the southern celestial hemisphere.
Alpha Centauri and Canis Major · Canis Major and Sirius ·
Canopus
Canopus, also designated Alpha Carinae (α Carinae, abbreviated Alpha Car, α Car), is the brightest star in the southern constellation of Carina, and the second-brightest star in the night-time sky, after Sirius.
Alpha Centauri and Canopus · Canopus and Sirius ·
Circumpolar star
A circumpolar star is a star, as viewed from a given latitude on Earth, that never sets below the horizon due to its apparent proximity to one of the celestial poles.
Alpha Centauri and Circumpolar star · Circumpolar star and Sirius ·
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.
Alpha Centauri and Constellation · Constellation and Sirius ·
Daylight
Daylight, or the light of day, is the combination of all direct and indirect sunlight during the daytime.
Alpha Centauri and Daylight · Daylight and Sirius ·
Declination
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.
Alpha Centauri and Declination · Declination and Sirius ·
Durchmusterung
In astronomy, Durchmusterung or Bonner Durchmusterung (BD), is the comprehensive astrometric star catalogue of the whole sky, compiled by the Bonn Observatory (Germany) from 1859 to 1903.
Alpha Centauri and Durchmusterung · Durchmusterung and Sirius ·
Ecliptic
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.
Alpha Centauri and Ecliptic · Ecliptic and Sirius ·
Edmond Halley
Edmond (or Edmund) Halley, FRS (–) was an English astronomer, geophysicist, mathematician, meteorologist, and physicist.
Alpha Centauri and Edmond Halley · Edmond Halley and Sirius ·
Epoch (astronomy)
In astronomy, an epoch is a moment in time used as a reference point for some time-varying astronomical quantity, such as the celestial coordinates or elliptical orbital elements of a celestial body, because these are subject to perturbations and vary with time.
Alpha Centauri and Epoch (astronomy) · Epoch (astronomy) and Sirius ·
Friedrich Bessel
Friedrich Wilhelm Bessel (22 July 1784 – 17 March 1846) was a German astronomer, mathematician, physicist and geodesist.
Alpha Centauri and Friedrich Bessel · Friedrich Bessel and Sirius ·
Gliese Catalogue of Nearby Stars
The Gliese Catalogue of Nearby Stars is a modern star catalogue of stars located within 25 parsecs (81.54 ly) of the Earth.
Alpha Centauri and Gliese Catalogue of Nearby Stars · Gliese Catalogue of Nearby Stars and Sirius ·
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.
Alpha Centauri and Henry Draper Catalogue · Henry Draper Catalogue and Sirius ·
Hipparcos
Hipparcos was a scientific satellite of the European Space Agency (ESA), launched in 1989 and operated until 1993.
Alpha Centauri and Hipparcos · Hipparcos and Sirius ·
Hubble Space Telescope
The Hubble Space Telescope (HST) is a space telescope that was launched into low Earth orbit in 1990 and remains in operation.
Alpha Centauri and Hubble Space Telescope · Hubble Space Telescope and Sirius ·
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.
Alpha Centauri and IAU Working Group on Star Names · IAU Working Group on Star Names and Sirius ·
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.
Alpha Centauri and International Astronomical Union · International Astronomical Union and Sirius ·
John Herschel
Sir John Frederick William Herschel, 1st Baronet (7 March 1792 – 11 May 1871) was an English polymath, mathematician, astronomer, chemist, inventor, experimental photographer who invented the blueprint, and did botanical work.
Alpha Centauri and John Herschel · John Herschel and Sirius ·
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.
Alpha Centauri and Light-year · Light-year and Sirius ·
List of brightest stars
This is a list of the brightest naked eye stars to +2.50 magnitude, as determined by their maximum, total, or combined apparent visual magnitudes as seen from Earth.
Alpha Centauri and List of brightest stars · List of brightest stars and Sirius ·
List of nearest stars and brown dwarfs
The following two lists include all the known stars and brown dwarfs that are within of the Sun, or were/will be within in the astronomically near past or future.
Alpha Centauri and List of nearest stars and brown dwarfs · List of nearest stars and brown dwarfs and Sirius ·
Main sequence
In astronomy, the main sequence is a continuous and distinctive band of stars that appear on plots of stellar color versus brightness.
Alpha Centauri and Main sequence · Main sequence and Sirius ·
Mars
Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System after Mercury.
Alpha Centauri and Mars · Mars and Sirius ·
Mercury (planet)
Mercury is the smallest and innermost planet in the Solar System.
Alpha Centauri and Mercury (planet) · Mercury (planet) and Sirius ·
Metallicity
In astronomy, metallicity is used to describe the abundance of elements present in an object that are heavier than hydrogen or helium.
Alpha Centauri and Metallicity · Metallicity and Sirius ·
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.
Alpha Centauri and Minute and second of arc · Minute and second of arc and Sirius ·
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.
Alpha Centauri and Monthly Notices of the Royal Astronomical Society · Monthly Notices of the Royal Astronomical Society and Sirius ·
Nicolas-Louis de Lacaille
Abbé Nicolas-Louis de Lacaille, formerly sometimes spelled de la Caille, (15 March 1713 – 21 March 1762) was a French astronomer.
Alpha Centauri and Nicolas-Louis de Lacaille · Nicolas-Louis de Lacaille and Sirius ·
Open cluster
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.
Alpha Centauri and Open cluster · Open cluster and Sirius ·
Orion (constellation)
Orion is a prominent constellation located on the celestial equator and visible throughout the world.
Alpha Centauri and Orion (constellation) · Orion (constellation) and Sirius ·
Parsec
The parsec (symbol: pc) is a unit of length used to measure large distances to astronomical objects outside the Solar System.
Alpha Centauri and Parsec · Parsec and Sirius ·
Pollux (star)
Pollux, also designated Beta Geminorum (β Geminorum, abbreviated Beta Gem, β Gem), is an orange-hued evolved giant star approximately 34 light-years from the Sun in the northern constellation of Gemini.
Alpha Centauri and Pollux (star) · Pollux (star) and Sirius ·
Precession
Precession is a change in the orientation of the rotational axis of a rotating body.
Alpha Centauri and Precession · Precession and Sirius ·
Procyon
Procyon, also designated Alpha Canis Minoris (α Canis Minoris, abbreviated Alpha CMi, α CMi), is the brightest star in the constellation of Canis Minor.
Alpha Centauri and Procyon · Procyon and Sirius ·
Proper motion
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.
Alpha Centauri and Proper motion · Proper motion and Sirius ·
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.
Alpha Centauri and Ptolemy · Ptolemy and Sirius ·
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.
Alpha Centauri and Radial velocity · Radial velocity and Sirius ·
Red dwarf
A red dwarf (or M dwarf) is a small and relatively cool star on the main sequence, of M spectral type.
Alpha Centauri and Red dwarf · Red dwarf and Sirius ·
Rigel
Rigel, also designated Beta Orionis (β Orionis, abbreviated Beta Ori, β Ori), is generally the seventh-brightest star in the night sky and the brightest star in the constellation of Orion—though periodically it is outshone within the constellation by the variable Betelgeuse.
Alpha Centauri and Rigel · Rigel and Sirius ·
Saturn
Saturn is the sixth planet from the Sun and the second-largest in the Solar System, after Jupiter.
Alpha Centauri and Saturn · Saturn and Sirius ·
Solar sail
Solar sails (also called light sails or photon sails) are a proposed method of spacecraft propulsion using radiation pressure exerted by sunlight on large mirrors.
Alpha Centauri and Solar sail · Sirius and Solar sail ·
Solar System
The Solar SystemCapitalization of the name varies.
Alpha Centauri and Solar System · Sirius and Solar System ·
Spectral line
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.
Alpha Centauri and Spectral line · Sirius and Spectral line ·
Star catalogue
A star catalogue (Commonwealth English) or star catalog (American English), is an astronomical catalogue that lists stars.
Alpha Centauri and Star catalogue · Sirius and Star catalogue ·
Star system
A star system or stellar system is a small number of stars that orbit each other, bound by gravitational attraction.
Alpha Centauri and Star system · Sirius and Star system ·
Stellar classification
In astronomy, stellar classification is the classification of stars based on their spectral characteristics.
Alpha Centauri and Stellar classification · Sirius and Stellar classification ·
Stellar evolution
Stellar evolution is the process by which a star changes over the course of time.
Alpha Centauri and Stellar evolution · Sirius and Stellar evolution ·
Stellar rotation
Stellar rotation is the angular motion of a star about its axis.
Alpha Centauri and Stellar rotation · Sirius and Stellar rotation ·
Thomas Henderson (astronomer)
Thomas Henderson FRSE FRS FRAS (28 December 1798 – 23 November 1844) was a Scottish astronomer and mathematician noted for being the first person to measure the distance to Alpha Centauri, the major component of the nearest stellar system to Earth, the first to determine the parallax of a fixed star, and for being the first Astronomer Royal for Scotland.
Alpha Centauri and Thomas Henderson (astronomer) · Sirius and Thomas Henderson (astronomer) ·
Uranus
Uranus is the seventh planet from the Sun.
Alpha Centauri and Uranus · Sirius and Uranus ·
Vega
Vega, also designated Alpha Lyrae (α Lyrae, abbreviated Alpha Lyr or α Lyr), is the brightest star in the constellation of Lyra, the fifth-brightest star in the night sky, and the second-brightest star in the northern celestial hemisphere, after Arcturus.
Alpha Centauri and Vega · Sirius and Vega ·
Venus
Venus is the second planet from the Sun, orbiting it every 224.7 Earth days.
Alpha Centauri and Venus · Sirius and Venus ·
Wergaia
Wergaia or Werrigia is an indigenous Australian language group in the Wimmera region of north-Western Victoria.
The list above answers the following questions
- What Alpha Centauri and Sirius have in common
- What are the similarities between Alpha Centauri and Sirius
Alpha Centauri and Sirius Comparison
Alpha Centauri has 234 relations, while Sirius has 307. As they have in common 67, the Jaccard index is 12.38% = 67 / (234 + 307).
References
This article shows the relationship between Alpha Centauri and Sirius. To access each article from which the information was extracted, please visit:
