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HD 17918 ...
This is the list of notable stars in the constellation Aries, sorted by decreasing brightness. See also *List of stars by constellation References * * * * * * * {{DEFAULTSORT:List of stars in Aries *List Aries Aries may refer to: *Aries (astrology), an astrological sign *Aries (constellation), a constellation of stars in the zodiac Arts, entertainment and media * ''Aries'' (album), by Luis Miguel, 1993 * ''Aries'' (EP), by Alice Chater, 2020 * "Aries" ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Notability (astronomical Objects)
Notability is the property of being worthy of notice, having fame, or being considered to be of a high degree of interest, significance, or distinction. It also refers to the capacity to be such. Persons who are notable due to public responsibility, accomplishments, or, even, mere participation in the celebrity industry are said to have a public profile. The concept arises in the philosophy of aesthetics regarding aesthetic appraisal.Aesthetic Appraisal', Philosophy (1975), 50: 189–204, Evan Simpson There are criticisms of art galleries determining monetary valuation, or valuation so as to determine what or what not to display, being based on notability of the artist, rather than inherent quality of the art work. Notability arises in decisions on coverage questions in journalism. Marketers and newspapers may try to create notability to create celebrity, fame, or notoriety, or to increase sales, as in the yellow press. The privileged class are sometimes called notables, wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alpha Arietis
Hamal , designation Alpha Arietis (α Arietis, abbreviated Alpha Ari, α Ari), is the brightest star in the northern zodiacal constellation of Aries. With an apparent visual magnitude of 2.0, it is the mean 50th-brightest star in the night sky. Based upon parallax measurements made with the ''Hipparcos'' astrometry satellite, Hamal is about from Earth. It is a giant star that may host an orbiting planet with a mass greater than Jupiter. Nomenclature ''Alpha Arietis'' is the star's Bayer designation. It also bears the Flamsteed designation of 13 Arietis. The traditional name ''Hamal'' (also written ''Hemal'', ''Hamul'', ''Ras Hammel'') derives from the Arabic ''rās al-ħamal'' "head of the ram", in turn from the name for the constellation as a whole, ''Al Ħamal'' "the ram". In 2016, the International Astronomical Union organized a Working Group on Star Names (WGSN) to catalog and standardize proper names for stars. The WGSN's first bulletin of July 2016 included a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Binary Star
A binary star is a system of two stars that are gravitationally bound to and in orbit around each other. Binary stars in the night sky that are seen as a single object to the naked eye are often resolved using a telescope as separate stars, in which case they are called ''visual binaries''. Many visual binaries have long orbital periods of several centuries or millennia and therefore have orbits which are uncertain or poorly known. They may also be detected by indirect techniques, such as spectroscopy (''spectroscopic binaries'') or astrometry (''astrometric binaries''). If a binary star happens to orbit in a plane along our line of sight, its components will eclipse and transit each other; these pairs are called ''eclipsing binaries'', or, together with other binaries that change brightness as they orbit, ''photometric binaries''. If components in binary star systems are close enough they can gravitationally distort their mutual outer stellar atmospheres. In some cases, the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gamma Arietis
Gamma Arietis (γ Arietis, abbreviated Gamma Ari, γ Ari) is a binary star (possibly trinary) in the northern constellation of Aries. The two components are designated γ1 Arietis or Gamma Arietis B and γ2 Arietis or Gamma Arietis A (formally named Mesarthim , the traditional name for the Gamma Arietis system). γ1 Arietis may itself be a spectroscopic binary with a low mass companion. The combined apparent visual magnitude of the stars is 3.86, which is readily visible to the naked eye and makes this the fourth-brightest member of Aries. Based upon parallax measurements obtained during the Hipparcos mission, the distance to Gamma Arietis from the Sun is approximately . Properties The double star nature of this system was discovered by Robert Hooke in 1664. The two components have an angular separation of 7.606 arcseconds, which can be resolved with a small telescope. The orbital period of the pair is greater than 5000 years. The brighter component, γ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
39 Arietis
39 Arietis (abbreviated 39 Ari), officially named Lilii Borea , is a star in the northern constellation of Aries. It is visible to the naked eye with an apparent visual magnitude of +4.5. The distance to this star, as determined from an annual parallax shift of 19.01 mas, is approximately . Nomenclature ''39 Arietis'' is the star's Flamsteed designation. This star was described as ''Lilii Borea'' by Nicolas-Louis de Lacaille in 1757, as a star of the now-defunct constellation of Lilium (the Lily). The words are simply the Latin phrase ''Līliī Boreā'' 'in the north of Lilium'. ''Līliī Austrīnā'' 'in the south of Lilium' was 41 Arietis. In 2016, the International Astronomical Union organized a Working Group on Star Names (WGSN) to catalog and standardize proper names for stars. The WGSN approved the name ''Lilii Borea'' for this star on 5 September 2017 and it is now so included in the List of IAU-approved Star Names. In Chinese, (), meaning ''Stomach'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HD 20644
HD 20644 is a suspected binary star system in the constellation Aries. It has an orange hue and is visible to the naked eye with an apparent visual magnitude of 4.47. The system is located at a distance of approximately 540 light years from the Sun based on parallax, but is drifting closer with a radial velocity of −3 km/s. The visible component is an aging giant star with a stellar classification of K3IIIa Ba0.5, where the suffix notation indicates this is a mild barium star. The atmosphere of this star is enriched with s-process elements that are posited to have been transferred from what is now a white dwarf companion when it evolved along the asymptotic giant branch (AGB). Alternatively, this star may itself be on the AGB. HD 20644 is about 350 million years old with three times the mass of the Sun and is spinning with a projected rotational velocity of 1.4 km/s. With the supply of hydrogen at its core exhausted, it has expanded to 75 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rho3 Arietis
Rho3 Arietis (Rho3 Ari, ρ3 Arietis, ρ3 Ari) is the Bayer designation for a star in the northern constellation of Aries. It is faintly visible to the naked eye with an apparent visual magnitude of 5.63. Based upon an annual parallax shift of 28.29 mas, this star is located at a distance of approximately from Earth. This is an astrometric binary system. The visible component is an F-type main sequence star with a stellar classification of F6 V. It is around 2.4 billion years old and has a high abundance of elements other than hydrogen and helium when compared to the Sun. Name This star, along with δ Ari, ε Ari, ζ Ari, and π Ari, were Al Bīrūnī's ''Al Buṭain'' (ألبطين), the dual of ''Al Baṭn'', the Belly. According to the catalogue of stars in the ''Technical Memorandum 33-507 - A Reduced Star Catalog Containing 537 Named Stars'', ''Al Buṭain'' were the title for five stars : δ Ari as ''Botein'', π Ari as ''Al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pi Arietis
Pi Arietis, Latinized from π Arietis, is the Bayer designation for a multiple star system in the northern constellation of Aries. Based upon parallax measurements made during the Hipparcos mission, this system is approximately distant from Earth and has an apparent visual magnitude of 5.21. This is bright enough to be faintly seen with the naked eye. The primary member of this system is a massive, B-type main sequence star with a stellar classification of B6 V. It is a close spectroscopic binary with an orbital period of 3.854 days, an eccentricity of 0.04, and a combined visual magnitude of 5.30. At an angular separation of 3.28 arcseconds is a magnitude 8.46 A-type main sequence star with a classification of A0 Vp. Finally, a fourth member of the system is a magnitude 11.0 F-type main sequence star with a classification of F8V at an angular separation of 25.2 arcseconds from the primary. Name This star, along with δ Ari, ε Ari, ζ Ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zeta Arietis
Zeta Arietis, Latinized from ζ Arietis, is the Bayer designation for a star in the northern constellation of Aries. It is dimly visible to the naked eye with an apparent visual magnitude of +4.89. Based upon an annual parallax shift of 12.77 mas, the distance to this star is . This is an A-type main sequence star with a stellar classification of A1 V. It has a high rate of rotation with a projected rotational velocity of 133 km/s. The star is shining at an effective temperature of 9,500 K, giving it the characteristic white-hued glow of an A-type star. Name This star, along with δ Ari, ε Ari, π Ari, and ρ3 Ari, were Al Bīrūnī's ''Al Buṭain'' (ألبطين), the dual of ''Al Baṭn'', the Belly. According to the catalogue of stars in the ''Technical Memorandum 33-507 - A Reduced Star Catalog Containing 537 Named Stars'', ''Al Buṭain'' were the title for five stars : δ Ari as ''Botein'', π Ari as ''Al Buṭain I'', ρ3 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Epsilon Arietis
Epsilon Arietis (ε Ari, ε Arietis) is the Bayer designation for a visual binary star system in the northern constellation of Aries. It has a combined apparent visual magnitude of 4.63 and can be seen with the naked eye, although the two components are too close together to be resolved without a telescope. With an annual parallax shift of 9.81 mas, the distance to this system can be estimated as , give or take a 30 light-year margin of error. It is located behind the dark cloud MBM12. The brighter member of this pair has an apparent magnitude of 5.2. At an angular separation of from the brighter component, along a position angle of , is the magnitude 5.5 companion. Both are A-type main sequence stars with a stellar classification of A2 Vs. (The 's' suffix indicates that the absorption lines in the spectrum are distinctly narrow.) In the 2009 ''Catalogue of Ap, HgMn and Am stars'', the two stars have a classification of A3 Ti, indicating they are Ap star ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Delta Arietis
Delta Arietis (δ Arietis, abbreviated Delta Ari, δ Ari), officially named Botein , is a star in the northern constellation of Aries, 1.8 degrees north of the ecliptic. The apparent visual magnitude is 4.35, so it is visible to the naked eye. It has an annual parallax shift of 19.22 mas; corresponding to a distance of about from the Sun. Nomenclature ''δ Arietis'' ( Latinised to ''Delta Arietis'') is the star's Bayer designation. It bore the traditional name ''Botein'' which is derived from Al Bīrūnī's ''Al Buṭayn'' (Arabic: البُطَين), the diminutive of ''Al Baṭn'', "the Belly". This is the name of a star association consisting of this star, Epsilon Arietis, Zeta Arietis, Pi Arietis, and Rho3 Arietis According to a 1971 NASA catalogue of stars, ''Al Buṭain'' was the title for five stars: Delta Arietis (listed as ''Botein''), Pi Arietis (as ''Al Buṭain I''), Rho3 Arietis (''Al Buṭain II''), Epsilon Arietis (''Al Buṭain III'') and Zeta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
41 Arietis
41 Arietis (abbreviated 41 Ari) is a triple star system in the northern constellation of Aries. With an apparent visual magnitude of 3.63, this system is readily visible to the naked eye. It has an annual parallax shift of 19.69 mas, which indicates it is at a distance of from the Sun. The system consists of a binary pair, designated 41 Arietis A, together with a third companion star, 41 Arietis D. (41 Arietis B and C form optical pairs with A, but are not physically related.) The components of A are themselves designated 41 Arietis Aa (formally named Bharani ) and Ab. Nomenclature ''41 Arietis'' is the system's Flamsteed designation. It does not possess a Greek-letter Bayer designation, since this system was once part of the now-obsolete constellation Musca Borealis, but is sometimes designated ''c Arietis''. The designations of the two constituents as ''41 Arietis A'' and ''D'', and those of ''A's'' components - ''41 Arietis Aa'' and ''Ab'' - derive fro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
