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κ Andromedae
Kappa Andromedae, Latinized from κ Andromedae, also named Kaffalmusalsala, is a star in the northern constellation of Andromeda. It is visible to the naked eye with an apparent visual magnitude of 4.1. Based on the star's ranking on the Bortle Dark-Sky Scale, it is luminous enough to be visible from the suburbs and from urban outskirts, but not from brightly lit inner city regions. Parallax measurements place it at a distance of approximately . It is drifting closer with a radial velocity of −13 km/s, and there is a high likelihood (86%) that it is a member of the Beta Pictoris moving group. The star has one known exoplanet, Kappa Andromedae b. Naming In traditional Arabic astronomy, the stars ι Andromedae, κ Andromedae, and λ Andromedae were known as ''Kaff al-Musalsala'', the hand of the chained woman (i.e. Andromeda), and as ''Ra’s al-Nāqa'', the head of the she-camel. The IAU Working Group on Star Names approved the name Kaffalmusalsala for κ Androme ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Andromeda (constellation)
Andromeda is one of the 48 constellations listed by the 2nd-century Greco-Roman astronomer Ptolemy, and one of the 88 modern constellations. Located in the northern celestial hemisphere, it is named for Andromeda, daughter of Cassiopeia, in the Greek myth, who was chained to a rock to be eaten by the sea monster Cetus. Andromeda is most prominent during autumn evenings in the Northern Hemisphere, along with several other constellations named for characters in the Perseus myth. Because of its northern declination, Andromeda is visible only north of 40° south latitude; for observers farther south, it lies below the horizon. It is one of the largest constellations, with an area of 722 square degrees. This is over 1,400 times the size of the full moon, 55% of the size of the largest constellation, Hydra, and over 10 times the size of the smallest constellation, Crux. Its brightest star, Alpheratz (Alpha Andromedae), is a binary star that has also been counted as a part ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
4 Lacertae
4 Lacertae is a single blue supergiant star in the northern constellation Lacerta, located about 2,600 light years away. This object visible to the naked eye as a white-hued star with an apparent visual magnitude of 4.55. It is moving closer to the Earth with a heliocentric radial velocity of −26 km/s. This star is a suspected member of the Lac OB1 association. This blue supergiant star has a stellar classification of A0 Ib. The surface abundances show evidence of material that has been processed via the CNO cycle at the core. It has ten times the mass of the Sun and has expanded to about 59 times the Sun's radius. The star is around 25 million years old and is spinning with a projected rotational velocity of 28 km/s. It is believed to be a blue loop star that has already spent time as a red supergiant Red supergiants (RSGs) are stars with a supergiant luminosity class ( Yerkes class I) and a stellar classification K or M. They are the largest ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
8 Andromedae
8 Andromedae, abbreviated 8 And, is a probable triple star system in the northern constellation of Andromeda. ''8 Andromedae'' is the Flamsteed designation. It is visible to the naked eye with an apparent visual magnitude of 4.82. Based upon an annual parallax shift of , it is located about 570 light years from the Earth. It is moving closer with a heliocentric radial velocity of −8 km/s. The primary component is an ageing red giant star with a stellar classification of . The suffix notation indicates this is a mild barium star, which means the stellar atmosphere is enriched with s-process elements. It is either a member of a close binary system and has previously acquired these elements from a (now) white dwarf companion or else it is on the asymptotic giant branch and is generating the elements itself. This is a periodic variable of unknown type, changing in brightness with an amplitude of 0.0161 magnitude at a frequency of 0.23354 d−1, or once ev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
7 Andromedae
7 Andromedae, also named Honores, is a single, yellow-white hued star in the northern constellation of Andromeda. ''7 Andromedae'' is the Flamsteed designation, abbreviated 7 And. It is visible to the naked eye with an apparent visual magnitude of 4.52, and is located 80.9 light years from Earth, based on an annual parallax shift of . The star is moving further from the Sun with a heliocentric radial velocity of 12 km/s. This is an ordinary F-type main-sequence star with a stellar classification of F1V, which indicates it is generating energy from hydrogen fusion at its core. This energy is being radiated from its photosphere at the rate of 7.8 times the Sun's luminosity with an effective temperature of 7,380 K. The star has 1.6 times the mass of the Sun and 1.7 times the Sun's girth. 7 Andromedae is 1.1 billion years old and is spinning with a projected rotational velocity of 61 km/s. Within Andromeda it is at the middle of a northerly chain ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
3 Andromedae
3 Andromedae, abbreviated 3 And, is a single star in the northern constellation of Andromeda. ''3 Andromedae'' is the Flamsteed designation. It is visible to the naked eye with an apparent visual magnitude of 4.64. The distance to this star, as determined from an annual parallax shift of , is 181 light years. It is moving closer to the Earth with a heliocentric radial velocity of −35 km/s, and has a relatively large proper motion, traversing the celestial sphere at ·yr−1. This is an evolved giant star with a stellar classification of K0 IIIb, where the 'b' suffix indicated a lower luminosity giant. It is a red clump star, which means it is generating energy through helium fusion at its core. This star has an estimated 1.7 times the mass of the Sun (), and, at the age of 2.3 billion years, has expanded to 10 times the Sun's radius (). It is radiating 49 times the Sun's luminosity from its enlarged photosphere at an effective temperature The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
9 Lacertae
9 Lacertae is a single star in the northern constellation Lacerta, located 172 light years away from Sun. It is visible to the naked eye as a faint, white-hued star with an apparent visual magnitude of 4.64. This object is moving further from the Earth with a heliocentric radial velocity of +10 km/s. This is an A-type main-sequence star with a stellar classification of A9VkA7mA6. This notation indicates it has the Hydrogen lines of an A9 star, the Calcium K line of an A7 star, and the metal lines of an A6. It is 513 million years old with a high projected rotational velocity of 105 km/s. The star has 1.59 times the mass of the Sun and about 2.1 times the Sun's radius. It is radiating 34.6 times the Sun's luminosity from its photosphere at an effective temperature The effective temperature of a body such as a star or planet is the temperature of a black body that would emit the same total amount of electromagnetic radiation. Effective temperature is o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AR Cassiopeiae
AR Cassiopeiae (AR Cas) is a variable star in the constellation of Cassiopeia (constellation), Cassiopeia. It is thought to be a member of a multiple star system, septuple star system, one of only two known star systems with a multiplicity of 7, the other being Nu Scorpii. Nomenclature The multiple star system as a whole has the designations ADS 16795, CCDM J23300+5833, and WDS J23300+5833AB in the Aitken Double Star Catalogue, the Catalogue of Components of Double and Multiple Stars, and the Washington Double Star Catalog respectively. AR Cassiopeiae has been referred to as IH Cas in some literature, looking similar to a variable star designation although not a valid one since the second letter of a variable star designation is always equal to the first or occurs later in the alphabet. The origin of the designation "IH Cassiopeiae" is from the 17th century catalogue and constellation map by Johannes Hevelius, which was kept in use due to the lack of a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tau Cassiopeiae
Tau Cassiopeiae (τ Cassiopeiae) is a solitary, orange hued star in the northern constellation of Cassiopeia. It is bright enough to be seen with the naked eye, having an apparent visual magnitude of +4.86. Based upon an annual parallax shift of 18.75 mas as seen from Earth, this system is located about 174 light years from the Sun. The spectrum of this star indicates it is an evolved, K-type giant star with a stellar classification of K1 IIIa. It is a suspected variable star of unknown type. Tau Cassiopeiae is 3.9 billion years old with about 1.44 times the mass of the Sun and 10 times the Sun's radius. It is radiating 40 times the Sun's luminosity from its expanded photosphere at an effective temperature of around 4,617 K. Naming In Chinese, (), meaning '' Flying Serpent'', refers to an asterism consisting of τ Cassiopeiae, α Lacertae, 4 Lacertae, π2 Cygni, π1 Cygni, HD 206267, ε Cephei, β Lacertae, σ Cassiopeiae, ρ Cassiopeiae, AR ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rho Cassiopeiae
Rho Cassiopeiae (; ρ Cas, ρ Cassiopeiae) is a yellow hypergiant star in the constellation Cassiopeia. It is about distant, yet can still be seen by the naked eye as it is over 300,000 times brighter than the Sun. On average it has an absolute magnitude of −9.5, making it one of the most luminous stars known in visual wavelengths. Its diameter varies between about 300 and 800 times that of the Sun, or 1.4 to 3.7 times the size of Earth's orbit. Louisa Wells discovered that the star's brightness varies, and that discovery was published in 1901. Rho Cassiopeiae is a single star, and is categorized as a semiregular variable. As a yellow hypergiant, it is one of the rarest types of stars. Only a few dozen are known in the Milky Way, but it is not the only one in its constellation which also contains V509 Cassiopeiae. Naming ρ Cassiopeiae is the Bayer designation for this star, often Latinised to Rho Cassiopeiae. It was established in 1603 as part of the '' Uran ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sigma Cassiopeiae
Sigma Cassiopeiae (σ Cas, σ Cassiopeiae) is a binary star in the constellation Cassiopeia (constellation), Cassiopeia. It is 1,200 to from Earth and has a combined apparent magnitude of +4.88, making it visible to the naked eye. The primary component, σ Cassiopeiae A, is a stellar classification, B2 subgiant with an apparent magnitude of +5.0. Its companion, σ Cassiopeiae B, is a stellar classification, B5 main sequence, main sequence dwarf with an apparent magnitude of +7.1. The two stars are three arcseconds apart. Naming In Chinese astronomy, Chinese, (), meaning ''Flying serpent (asterism), Flying Serpent'', refers to an asterism consisting of σ Cassiopeiae, Alpha Lacertae, α Lacertae, 4 Lacertae, Pi2 Cygni, π2 Cygni, Pi1 Cygni, π1 Cygni, HD 206267, Epsilon Cephei, ε Cephei, Beta Lacertae, β Lacertae, Rho Cassiopeiae, ρ Cassiopeiae, Tau Cassiopeiae, τ Cassiopeiae, AR Cassiopeiae, 9 Lacertae, 3 Andromedae, 7 Andromedae, 8 Andromedae, Lambda Andromeda ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beta Lacertae
Beta Lacertae (Beta Lac, β Lacertae, β Lac) is the fourth-brightest star in the constellation of Lacerta. Based upon an annual parallax shift of 19.19 mas, it is 170 light-years distant from Earth. At that distance, the visual magnitude is diminished by an extinction factor of 0.17 due to interstellar dust. This is an evolved G-type giant with an apparent visual magnitude of approximately 4.43. It is a red clump star and the primary component of a suspected binary system, with the pair having an angular separation of 0.2 arcsecond. Naming In Chinese, (), meaning '' Flying Serpent'', refers to an asterism consisting of β Lacertae, α Lacertae, 4 Lacertae, π2 Cygni, π1 Cygni, HD 206267, ε Cephei, σ Cassiopeiae, ρ Cassiopeiae, τ Cassiopeiae, AR Cassiopeiae, 9 Lacertae, 3 Andromedae, 7 Andromedae, 8 Andromedae, λ Andromedae, κ Andromedae, ι Andromedae and ψ Andromedae. Consequently, the Chinese name Chinese may ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Epsilon Cephei
Epsilon Cephei, Latinized from ε Cephei, is a star in the northern constellation of Cepheus. Based upon an annual parallax shift of 38.17 mas as seen from the Earth, it is located about 85 light years from the Sun. The star is visible to the naked eye with an apparent visual magnitude of 4.18. Properties Physical Characteristics This is a yellow-white hued, F-type star with a stellar classification of or F0 IV. Thus it may either be an F-type main sequence star showing an abundance excess of strontium, or it could be a more evolved subgiant star. It is a Delta Scuti variable star that cycles between magnitudes 4.15 and 4.21 every 59.388 minutes. The star displays an infrared excess, indicating the presence of a debris disk with a temperature of 65 K orbiting at a radius of 62 AU. This dust has a combined mass equal to 6.6% of the Earth's mass. Binary There is a faint companion star at an angular separation of along a position an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
