what type of star is algiedi

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The Washington Double Star Catalog", https://en.wikipedia.org/w/index.php?title=Delta_Capricorni&oldid=975410994, Articles with Chinese-language sources (zh), Articles with unsourced statements from January 2018, Articles containing Chinese-language text, Creative Commons Attribution-ShareAlike License, This page was last edited on 28 August 2020, at 10:43.
[21] This refers to its presence among an asterism known as 'The Line of Ramparts', which also includes Kappa Capricorni, Epsilon Capricorni, Gamma Capricorni, Iota Aquarii, Lambda Aquarii, Sigma Aquarii, Phi Aquarii, 27 Piscium, 29 Piscium, 33 Piscium and 30 Piscium. The location of the supergiant star in the night sky is determined by the Right Ascension (R. Physical Properties of Algiedi Prima. Fixed star Deneb Algedi, Delta Capricorni, is a 2.8 magnitude binary star system in the Tail of the Sea Goat, Capricornus Constellation. [22], In 1906 astronomer Vesto Slipher of Lowell Observatory discovered that Delta Capricorni A was a spectroscopic binary. A fifteenth magnitude star is one arcminute away, and a thirteenth magnitude star is over two arcminutes away from the primary star and that distance is increasing.[33]. Deneb Algedi (or Deneb Algiedi), Scheddi, δ Cap, 49 Capricorni, "del Cap -- Eclipsing binary of Algol type", Monthly Notices of the Royal Astronomical Society, "WG Triennial Report (2015–2018) – Star Names", "The 2001 US Naval Observatory Double Star CD-ROM. When the primary is eclipsing the secondary, the magnitude decreases by 0.09. When the primary is eclipsing the secondary, the magnitude decreases by 0.09. [16], The system bore the traditional names Deneb Algedi, derived from the Arabic ذنب الجدي (ðanab al-jady), meaning "the tail of the goat", referring to the fishlike tail of the celestial sea-goat Capricorn, and Scheddi. [citation needed], δ Capricorni (Latinised to Delta Capricorni) is the system's Bayer designation. Star Facts: Deneb Algedi • Constellation: Capricornus • Coordinates: RA: 21h 47m 02.44424s|Dec: -16° 07′ 38.2335? • Distance: 38.70 light years • Star Type: kA5hF0mF2III + A7m III • Mass: d Cap A (2 sol) | d Cap B (0.73 sol) • Radius: d Cap A (1.91 sol) | … More specifically, this is a chemically-peculiar Am star with a spectral type of kA5hF0mF2 III under the revised MK system. It is visible to the naked eye with an apparent visual magnitude of +3.57. [32] The secondary component is a G-type or K-type star with around 90% of the mass of the Sun. [10] (This rotation rate is synchronous with the orbital period.) [31], Delta Capricorni A is an Algol-type eclipsing binary star, with an orbital period of 1.022768 days and an inclination close to the line of sight from the Earth. It is separated from the fainter α¹ Capricorni by 0.11° of the sky, a gap just resolvable with the naked eye, similar to Mizar and Alcor. [12] The peak apparent visual magnitude of the pair is 2.81. [31] The outer envelope of the star is radiating energy at an effective temperature of 7,301 K,[9] giving it the white-hued glow of an A-type star. [15], In Chinese astronomy, Delta Capricorni is known as 壘壁陣四 (Lěi Bì Zhèn sì), meaning 'The Fourth Star of the Line of Ramparts'. [4] This notation indicates that the calcium K-line matches the temperature of an A5 star, the hydrogen spectral type matches an F0 star, and the metallic absorption lines match an F2 star.
Delta Capricorni is 2.6 degrees south of the ecliptic and can be occulted by the Moon, and (rarely) by planets. According to astrology, Delta Capricorni's representation of a flexible tail is reflected in its association with both good and bad fortune alike. This categorization was brought into question during observations in 1994 and it is most likely not inherently variable. Binary star in the constellation Capricornus. Deneb Algedi is the 1st brightest star in Capricornus based on the Hipparcos 2007 apparent magnitude.

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