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Delta Sagittarii (δ Sagittarii, abbreviated Delta Sgr, δ Sgr), formally named Kaus Media / ˌ k ɔː s ˈ m iː d i ə /, [10] [11] is a star in the southern zodiac constellation of Sagittarius. The apparent visual magnitude of this star is +2.70, [ 2 ] making it easily visible to the naked eye.
Delta Sagittarii (δ Sgr) ("Kaus Meridionalis"), is a K2 spectra star with magnitude 2.71 about 350 light years from Earth. [8] Eta Sagittarii (η Sgr) is a double star with component magnitudes of 3.18 and 10, while Pi Sagittarii (π Sgr) ("Albaldah") [9] is actually a triple system whose components have magnitudes 3.7, 3.8, and 6.0. [8]
γ 2 Sagittarii (Latinised to Gamma 2 Sagittarii) is the star's Bayer designation. It bore the traditional names Alnasl (alternatively Nasl, El Nasl, "al Nasl"), Nushaba (Nash) and Awal al Warida. Alnasl is derived from the Arabic النصل al-naşl and Nushaba is derived from the Arabic Zujj al-Nashshaba, both meaning "arrowhead".
Gamma Sagittarii, Delta Sagittarii and Eta Sagittarii were Al Naʽām al Wārid (النعم الوارد), the 'Going Ostriches'. [20] Gamma Sagittarii and Delta Sagittarii were Akkadian Sin-nun‑tu, or Si-nu-nu‑tum, 'the Swallow'. [20] Kaus Australis is listed in the Babylonian compendium MUL.APIN as MA.GUR 8, meaning "the Bark". [21]
λ Sagittarii (Latinised to Lambda Sagittarii) is the star's Bayer designation. It bore the traditional name Kaus Borealis, which derives from the Arabic قوس qaws 'bow' and Latin boreālis 'northern'. In 2016, the International Astronomical Union organized a Working Group on Star Names (WGSN) [11] to catalog and standardize proper names for ...
Delta Sagittae (Delta Sge, δ Sagittae, δ Sge) is a binary star in the constellation of Sagitta, with an apparent magnitude of +3.68. The primary component is a red M-type bright giant, and the secondary is a B-type main-sequence star. [2] It is approximately 430 light years from Earth, based on its Gaia Data Release 2 parallax. [1]
Sigma Sagittarii has a spectrum matching a stellar classification of B2.5 V, [4] which indicates this is a B-type main-sequence star.Its total luminosity is 3300 [16] times that of the Sun while it has a surface temperature of 18,890 K. [9] X-ray emission has been detected from this star, which has an estimated X-ray luminosity of 1.2 × 10 28 erg s −1.
BD F Star Names and other designations Mag. Ly away Comments ε: 20: Epsilon Sagittarii, Kaus Australis: 1.79: 145: قوس qaws bow + austrālis southern; σ: 34: Sigma Sagittarii, Nunki, Sadira, Pelag [citation needed]