- Mu Aquarii
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μ Aquarii
μ AquariiObservation data
Epoch J2000 Equinox J2000Constellation Aquarius Right ascension 20h 52m 39.2336s Declination −08° 58′ 59.944″ Apparent magnitude (V) 4.723 Characteristics Spectral type A3m U−B color index 0.11 B−V color index 0.32 Astrometry Radial velocity (Rv) -9.1 km/s Proper motion (μ) RA: 47.06 mas/yr
Dec.: -32.91 mas/yrParallax (π) 21.01 ± 1.04 mas Distance 155 ± 8 ly
(48 ± 2 pc)Absolute magnitude (MV) 5.029 Details Mass 3.1 M☉ Radius 2.1 R☉ Luminosity 40 L☉ Temperature 7,500–10,000 K Metallicity ? Rotation 2.31441044 d Age ? years Orbit Companion μ Aquarii B Period (P) 4.8788501 yr Semimajor axis (a) 0.1" Inclination (i) 145° Other designations Database references SIMBAD data Data sources: Hipparcos Catalogue,
CCDM (2002),
Bright Star Catalogue (5th rev. ed.)Mu Aquarii (μ Aqr, μ Aquarii) is a binary star in the constellation Aquarius. It is approximately 155 light years from Earth. It shares the traditional name Albulaan with ν Aquarii. The name derives from an Arabic term al-bulacān (ألبولعان) meaning "the two swallowers". This star, along with ε Aqr (Albali) and ν Aqr (Albulaan), were al Bulaʽ (البلع), the Swallower.[1][2][3]
In Chinese, 奎宿 (Nǚ Sù), meaning Girl (asterism) (or Woman), refers to an asterism consisting of μ Aquarii, ε Aquarii, 4 Aquarii, 5 Aquarii and 3 Aquarii[4]. Consequently, μ Aquarii itself is known as 女宿二 (Nǚ Sù èr, English: the Second Star of Girl / Woman.)[5]
Mu Aquarii is a spectroscopic binary which has a stellar classification of A3m. Its two components have an orbital period of 1782 days and a separation of 0.1 arcseconds.
Location
Aquarius Constellation
References
- ^ Davis Jr., G. A., "The Pronunciations, Derivations, and Meanings of a Selected List of Star Names,"Popular Astronomy, Vol. LII, No. 3, Oct. 1944, p. 12.
- ^ Allen, R. H. (1963). Star Names: Their Lore and Meaning (Reprint ed.). New York: Dover Publications Inc. p. 53. ISBN 0486210790. http://penelope.uchicago.edu/Thayer/E/Gazetteer/Topics/astronomy/_Texts/secondary/ALLSTA/Aquarius*.html. Retrieved 2010-12-12.
- ^ ε Aqr as Nir Saad Bula or Lucida Fortunæ Dissipantis (the brightest of luck of the swallower) and the common name is Albali. μ Aqr and ν Aqr was already designated as the common name Albulaan, the plural form of al Bulaʽ
- ^ (Chinese) 中國星座神話, written by 陳久金. Published by 台灣書房出版有限公司, 2005, ISBN 978-986-7332-25-7.
- ^ (Chinese) AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 5 月 14 日
Stars of Aquarius Bayer Flamsteed 1 • 2 (ε, Albali) • 3 • 4 • 5 • 6 (μ) • 7 • 8 • 9 • 10 • 11 • 12 • 13 (ν) • 14 • 15 • 16 • 17 • 18 • 19 • 20 • 21 • 22 (β, Sadalsuud) • 23 (ξ, Bunda) • 24 • 25 • 26 • 28 • 29 • 30 • 31 (ο) • 32 • 33 (ι) • 34 (α, Sadalmelik) • 35 • 36 • 37 • 38 • 39 • 40 • 41 • 42 • 43 (θ, Ancha) • 44 • 45 • 46 (ρ) • 47 • 48 (γ, Sadachbia) • 49 • 50 • 51 • 52 (π, Seat) • 53 • 54 • 55 (ζ) • 56 • 57 (σ) • 58 • 59 (υ) • 60 • 61 • 62 (η) • 63 (κ, Situla) • 64 • 65 • 66 • 67 • 68 • 69 (τ1) • 70 • 71 (τ2) • 72 • 73 (λ) • 74 • 75 • 76 (δ, Skat) • 77 • 78 • 80 • 82 • 83 • 85 • 86 • 87 • 88 • 89 • 90 (φ) • 91 (ψ1) • 92 (χ) • 93 (ψ2) • 94 • 95 (ψ3) • 96 • 97 • 98 • 99 • 100 • 101 • 102 (ω1) • 103 • 104 • 105 (ω2) • 106 • 107 • 108Categories:- Henry Draper Catalogue objects
- Bayer objects
- Flamsteed objects
- Aquarius constellation
- Spectroscopic binaries
- Type-A stars
- Stars with proper names
- Multiple star stubs
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