- Nu¹ Arae
-
- For other star systems with this Bayer designation, see Nu Arae.
ν1 Arae Observation data
Epoch J2000 Equinox J2000Constellation Ara Right ascension 17h 50m 28.3927s Declination -53° 36′ 44.662″ Apparent magnitude (V) 5.92 Characteristics Spectral type B2/B3Vnn U−B color index -0.64 B−V color index -0.08 Variable type Algol variable Astrometry Radial velocity (Rv) -8 km/s Proper motion (μ) RA: 2.43 mas/yr
Dec.: -10.42 mas/yrParallax (π) 3.96 ± 0.94 mas Distance approx. 800 ly
(approx. 250 pc)Absolute magnitude (MV) 5.84 Details Mass 18 M☉ Radius 7 R☉ Luminosity 2,33588 L☉ Temperature 10,000–30,000 K Rotation 91 Km/s Other designations Database references SIMBAD data Data sources: Hipparcos Catalogue,
CCDM (2002),
Bright Star Catalogue (5th rev. ed.)Database references SIMBAD data Nu1 Arae (ν1 Arae / ν1 Ara) is a triple star system in the constellation of Ara, and approximately 800 light years from the Earth.
The primary component, ν1 Arae A, is detached blue-white B-type main sequence star. The secondary component, ν1 Arae B, is the 9th magnitude. The spectroscopic companion is also blue-white B-type main sequence star. The angular distance of this pair with a separation of 12.3 arcseconds. The mean brightness of the system is 5.67m.
ν1 Arae A itself an spectroscopic eclipsing binary of which both components are which do not fill their Roche lobes. ν1 Arae is an Algol type eclipsing variable star, designated V539 Arae, and its brightness varies from 5.66m to 6.18m with a period equal to the orbital period of the binary, which is 3.17 days.[1]
The system is sometimes referred as Upsilon1 Arae (υ1 Arae), and more generally unlettered.[1]
References
- ^ a b Note for HR 6622: Hoffleit, D., Warren, Jr., W. H., (1991). The Bright Star Catalogue, (5th Revised Ed).
External links
- Centre de Donnees astronomiques de Strasbourg
Bayer Gould 1 G. • 2 G. • 3 G. • 4 G. • 5 G. • 6 G. • 7 G. • 8 G. • 9 G. • 10 G. • 11 G. • 12 G. • 13 G. (η) • 14 G. • 15 G. • 16 G. • 17 G. • 18 G. • 19 G. • 20 G. • 21 G. (ρ¹) • 22 G. • 23 G. (ζ) • 24 G. (ρ²) • 25 G. (ε¹) • 26 G. • 27 G. • 28 G. • 29 G. • 30 G. • 31 G. (ε²) • 32 G. • 33 G. • 34 G. • 35 G. • 36 G. • 37 G. • 38 G. • 39 G. • 40 G. • 41 G. • 42 G. • 43 G. • 44 G. • 45 G. • 46 G. • 47 G. • 48 G. • 49 G. (ι) • 50 G. (γ) • 51 G. (β) • 52 G. • 53 G. (κ) • 54 G. • 55 G. • 56 G. • 57 G. • 58 G. • 59 G. • 60 G. (δ) • 61 G. • 62 G. (α, Choo) • 63 G. • 64 G. • 65 G. • 66 G. • 67 G. (σ) • 68 G. • 69 G. (π) • 70 G. • 71 G. (λ) • 72 G. • 73 G. • 74 G. • 75 G. (μ) • 76 G. • 77 G. (ν¹) • 78 G. (ν²) • 79 G. • 80 G. • 81 G. • 82 G. • 83 G. • 84 G. (θ) • 85Nearby Gliese 674 • Gliese 682 • 41 G.List Categories:- Spectroscopic binaries
- Algol variables
- Ara constellation
- B-type main sequence stars
- Bayer objects
- Henry Draper Catalogue objects
- HIP objects
- HR objects
- Objects named with variable star designations
- Triple star systems
- Multiple star stubs
- Variable star stubs
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