Zuben Elschemali
HIP 74785; Beta Lib; 27 Lib
HIP 74785; Beta Lib; 27 Lib
DoubleStar
Lib
Visible
Level 5
Expert level - Requires steady seeing
Physical Properties
Magnitude
2.61
Spectral Type
B7.5IV
Star Color
Blue-white
(B-V -0.11)
Distance
185.1 ly
Position & Identifiers
RA
15h 17m 00.4s
Dec
-09° 22' 59.0"
Constellation
Lib
HR
5685
HIP
74785
Bayer
Beta
Flamsteed
27 Lib
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Visibility
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Multiple Star System
Separation
2.1″
Companion Mag
16.3
Companion Sp
M2V
Position Angle
194°
Star Colors
A: Blue-white
B: Red
Discoverer
RBR 7
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 2.1″ · PA: 194° · N up, E left
Unresolved · Rayleigh: 2.3″ · Dawes: 1.9″ · Eff: 3.1″
Size Comparison
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Stellar Lifecycle
Spectral Classification
Hertzsprung-Russell Diagram
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Blackbody Spectrum
Stellar Absorption Spectrum
Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.
Stellar Notes
Described by Eratosthenes (ca. 200 B.C.) as brighter than Antares, by Ptolemy (ca. 150 A.D.) as equal to Antares.
Color excess E(B-V) = -0.02.
C1 neutral carbon continuum shows discontinuities in UV.
Zuben Elschemali; Zuben Eschamali; Zuben el Chamali; Zubenesch; Zubenelg; Kiffa Borealis.
Survey Image
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