Delta Lib
Excellent (70/100)
HIP 73473; Delta Lib; 19 Lib
VariableStar
Lib
Visible
Level 2
Small telescope (4") - Monitor brightness changes
Physical Properties
Magnitude
4.92
Range
4.9 - 5.9
Period
2.3 days
Variable Type
Eclipsing Binary (Algol-type)
Spectral Type
B9.5V
Star Color
White
(B-V 0.00)
Distance
163 ly
Position & Identifiers
RA
15h 00m 58.4s
Dec
-08° 31' 08.0"
Constellation
Lib
HR
5586
HIP
73473
Bayer
Delta
Flamsteed
19 Lib
Variable ID
Del Lib
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Visibility
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Light Curve
Comparison Stars for Delta Lib (4.9–5.9)
Nearby stable stars for estimating brightness (AAVSO)
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Multiple Star System
Components
4
Component IDs
AC
Separation
69.6″
Companion Mag
12.7
Companion Sp
G5IV
Position Angle
90°
Star Colors
A: White
B: Orange
Discoverer
J 1586
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 Fusion
Stellar Notes
EA 4.92 - 5.90V, 2.32735297d, period may vary. Component A of quadruple system. Contact binary.
2.3273d, K 78.3k/s, V0 -36.4k/s, asini 2.50. Orbital period variable. Masses 2.6, 1.1 solar.
Zuben Elakribi.
Survey Image
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