Zeta Lyr
HIP 91971; Zeta1 Lyr; 6 Lyr
HIP 91971; Zeta1 Lyr; 6 Lyr
Star
Lyr
Visible
Level 2
Small telescope (4")
Physical Properties
Magnitude
4.36
Range
4.34 - 4.35
Period
4.3 days
Variable Type
Ellipsoidal Variable
Spectral Type
A4m
Star Color
Yellow-white
(B-V 0.19)
Distance
105 ly
Position & Identifiers
RA
18h 44m 46.4s
Dec
+37° 36' 18.0"
Constellation
Lyr
HR
7056
HIP
91971
Bayer
Zeta1
Flamsteed
6 Lyr
Double Cat
11639
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Visibility
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Light Curve
Multiple Star System
Components
5
Component IDs
AD
Separation
22.3″
Companion Mag
15.8
Position Angle
50°
Star Colors
A: Yellow-white
B: Yellow-white
Discoverer
BU 968
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
Delta Sct?
CPM with HR 7057 = ADS 11639D. Other components optical.
4.2999d, K 51.2k/s, V0 -26.0k/s, asini 3.03.
Carbon and scandium deficient; strontium, zirconium, barium and europium overabundant. Also classified A7IVms | (variable spectrum) and Am(A5/F0V/F3).
Survey Image
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