Zeta Lyr
HIP 91971; Zeta1 Lyr; 6 Lyr
HIP 91971; Zeta1 Lyr; 6 Lyr
DoubleStar
Lyr
Visible
Level 3
Medium telescope (6-8") - Requires steady seeing
Physical Properties
Magnitude
4.36
Variable Type
Delta Scuti (Pulsating)
Spectral Type
A4m
Star Color
Yellow-white
(B-V 0.19)
Distance
105.2 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
Querying VizieR catalog...
Visibility
Set a location in User Settings to see visibility data.
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
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 22.3″ · PA: 50° · N up, E left
Resolved · Rayleigh: 2.3″ · Dawes: 1.9″ · Eff: 3.1″
Size Comparison
Querying VizieR for stellar data…
Stellar Lifecycle
Spectral Classification
Hertzsprung-Russell Diagram
Loading HR diagram…
Blackbody Spectrum
Stellar Absorption Spectrum
Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.
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
Loading survey image…