8 Lac
Observable Double Star
Excellent (67/100)
Sep: 22.5", Companion: mag 6.3
HIP 111546; 8 Lac
DoubleStar
Lac
Visible
Level 1
Naked eye / Binoculars - Requires steady seeing
Physical Properties
Magnitude
5.73
Spectral Type
B2Ve
Star Color
Blue-white
(B-V -0.15)
Position & Identifiers
RA
22h 35m 52.3s
Dec
+39° 38' 03.0"
Constellation
Lac
HR
8603
HIP
111546
Flamsteed
8 Lac
Double Cat
16095
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Visibility
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Multiple Star System
Components
8
Component IDs
AB
Separation
22.5″
Companion Mag
6.3
Companion Sp
B5
Position Angle
186°
Star Colors
A: Blue-white
B: Blue
Discoverer
STF2922
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 22.5″ · PA: 186° · N up, E left
Resolved · 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
ADS 16095A, 4-10y cycles. Emission var. period 16-18y.
AB CPM. B is 6.46V, -0.14(B-V), -0.82(U-B), B2V, vsini 40k/s. All companions listed by Worley are more than 22" from | A. A new companion at 0.042" discovered by speckle interferometry.
Lac OB1.
Shell star.
ADS 16095A, cycles 4-10y.
Survey Image
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