HIP 91491
HIP 91491
Star
Lyr
Visible
Level 2
Small telescope (4")
Physical Properties
Magnitude
6.25
Spectral Type
B9V
Star Color
Blue-white
(B-V -0.06)
Position & Identifiers
RA
18h 39m 33.1s
Dec
+40° 56' 06.0"
Constellation
Lyr
HR
7017
HIP
91491
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Visibility
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Multiple Star System
Separation
0.0″
Companion Mag
8.0
Position Angle
136°
Star Colors
A: Blue-white
Discoverer
COU1607
Eyepiece View
15x
Dawes: 1.9″
TFOV: 3.3°
Realistic = true angular size
Sep: 0.0″ · PA: 136° · 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
Sep. 0.14" by Couteau; 0.175" by McAlister et al. from speckle interferometry.
Survey Image
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