HIP 109521
HIP 109521
DoubleStar
Lac
Visible
Level 3
Medium telescope (6-8") - Requires steady seeing
Physical Properties
Magnitude
5.40
Spectral Type
A5V
Star Color
Yellow-white
(B-V 0.15)
Distance
407.7 ly
Position & Identifiers
RA
22h 11m 09.9s
Dec
+50° 49' 24.0"
Constellation
Lac
HR
8463
HIP
109521
Double Cat
15708
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Visibility
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Multiple Star System
Components
4
Component IDs
AD
Separation
37.8″
Companion Mag
11.0
Position Angle
286°
Star Colors
A: Yellow-white
Discoverer
HJ 1741
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 37.8″ · PA: 286° · 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
B and C optical. D, K0, CPM.
Survey Image
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