HIP 18657
HIP 18657
DoubleStar
Per
Visible
Level 5
Expert level - Requires steady seeing
Physical Properties
Magnitude
6.38
Spectral Type
A1Vp:
Star Color
White
(B-V 0.10)
Distance
652.3 ly
Position & Identifiers
RA
03h 59m 40.0s
Dec
+38° 49' 14.0"
Constellation
Per
HR
1229
HIP
18657
Double Cat
2910
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Visibility
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Multiple Star System
Separation
1.4″
Companion Mag
9.1
Position Angle
323°
Star Colors
A: White
B: Yellow
Discoverer
STT 69
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 1.4″ · PA: 323° · 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.
Survey Image
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