Psi And
HIP 117221; Psi And; 20 And
DoubleStar
And
Visible
Level 3
Medium telescope (6-8") - Requires steady seeing
Physical Properties
Magnitude
4.95
Spectral Type
G5Ib+A0V
Star Color
Orange
(B-V 1.11)
Distance
3261.6 ly
Position & Identifiers
RA
23h 46m 02.1s
Dec
+46° 25' 13.0"
Constellation
And
HR
9003
HIP
117221
Bayer
Psi
Flamsteed
20 And
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Visibility
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Multiple Star System
Components
4
Component IDs
AD
Separation
24.8″
Companion Mag
14.6
Companion Sp
A0V
Position Angle
218°
Star Colors
A: Orange
B: Blue-white
Discoverer
BU 1532
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 24.8″ · PA: 218° · 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
Component A has composite spectrum but star unresolved by interferometer. vsini of G5 component <19:k/s, A0 component | =<50k/s. Component B, 14.6v at 25"; C, 13.1v at 62".
Survey Image
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