7 Per
HIP 10729; 7 Per
DoubleStar
Per
Visible
Level 3
Medium telescope (6-8") - Requires steady seeing
Physical Properties
Magnitude
5.98
Spectral Type
G7III
Star Color
Orange
(B-V 1.05)
Position & Identifiers
RA
02h 18m 04.5s
Dec
+57° 30' 60.0"
Constellation
Per
HR
662
HIP
10729
Flamsteed
7 Per
Double Cat
1753
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Visibility
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Multiple Star System
Components
4
Component IDs
AD
Separation
121.9″
Companion Mag
12.3
Position Angle
136°
Star Colors
A: Orange
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 121.9″ · PA: 136° · 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
Heavily reddened.
May not be member of Per OB2.
Sometimes misidentified as Chi Per.
Survey Image
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