Menkib
Xi Per
HIP 18614; Xi Per; 46 Per
DoubleStar
Per
Visible
Level 5
Expert level - Requires steady seeing
Physical Properties
Magnitude
4.04
Spectral Type
O7.5III(n)((f))
Star Color
White
(B-V 0.01)
Position & Identifiers
RA
03h 58m 57.9s
Dec
+35° 47' 28.0"
Constellation
Per
HR
1228
HIP
18614
Bayer
Xi
Flamsteed
46 Per
Variable ID
Xi Per
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Visibility
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Multiple Star System
Separation
2.4″
Companion Mag
13.9
Position Angle
236°
Star Colors
A: White
Discoverer
TRN 16
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 2.4″ · PA: 236° · 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
Slightly variable, possibly same period as SB.
6.951d.
Color excess E(B-V) = +0.32.
Runaway star from Per OB2. Within 1d and exciting star of HII region S220. Ionizes region at edge of California nebula = | NGC 1499.
Interstellar CO emission. Central Balmer emission in blue-violet only.
Menkib; Menkhib; Menchib.
Survey Image
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