Miram
Eta Per
Observable Double Star
Excellent (72/100)
Sep: 28.7", Companion: mag 8.5
HIP 13268; Eta Per; 15 Per
DoubleStar
Per
Visible
Level 2
Small telescope (4") - Requires steady seeing
Physical Properties
Magnitude
3.76
Spectral Type
K1III
Star Color
Red
(B-V 1.68)
Temperature
2943 K
Radius
370.1 R☉
Distance
875.8 ly
Position & Identifiers
RA
02h 50m 41.8s
Dec
+55° 53' 44.0"
Constellation
Per
HR
834
HIP
13268
Bayer
Eta
Flamsteed
15 Per
Double Cat
2157
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Visibility
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Multiple Star System
Components
6
Component IDs
AB
Separation
28.7″
Companion Mag
8.5
Companion Sp
B9V
Position Angle
301°
Star Colors
A: Red
B: Blue-white
Discoverer
STF 307
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 28.7″ · PA: 301° · N up, E left
Resolved · Rayleigh: 2.3″ · Dawes: 1.9″ · Eff: 3.1″
Size Comparison
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 B, B9V, CPM, vsini 149k/s.
Large infrared excess.
Red star Pleiades group.
Ultraviolet FeII emission. Also classified K3Ib.
Miram in Becvar; Allen says unnamed.
Survey Image
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