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Epsilon CrB

HIP 78159; Epsilon CrB; 13 CrB DoubleStar CrB Visible Level 5 Expert level - Requires steady seeing
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Physical Properties

Magnitude 4.15
Spectral Type K2IIIab
Star Color Red (B-V 1.23)
Distance 135.9 ly

Position & Identifiers

RA 15h 57m 35.3s
Dec +26° 52' 40.0"
Constellation CrB
HR 5947
HIP 78159
Bayer Epsilon
Flamsteed 13 CrB
Double Cat 9859

Visibility

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Multiple Star System

Components 3
Component IDs AC
Separation 2.0″
Companion Mag 12.6
Position Angle 13°
Star Colors A: Red
Discoverer AGC 7

Eyepiece View

80x Dawes: 1.9″ TFOV: 0.6°
Realistic = true angular size
N E 13° A (4.2) B (12.6)

Sep: 2.0″ · PA: 13° · 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

Component B, 12.6v at 2", CPM.

Survey Image

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