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Menkalinan

Beta Aur

HIP 28360; Beta Aur; 34 Aur DoubleStar Aur Visible Level 3 Medium telescope (6-8") - Requires steady seeing
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Physical Properties

Magnitude 1.90
Range 1.89 - 1.98
Period 3.960 days
Variable Type Eclipsing Binary (Algol-type)
Spectral Type A1V
Star Color White (B-V 0.03)
Distance 79.5 ly

Position & Identifiers

RA 05h 59m 31.7s
Dec +44° 56' 51.0"
Constellation Aur
HR 2088
HIP 28360
Bayer Beta
Flamsteed 34 Aur
Variable ID Bet Aur
Double Cat 4556

Visibility

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Light Curve

Multiple Star System

Components 3
Component IDs AB
Separation 187.2″
Companion Mag 10.9
Position Angle 42°
Star Colors A: White B: Yellow-white
Discoverer H 6 88

Eyepiece View

32x Dawes: 1.9″ TFOV: 1.6°
Realistic = true angular size
N E 42° A (1.9) B (10.9)

Sep: 187.2″ · PA: 42° · 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

ADS 4556A, EA 1.89 - 1.98V, 1.93 - 2.02B, A2+A2, 3.9600421d, i 78.5d.
AB binary. C, 14.1v at 13".
ADS 4556A, 3.9600d, K 107.5k/s, V0 -17.1k/s, msin3i 2.20, asini 5.85. Masses 2.33, 2.25 solar. Rotational | velocities both components <30k/s. Second SB ever discovered, by Antonia Maury, 1889.
In Ursa cluster; Sirius group; UMa stream; UMa cluster.
Menkalinan; Menkalina.
Radius relative to Sun = 3.0.

Survey Image

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