Menkalinan
Beta Aur
HIP 28360; Beta Aur; 34 Aur
DoubleStar
Aur
Visible
Level 3
Medium telescope (6-8") - Requires steady seeing
Physical Properties
Magnitude
1.90
Range
1.89 - 1.98
Period
4.0 days
Variable Type
Eclipsing Binary (Algol-type)
Spectral Type
A1V
Star Color
White
(B-V 0.03)
Distance
80 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
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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
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 Fusion
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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