Beta LMi
HIP 51233; Beta LMi; 31 LMi
DoubleStar
LMi
Visible
Level 5
Expert level - Requires steady seeing
Physical Properties
Magnitude
4.21
Spectral Type
G9IIIab
Star Color
Orange
(B-V 0.90)
Distance
148.2 ly
Position & Identifiers
RA
10h 27m 53.0s
Dec
+36° 42' 26.0"
Constellation
LMi
HR
4100
HIP
51233
Bayer
Beta
Flamsteed
31 LMi
Double Cat
7780
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Visibility
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Multiple Star System
Separation
0.5″
Companion Mag
6.0
Position Angle
231°
Star Colors
A: Orange
Discoverer
HU 879
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 0.5″ · PA: 231° · 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
4.40 G8III-IV, 6.12 F8V, 37.92y, a = 0.340". Combined mag., colors.
ADS 7780A, 37.9y, K 3.2k/s, V0 +5.7k/s, asini 476. Masses 2.1 and 0.5 solar.
0.017".
Survey Image
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