Eta Leo
HIP 49583; Eta Leo; 30 Leo
DoubleStar
Leo
Visible
Level 6
Professional/Research - Requires steady seeing
Physical Properties
Magnitude
3.52
Spectral Type
A0Ib
Star Color
Blue-white
(B-V -0.03)
Distance
1263.2 ly
Position & Identifiers
RA
10h 07m 20.0s
Dec
+16° 45' 46.0"
Constellation
Leo
HR
3975
HIP
49583
Bayer
Eta
Flamsteed
30 Leo
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Visibility
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Multiple Star System
Separation
0.4″
Companion Mag
8.4
Position Angle
239°
Star Colors
A: Blue-white
Discoverer
WRH 18
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 0.4″ · PA: 239° · 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
Binary, sep. 0.097", unresolved by speckle interferometry 1982.17.
Sco-Cen assoc.
Large helium abundance due to chromospheric shell. Metal abundance greater than in Sun.
Survey Image
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