90 Leo
Observable Double Star
Good (59/100)
Sep: 3.1", Companion: mag 7.3
HIP 56473; 90 Leo
DoubleStar
Leo
Visible
Level 3
Medium telescope (6-8") - Requires steady seeing
Physical Properties
Magnitude
5.95
Spectral Type
B4V
Star Color
Blue
(B-V -0.16)
Distance
1087.2 ly
Position & Identifiers
RA
11h 34m 42.5s
Dec
+16° 47' 49.0"
Constellation
Leo
HR
4456
HIP
56473
Flamsteed
90 Leo
Double Cat
8220
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Visibility
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Multiple Star System
Components
3
Component IDs
AB
Separation
3.1″
Companion Mag
7.3
Companion Sp
B9V
Position Angle
209°
Star Colors
A: Blue
B: Blue-white
Discoverer
STF1552
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 3.1″ · PA: 209° · 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
AB binary. Combined mag., colors. B is B6. C, 9.64V F5 at 63".
ADS 8220B.
Survey Image
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