20 Leo
HIP 48218; 20 Leo
DoubleStar
Leo
Visible
Level 6
Professional/Research - Requires steady seeing
Physical Properties
Magnitude
6.09
Range
6.08 - 6.12
Period
2.074 days
Variable Type
Alpha2 CVn (Magnetic Rotating)
Spectral Type
A7IVn
Star Color
Yellow-white
(B-V 0.25)
Position & Identifiers
RA
09h 49m 50.1s
Dec
+21° 10' 46.0"
Constellation
Leo
HR
3889
HIP
48218
Flamsteed
20 Leo
Variable ID
DG Leo
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Visibility
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Light Curve
Multiple Star System
Separation
0.2″
Companion Mag
7.3
Position Angle
227°
Star Colors
A: Yellow-white
B: Yellow
Discoverer
KUI 44
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 0.2″ · PA: 227° · 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
Comp. B of visual double, Delta Sct 6.08 - 6.12V, 0.08184505d.
AB, about 200y. B also A8IV.
Comp. A of visual double, 4.1467d, K 101.2k/s, V0 +27.2k/s, msin3i 1.80, asini 5.77. Both components A8IV. Could | be eclipsing. Nearly equal masses. Secondary vsini 30k/s.
Sr enhanced. Also classified A8IVs and F0IIIn.
Survey Image
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