20 Eri
HIP 16803; 20 Eri
DoubleStar
Eri
Visible
Level 5
Expert level - Requires steady seeing
Physical Properties
Magnitude
5.23
Range
5.23 - 5.32
Period
46.3 hours
Variable Type
Alpha2 CVn (Magnetic Rotating)
Spectral Type
B9.5p
Star Color
Blue-white
(B-V -0.13)
Distance
233 ly
Position & Identifiers
RA
03h 36m 17.4s
Dec
-17° 28' 01.0"
Constellation
Eri
HR
1100
HIP
16803
Flamsteed
20 Eri
Variable ID
EG Eri
Querying VizieR catalog...
Visibility
Set a location in User Settings to see visibility data.
Light Curve
Multiple Star System
Separation
0.2″
Companion Mag
6.8
Position Angle
92°
Star Colors
A: Blue-white
B: White
Discoverer
HDS 456
Size Comparison
Querying VizieR for stellar data…
Stellar Lifecycle
Spectral Classification
Hertzsprung-Russell Diagram
Loading HR diagram…
Blackbody Spectrum
Stellar Absorption Spectrum
Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.
Stellar Fusion
Stellar Notes
5.23 - 5.32V, amp. 0.11U, 1.93d.
Pleiades group.
Lambda Boo star, Ca, Mg 4481 wk. Formerly classified B9pSi, helium-weak.
Survey Image
Loading survey image…