HIP 20804
HIP 20804
DoubleStar
Tau
Visible
Level 5
Expert level - Requires steady seeing
Physical Properties
Magnitude
5.88
Spectral Type
B8IV
Star Color
White
(B-V 0.05)
Distance
1087.2 ly
Position & Identifiers
RA
04h 27m 28.8s
Dec
+11° 12' 45.0"
Constellation
Tau
HR
1402
HIP
20804
Double Cat
3228
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Visibility
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Multiple Star System
Separation
0.1″
Companion Mag
7.9
Position Angle
69°
Star Colors
A: White
Discoverer
BU 1186
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 0.1″ · PA: 69° · 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
Period possibly 19.83d or 20.43d.
Survey Image
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