Tau Ori
HIP 24674; Tau Ori; 20 Ori
DoubleStar
Ori
Visible
Level 3
Medium telescope (6-8") - Requires steady seeing
Physical Properties
Magnitude
3.60
Spectral Type
B6IV
Star Color
Blue-white
(B-V -0.11)
Distance
493.9 ly
Position & Identifiers
RA
05h 17m 36.4s
Dec
-06° 50' 40.0"
Constellation
Ori
HR
1735
HIP
24674
Bayer
Tau
Flamsteed
20 Ori
Double Cat
3877
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Visibility
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Multiple Star System
Components
4
Component IDs
AD
Separation
33.3″
Companion Mag
11.0
Position Angle
251°
Star Colors
A: Blue-white
Discoverer
H 5 25
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 33.3″ · PA: 251° · 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.
Survey Image
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