72 Tau
HIP 20789; 72 Tau
DoubleStar
Tau
Visible
Level 6
Professional/Research - Requires steady seeing
Physical Properties
Magnitude
5.53
Spectral Type
B7V
Star Color
Blue-white
(B-V -0.10)
Position & Identifiers
RA
04h 27m 17.5s
Dec
+22° 59' 47.0"
Constellation
Tau
HR
1399
HIP
20789
Flamsteed
72 Tau
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Visibility
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Multiple Star System
Separation
0.1″
Companion Mag
6.2
Position Angle
-1°
Star Colors
A: Blue-white
Discoverer
OCC 309
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 0.1″ · PA: -1° · 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
On nomenclature see HR 1392.
Survey Image
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