Tau Ari
HIP 15627; Tau1 Ari; 61 Ari
HIP 15627; Tau1 Ari; 61 Ari
DoubleStar
Ari
Visible
Level 5
Expert level - Requires steady seeing
Physical Properties
Magnitude
5.28
Spectral Type
B5IV
Star Color
Blue-white
(B-V -0.07)
Position & Identifiers
RA
03h 21m 13.6s
Dec
+21° 08' 49.0"
Constellation
Ari
HR
1005
HIP
15627
Bayer
Tau1
Flamsteed
61 Ari
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Visibility
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Multiple Star System
Components
3
Component IDs
O
Separation
0.9″
Companion Mag
8.1
Position Angle
217°
Star Colors
A: Blue-white
B: Yellow-white
Discoverer
COU 259
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 0.9″ · PA: 217° · 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
Suspected of being double or triple by Tebbutt in 1893. Components 5.4, 7.9v, sep. 0.15", and 8.4v at 0.67".
Cas-Tau OB1.
Survey Image
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