111 Tau
Observable Double Star
Good (53/100)
Sep: 106.7", Companion: mag 8.8
HIP 25278; 111 Tau
DoubleStar
Tau
Visible
Level 2
Small telescope (4") - Requires steady seeing
Physical Properties
Magnitude
4.99
Spectral Type
F8V
Star Color
Yellow
(B-V 0.53)
Distance
48.7 ly
Position & Identifiers
RA
05h 24m 25.4s
Dec
+17° 22' 60.0"
Constellation
Tau
HR
1780
HIP
25278
Flamsteed
111 Tau
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Visibility
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Multiple Star System
Separation
106.7″
Companion Mag
8.8
Position Angle
271°
Star Colors
A: Yellow
B: Orange
Discoverer
S 478
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 106.7″ · PA: 271° · 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.
Stellar Notes
Companion optical.
Survey Image
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