Phi Tau
Observable Double Star
Good (59/100)
Sep: 48.7", Companion: mag 7.5
HIP 20250; Phi Tau; 52 Tau
DoubleStar
Tau
Visible
Level 2
Small telescope (4") - Requires steady seeing
Physical Properties
Magnitude
4.95
Spectral Type
K1III
Star Color
Red
(B-V 1.15)
Position & Identifiers
RA
04h 20m 21.3s
Dec
+27° 21' 03.0"
Constellation
Tau
HR
1348
HIP
20250
Bayer
Phi
Flamsteed
52 Tau
Double Cat
3137
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Visibility
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Multiple Star System
Separation
48.7″
Companion Mag
7.5
Position Angle
259°
Star Colors
A: Red
Discoverer
SHJ 40
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 48.7″ · PA: 259° · 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
Optical.
Hyades?
Survey Image
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