Kappa Tau
HIP 20635; Kappa1 Tau; 65 Tau
Observable Double Star
Good (49/100)
Sep: 339.4", Companion: mag 5.3
HIP 20635; Kappa1 Tau; 65 Tau
DoubleStar
Tau
Visible
Level 1
Naked eye / Binoculars - Requires steady seeing
Physical Properties
Magnitude
4.22
Variable Type
Delta Scuti (Pulsating)
Spectral Type
A7IV-V
Star Color
White
(B-V 0.13)
Distance
130.5 ly
Position & Identifiers
RA
04h 25m 22.1s
Dec
+22° 17' 38.0"
Constellation
Tau
HR
1387
HIP
20635
Bayer
Kappa1
Flamsteed
65 Tau
Double Cat
3201
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Visibility
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Multiple Star System
Components
6
Component IDs
O
Separation
339.4″
Companion Mag
5.3
Position Angle
174°
Star Colors
A: White
Discoverer
STF 541
Eyepiece View
32x
Dawes: 1.9″
TFOV: 1.6°
Realistic = true angular size
Sep: 339.4″ · PA: 174° · 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
Delta Sct?
Kappa1 Tau is occultation double. Together with Kappa2 = HR 1388 they form a multiple system of at least | 6 components.
In Hyades cluster; Mel 25 #54.
Survey Image
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