HIP 17954
HIP 17954
DoubleStar
Tau
Visible
Level 5
Expert level - Requires steady seeing
Physical Properties
Magnitude
5.26
Spectral Type
A2V+A5V
Star Color
Yellow-white
(B-V 0.21)
Distance
181.2 ly
Position & Identifiers
RA
03h 50m 18.9s
Dec
+25° 34' 46.0"
Constellation
Tau
HR
1188
HIP
17954
Double Cat
2799
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Visibility
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Multiple Star System
Separation
0.6″
Companion Mag
6.5
Companion Sp
A5V
Position Angle
204°
Star Colors
A: Yellow-white
B: Yellow-white
Discoverer
STT 65
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 0.6″ · PA: 204° · 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
5.81 A3V, 6.21 A5V, 62.28y, a = 0.430". Resolved by speckle interferometry 1983.93, sep. 0.66".
Survey Image
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