HIP 21251
Physical Properties
Magnitude
6.25
Spectral Type
B9IVn
Star Color
White
(B-V 0.07)
Distance
1,631 ly
Position & Identifiers
RA
04h 33m 32.9s
Dec
+18° 00' 60.0"
Constellation
Taurus
(Tau)
HR
1442
HIP
21251
Double Cat
3297
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Visibility
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Multiple Star System
Separation
2.9″
Companion Mag
7.0
Position Angle
277°
Star Colors
A: White
B: Yellow-white
Discoverer
STF 559
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 2.9″ · PA: 277° · N up, E left
Resolved · Rayleigh: 2.3″ · Dawes: 1.9″ · Eff: 2.3″
Size Comparison
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Stellar Lifecycle
Spectral Classification
Hertzsprung-Russell Diagram
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Blackbody Spectrum
Stellar Absorption Spectrum
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Stellar Fusion
Stellar Notes
Binary. No change after 113y.
Light Travel Time Machine
Relativistic Travel
Survey Image
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