HIP 21029
Observable Double Star
Good (44/100)
Sep: 250.3", Companion: mag 6.5
HIP 21029
DoubleStar
Tau
Visible
Level 2
Small telescope (4") - Requires steady seeing
Physical Properties
Magnitude
4.78
Variable Type
Delta Scuti (Pulsating)
Spectral Type
A6IV
Star Color
Yellow-white
(B-V 0.17)
Distance
61.5 ly
Position & Identifiers
RA
04h 30m 33.7s
Dec
+16° 11' 38.0"
Constellation
Tau
HR
1427
HIP
21029
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Visibility
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Multiple Star System
Components
3
Component IDs
O
Separation
250.3″
Companion Mag
6.5
Position Angle
131°
Star Colors
A: Yellow-white
Discoverer
LDS2246
Eyepiece View
32x
Dawes: 1.9″
TFOV: 1.6°
Realistic = true angular size
Sep: 250.3″ · PA: 131° · 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?
Component A of visual pair is occultation double 5.6, 5.6v, sep. 0.02"; component B, 6.7v at 250".
In Hyades cluster; Mel 25 #82.
Survey Image
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