Secunda Hyadum
HIP 20455; Delta1 Tau; 61 Tau
HIP 20455; Delta1 Tau; 61 Tau
Star
Tau
Visible
Level 1
Naked eye / Binoculars
Physical Properties
Magnitude
3.76
Spectral Type
G9.5III CN0.5
Star Color
Orange
(B-V 0.98)
Distance
155 ly
Position & Identifiers
RA
04h 22m 56.1s
Dec
+17° 32' 33.0"
Constellation
Tau
HR
1373
HIP
20455
Bayer
Delta1
Flamsteed
61 Tau
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Visibility
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Multiple Star System
Components
3
Component IDs
AB
Separation
112.6″
Companion Mag
13.2
Position Angle
336°
Star Colors
A: Orange
Discoverer
BUP 55
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 Fusion
Stellar Notes
Amp. 0.1V.
529.8d, K 3.0k/s, V0 +39.5k/s, asini 19.8. D. W. Dunham indicates 3.9, 13.0v, sep. 0.04".
In Taurus cluster; Mel 25 #41; the Hyades.
Hyadum II.
Survey Image
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