Upsilon Tau
HIP 20711; Upsilon Tau; 69 Tau
Star
Tau
Visible
Level 2
Small telescope (4")
Physical Properties
Magnitude
4.28
Range
4.28 - 4.31
Period
3.6 hours
Variable Type
Delta Scuti (Low Amplitude)
Spectral Type
A8Vn
Star Color
Yellow-white
(B-V 0.26)
Distance
91 ly
Position & Identifiers
RA
04h 26m 18.5s
Dec
+22° 48' 49.0"
Constellation
Tau
HR
1392
HIP
20711
Bayer
Upsilon
Flamsteed
69 Tau
Variable ID
Ups Tau
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Visibility
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Light Curve
Multiple Star System
Components
3
Separation
116.0″
Companion Mag
13.2
Star Colors
A: Yellow-white
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
The visual primary is SB, 4.6, 6.5v, sep. 0.020". Component B, 12.5v at 110".
In Hyades cluster; Mel 25 #60.
Some sources call this Upsilon1 and HR 1399 Upsilon2 Tau; other catalogues reverse these designations. The | superscripts now rarely used and Upsilon retained for 69 Tau.
Survey Image
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