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Upsilon Tau

HIP 20711; Upsilon Tau; 69 Tau Star Taurus (Tau) Visible Level 2 Small telescope (4")
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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 Taurus (Tau)
HR 1392
HIP 20711
Bayer Upsilon
Flamsteed 69 Tau
Variable ID Ups Tau

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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.

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