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Tau Lib

HIP 76600; Tau Lib; 40 Lib Star Libra (Lib) Visible Level 1 Naked eye / Binoculars
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Physical Properties

Magnitude 3.66
Spectral Type B2.5 V
Star Color Blue (B-V -0.17)
Distance 367 ly

Position & Identifiers

RA 15h 38m 39.4s
Dec -29° 46' 40.0"
Constellation Libra (Lib)
HR 5812
HIP 76600
Bayer Tau
Flamsteed 40 Lib

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Stellar Notes

Sco OB2; Sco-Cen assoc.; probable member of Sco-Cen cluster; upper Sco region.
A Perkins Obs. spectrogram May 8, 1962 showed two spectra, sep. 200k/s, B3V, vsini 149k/s and B5:, vsini 100:k/s.

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