Sigma Tau
HIP 21673; Sigma1 Tau; 91 Tau
Physical Properties
Magnitude
5.07
Spectral Type
A4m
Star Color
Yellow-white
(B-V 0.15)
Distance
155 ly
Position & Identifiers
RA
04h 39m 09.2s
Dec
+15° 47' 59.0"
Constellation
Taurus
(Tau)
HR
1478
HIP
21673
Bayer
Sigma1
Flamsteed
91 Tau
Querying VizieR catalog...
Visibility
Set a location in User Settings to see visibility data.
Size Comparison
Querying VizieR for stellar data…
Compare Stars
Stellar Lifecycle
Spectral Classification
Hertzsprung-Russell Diagram
Loading HR diagram…
Blackbody Spectrum
Stellar Absorption Spectrum
Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.
Stellar Fusion
Stellar Notes
Binary with HR 1479 at 431" and with fainter SB companion, 7.4v at 0.0015".
251.205d, K 5.0k/s, V0 +17.0k/s, asini 16.3. Unresolved by speckle interferometry.
Hyades?
Light Travel Time Machine
Relativistic Travel
Survey Image
Loading survey image…