Iota Tau
HIP 23497; Iota Tau; 102 Tau
DoubleStar
Tau
Visible
Level 6
Professional/Research - Requires steady seeing
Physical Properties
Magnitude
4.64
Spectral Type
A7V
Star Color
Yellow-white
(B-V 0.16)
Distance
171.7 ly
Position & Identifiers
RA
05h 03m 05.7s
Dec
+21° 35' 24.0"
Constellation
Tau
HR
1620
HIP
23497
Bayer
Iota
Flamsteed
102 Tau
Querying VizieR catalog...
Visibility
Set a location in User Settings to see visibility data.
Multiple Star System
Separation
0.1″
Companion Mag
5.4
Position Angle
-1°
Star Colors
A: Yellow-white
Discoverer
OCC 230
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 0.1″ · PA: -1° · N up, E left
Unresolved · Rayleigh: 2.3″ · Dawes: 1.9″ · Eff: 3.1″
Size Comparison
Querying VizieR for stellar data…
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 Notes
Probable double, 5.4, 5.4v, sep. 0.4".
Hyades cluster; Mel 25 #129.
Survey Image
Loading survey image…