18 Tau

HIP 17527; 18 Tau DoubleStar Tau Visible Level 3 Medium telescope (6-8") - Requires steady seeing

Star Map Add to List Add to Plan Back to Catalog

Physical Properties

Magnitude 5.64

Spectral Type B8V

Star Color Blue-white (B-V -0.07)

Position & Identifiers

RA 03h 45m 09.7s

Dec +24° 50' 21.0"

Constellation Tau

HR 1144

HIP 17527

Flamsteed 18 Tau

Visibility

Set a location in User Settings to see visibility data.

Multiple Star System

Separation 72.7″

Companion Mag 14.0

Position Angle 129°

Star Colors A: Blue-white

Discoverer HL 8

Eyepiece View

Telescope Eyepiece

80x Dawes: 1.9″ TFOV: 0.6°

Seeing

Scale Realistic = true angular size

Sep: 72.7″ · PA: 129° · N up, E left

Resolved · 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

Group/Cluster

Pleiades cluster; Mel 22 #541; embedded in reflection nebulosity.

Survey Image

Loading survey image…