Asterope - 21 Tauri

Below the horizon. Rise: 19:04 | Tran: 3:26 | Set: 11:44

Alt: -13.47° Az: 8.53° Direction: North

Asterope, also designated as 21 Tauri , is a variable main-sequence star of spectral class B8 in the constellation of Taurus.

Asterope visual magnitude is 5.76. Because of its faintness, Asterope is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

DSS2 image of Asterope. The red arrow shows the motion of Asterope during the next 10000 years (1.83 arcmin in Right Ascension and -7.00 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 03h 47m 23s

Declination +24° 37’ 49”

Hour Angle 12h 36m 31s

Sideral Time 16h 23m 55s

J2000

Right Ascension 03h 45m 54s

Declination +24° 33’ 16”

Galactic Coordinates

Galactic Longitude 166.05°

Galactic Latitude -23.36°

Finder Chart

Simplified finder chart for Asterope - 21 Tauri.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.76

Class Main-sequence

Absolute magnitude 0.39

Spectral Type B8V

Color Index (B-V) -0.04

Temperature 10653K

The red dot in the diagram below shows where Asterope is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of Asterope. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

Asterope is distant 386.71 light years from the Sun and it is moving far from the Sun at the speed of 9 kilometers per second.

Distance (parsec) 118.62

Distance (light year) 386.71

Radial Speed 9 km/s

Proper Motion RA 0.011 arcsec/y

Proper Motion Dec -0.042"/y

Alternative Designations

Proper Name Asterope

Flamsteed designation 21 Tauri

Henry Draper Catalogue HD23432

SAO Catalogue SAO76159

Hipparcos Catalogue HIP17579

Durchmusterung Catalogue BD+24 553

General Catalogue of Variable Stars 1283

Visibility from Your Location

Today's Asterope - 21 Tauri rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 65.4° RISE 19:04

Max altitude: 63.2° TRANSIT 3:26

Azimuth: 294.6° SET 11:44

Set Location

Other stars in Taurus