HR1642

Above the horizon. Rise: 20:52 | Tran: 4:42 | Set: 12:27

Alt: 56.78° Az: 202.54° Direction: South-South-West

HR1642 is a double star of spectral class A5 in the constellation of Taurus.

HR1642 visual magnitude is 6.44. Because of its faintness, HR1642 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 HR1642. The red arrow shows the motion of HR1642 during the next 10000 years (-1.50 arcmin in Right Ascension and -3.67 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 05h 06m 59s

Declination +19° 50’ 18”

Hour Angle 00h 51m 35s

Sideral Time 05h 58m 35s

J2000

Right Ascension 05h 05m 32s

Declination +19° 48’ 23”

Galactic Coordinates

Galactic Longitude 182.6°

Galactic Latitude -12.64°

Finder Chart

Simplified finder chart for HR1642.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.44

Class

Absolute magnitude 0.67

Spectral Type A5

Color Index (B-V) 0.21

Temperature 8086K

The red dot in the diagram below shows where HR1642 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR1642. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR1642 is a visual double star which can be observed with the help of large telescopes. The table below shows key information about the HR1642 double sysyem:

Main star magnitude 6.44

Secondary star magnitude 7.04

Magnitude difference 0.6

Separation 1.1 arcsec

Distance, Radial Speed, Proper Motion

HR1642 is distant 463.73 light years from the Sun and it is moving towards the Sun at the speed of 17 kilometers per second.

Distance (parsec) 142.25

Distance (light year) 463.73

Radial Speed -17 km/s

Proper Motion RA -0.009 arcsec/y

Proper Motion Dec -0.022"/y

Alternative Designations

Henry Draper Catalogue HD32642

SAO Catalogue SAO94306

Hipparcos Catalogue HIP23695

Durchmusterung Catalogue BD+19 847

Aitken Double Star Catalogue ADS3672

Visibility from Your Location

Today's HR1642 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 70.2° RISE 20:52

Max altitude: 58.4° TRANSIT 4:42

Azimuth: 289.8° SET 12:27

Set Location

Other stars in Taurus