HR1772

Above the horizon. Rise: 2:58 | Tran: 5:01 | Set: 7:04

Alt: 3.24° Az: 167.96° Direction: South-South-East

HR1772 is a variable and double sub-giant star of spectral class B5 in the constellation of Columba.

HR1772 visual magnitude is 6.09. Because of its faintness, HR1772 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 HR1772. The red arrow shows the motion of HR1772 during the next 100000 years (15.00 arcmin in Right Ascension and 1.67 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 05h 22m 10s

Declination -34° 19’ 20”

Hour Angle 23h 01m 34s

Sideral Time 04h 23m 45s

J2000

Right Ascension 05h 21m 16s

Declination -34° 20’ 43”

Galactic Coordinates

Galactic Longitude 238.07°

Galactic Latitude -32.61°

Finder Chart

Simplified finder chart for HR1772.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.09

Class Sub-giant

Absolute magnitude -2.73

Spectral Type B5IV

Color Index (B-V) -0.19

Temperature 13348K

The red dot in the diagram below shows where HR1772 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR1772. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR1772 is a visual double star which can be observed with the help of medium or large telescopes. The table below shows key information about the HR1772 double sysyem:

Main star magnitude 6.09

Secondary star magnitude 10.89

Magnitude difference 4.8

Separation 2.2 arcsec

Distance, Radial Speed, Proper Motion

HR1772 is distant 1,895.35 light years from the Sun and it is moving far from the Sun at the speed of 20 kilometers per second.

Distance (parsec) 581.40

Distance (light year) 1,895.35

Radial Speed 20 km/s

Proper Motion RA 0.009 arcsec/y

Proper Motion Dec 0.001"/y

Alternative Designations

Henry Draper Catalogue HD35165

SAO Catalogue SAO195770

Hipparcos Catalogue HIP25007

Durchmusterung Catalogue CD-34 2207

General Catalogue of Variable Stars Var?

Visibility from Your Location

Today's HR1772 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 124.3° RISE 2:58

Max altitude: 4.2° TRANSIT 5:01

Azimuth: 235.7° SET 7:04

Set Location

Other stars in Columba