HR4631

Below the horizon. Rise: 20:57 | Tran: 21:40 | Set: 22:23

Alt: -18.06° Az: 230.92° Direction: South-West

HR4631 is a main-sequence star of spectral class A5 in the constellation of Centaurus.

HR4631 visual magnitude is 6.06. Because of its faintness, HR4631 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 HR4631. The red arrow shows the motion of HR4631 during the next 10000 years (7.83 arcmin in Right Ascension and -5.83 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 12h 11m 53s

Declination -38° 00’ 40”

Hour Angle 04h 38m 03s

Sidereal Time 16h 49m 56s

J2000

Right Ascension 12h 10m 33s

Declination -37° 52’ 13”

Galactic Coordinates

Galactic Longitude 294.09°

Galactic Latitude 24.3°

Finder Chart

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Finder chart for HR4631.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.06

Class Main-sequence

Absolute magnitude 1.78

Spectral Type A5V

Color Index (B-V) 0.2

Temperature 8163K

The red dot in the diagram below shows where HR4631 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR4631. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

HR4631 is distant 233.52 light years from the Sun and it is moving towards the Sun at the speed of 7 kilometers per second.

Distance (parsec) 71.63

Distance (light year) 233.52

Radial Speed -7 km/s

Proper Motion RA 0.047 arcsec/y

Proper Motion Dec -0.035"/y

Alternative Designations

Henry Draper Catalogue HD105776

SAO Catalogue SAO203195

Hipparcos Catalogue HIP59353

Durchmusterung Catalogue CD-37 7714

FK5 Catalogue 2974

Visibility from Your Location

Today's HR4631 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 128.0° RISE 20:57

Max altitude: 0.5° TRANSIT 21:40

Azimuth: 232.0° SET 22:23

Set Location

Other stars in Centaurus