HR4631

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

HR4631 visual magnitude is 6.06. Because of its reltive faintness, HR4631 should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The table below summarizes the key facts about HR4631:

Color of HR4631 ⬤

Magnitude of HR4631 6.06

Class Main-sequence

VISIBILITY RIGHT NOW HR4631 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Celestial coordinates and finder chart of HR4631

HR4631 is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR4631 are provided in the following table:

Right Ascension J2000 12h 10m 33s

Declination J2000 -37° 52’ 13”

Galactic Longitude 294.09°

Galactic Latitude 24.3°

Constellation Centaurus

The simplified sky map below shows the position of HR4631 in the sky:

Simplified finder chart for HR4631.

Visibility of HR4631 from your location

Location: Greenwich, United Kingdom edit_location_alt
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

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

Azimuth: 127.9° RISE 19:37

Max altitude: 0.6° TRANSIT 20:26

Azimuth: 232.1° SET 21:15

RIGHT NOW HR4631 is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR4631

The image below is a photograph of HR4631 from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of HR4631 is 0.047 arcsec per year in Right Ascension and -0.035 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

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);

Distance of HR4631 from the Sun and relative movement

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 pc

Distance (light year) 233.52 ly

Heliocentric radial velocity -7 km/s

Proper Motion RA 0.047 arcsec/year

Proper Motion Dec -0.035 arcsec/year

Spectral properties of HR4631

HR4631 belongs to spectral class A5 and has a luminosity class of V corresponding to a main-sequence star.

Absolute magnitude 1.78

Spectral Type A5V

Color Index (B-V) 0.2

Temperature of HR4631 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

Alternative designations of HR4631

Henry Draper Catalogue HD105776

SAO Catalogue SAO203195

Hipparcos Catalogue HIP59353

Durchmusterung Catalogue CD-37 7714

FK5 Catalogue 2974

In Evidence

Other stars in Centaurus