HR4151

Altitude: -36.4° Azimuth: 215.1° Direction: South-West

HR4151 is a variable giant star in the constellation of Carina.

HR4151 visual magnitude is 6.23. Because of its reltive faintness, HR4151 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 HR4151:

Color of HR4151 ⬤

Magnitude of HR4151 6.23

Class Giant

VISIBILITY RIGHT NOW

HR4151 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -36.4°
Azimuth: 215.1°
Direction: South-West

Celestial coordinates and finder chart of HR4151

HR4151 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 HR4151 are provided in the following table:

Right Ascension J2000 10h 34m 12s

Declination J2000 -60° 59’ 16”

Galactic Longitude 287.05°

Galactic Latitude -2.42°

Constellation Carina

The simplified sky map below shows the position of HR4151 in the sky:

Simplified finder chart for HR4151.

Visibility of HR4151 from your location

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

HR4151 is currently not visible from Greenwich, United Kingdom edit_location_alt

Digitized Sky Survey image of HR4151

The image below is a photograph of HR4151 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 HR4151 is 0.004 arcsec per year in Right Ascension and -0.003 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

DSS2 image of HR4151. The red arrow shows the motion of HR4151 during the next 100000 years (6.67 arcmin in Right Ascension and -5.00 arcmin in declination);

Distance of HR4151 from the Sun and relative movement

HR4151 is distant 829.52 light years from the Sun and it is moving towards the Sun at the speed of 1 kilometers per second.

Distance (parsec) 254.45 pc

Distance (light year) 829.52 ly

Heliocentric radial velocity -1 km/s

Proper Motion RA 0.004 arcsec/year

Proper Motion Dec -0.003 arcsec/year

Spectral properties of HR4151

HR4151 belongs to spectral class K2 and has a luminosity class of III corresponding to a giant star.

Absolute magnitude -0.80

Spectral Type K2III

Color Index (B-V) 1.4

Temperature of HR4151 3950K

The red dot in the diagram below shows where HR4151 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR4151. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4151

Henry Draper Catalogue HD91767

SAO Catalogue SAO251014

Hipparcos Catalogue HIP51732

Durchmusterung Catalogue CP-60 1983

General Catalogue of Variable Stars 4898

In Evidence

Other stars in Carina