HR3151

HR3151 is a variable hypergiant star in the constellation of Puppis.

HR3151 visual magnitude is 6.12. Because of its reltive faintness, HR3151 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 HR3151:

Color of HR3151 ⬤

Magnitude of HR3151 6.12

Class Hypergiant

VISIBILITY RIGHT NOW HR3151 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Celestial coordinates and finder chart of HR3151

HR3151 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 HR3151 are provided in the following table:

Right Ascension J2000 08h 00m 28s

Declination J2000 -48° 52’ 17”

Galactic Longitude 263.34°

Galactic Latitude -9.77°

Constellation Puppis

The simplified sky map below shows the position of HR3151 in the sky:

Simplified finder chart for HR3151.

Visibility of HR3151 from your location

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

HR3151 is currently not visible from Greenwich, United Kingdom edit_location_alt

Digitized Sky Survey image of HR3151

The image below is a photograph of HR3151 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 HR3151 is -0.014 arcsec per year in Right Ascension and 0.012 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR3151. The red arrow shows the motion of HR3151 during the next 10000 years (-2.33 arcmin in Right Ascension and 2.00 arcmin in declination);

Distance of HR3151 from the Sun and relative movement

HR3151 is distant 1,509.26 light years from the Sun and it is moving far from the Sun at the speed of 28 kilometers per second.

Distance (parsec) 462.96 pc

Distance (light year) 1,509.26 ly

Heliocentric radial velocity 28 km/s

Proper Motion RA -0.014 arcsec/year

Proper Motion Dec 0.012 arcsec/year

Spectral properties of HR3151

HR3151 belongs to spectral class A0 HR3151 is also a Si chemically peculiar star.

Absolute magnitude -2.21

Spectral Type A0

Color Index (B-V) -0.11

Temperature of HR3151 11744K

The red dot in the diagram below shows where HR3151 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR3151. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR3151

Henry Draper Catalogue HD66255

SAO Catalogue SAO219292

Hipparcos Catalogue HIP39153

Durchmusterung Catalogue CD-48 3388

General Catalogue of Variable Stars PY Pup

In Evidence

Other stars in Puppis