HR3121

HR3121 is a giant star in the constellation of Puppis.

HR3121 visual magnitude is 5.17. Because of its reltive faintness, HR3121 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 HR3121:

Color of HR3121 ⬤

Magnitude of HR3121 5.17

Class Giant

VISIBILITY RIGHT NOW HR3121 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Celestial coordinates and finder chart of HR3121

HR3121 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 HR3121 are provided in the following table:

Right Ascension J2000 07h 57m 51s

Declination J2000 -45° 34’ 40”

Galactic Longitude 260.23°

Galactic Latitude -8.49°

Constellation Puppis

The simplified sky map below shows the position of HR3121 in the sky:

Simplified finder chart for HR3121.

Visibility of HR3121 from your location

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

HR3121 is currently not visible from Greenwich, United Kingdom edit_location_alt

Digitized Sky Survey image of HR3121

The image below is a photograph of HR3121 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 HR3121 is -0.006 arcsec per year in Right Ascension and 0.02 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR3121. The red arrow shows the motion of HR3121 during the next 10000 years (-1.00 arcmin in Right Ascension and 3.33 arcmin in declination);

Distance of HR3121 from the Sun and relative movement

HR3121 is distant 299.91 light years from the Sun and it is moving far from the Sun at the speed of 51 kilometers per second.

Distance (parsec) 92.00 pc

Distance (light year) 299.91 ly

Heliocentric radial velocity 51 km/s

Proper Motion RA -0.006 arcsec/year

Proper Motion Dec 0.02 arcsec/year

Spectral properties of HR3121

HR3121 belongs to spectral class K2 and has a luminosity class of III corresponding to a giant star.

Absolute magnitude 0.35

Spectral Type K2III

Color Index (B-V) 1.27

Temperature of HR3121 4176K

The red dot in the diagram below shows where HR3121 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR3121. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR3121

Henry Draper Catalogue HD65685

SAO Catalogue SAO219218

Hipparcos Catalogue HIP38917

Durchmusterung Catalogue CD-45 3611

In Evidence

Other stars in Puppis