HR3240

HR3240 is a variable and double sub-giant star in the constellation of Puppis.

HR3240 visual magnitude is 5.08. Because of its reltive faintness, HR3240 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 HR3240:

Color of HR3240 ⬤

Magnitude of HR3240 5.08

Class Sub-giant

VISIBILITY RIGHT NOW HR3240 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Celestial coordinates and finder chart of HR3240

HR3240 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 HR3240 are provided in the following table:

Right Ascension J2000 08h 13m 58s

Declination J2000 -36° 19’ 20”

Galactic Longitude 253.98°

Galactic Latitude -1°

Constellation Puppis

The simplified sky map below shows the position of HR3240 in the sky:

Simplified finder chart for HR3240.

Visibility of HR3240 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 HR3240 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: 126.3° RISE 15:20

Max altitude: 2.2° TRANSIT 16:50

Azimuth: 233.7° SET 18:19

RIGHT NOW HR3240 is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR3240

The image below is a photograph of HR3240 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 HR3240 is 0.01 arcsec per year in Right Ascension and -0.002 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR3240. The red arrow shows the motion of HR3240 during the next 10000 years (1.67 arcmin in Right Ascension and -0.33 arcmin in declination);

Distance of HR3240 from the Sun and relative movement

HR3240 is distant 1,176.90 light years from the Sun and it is moving far from the Sun at the speed of 18 kilometers per second.

Distance (parsec) 361.01 pc

Distance (light year) 1,176.90 ly

Heliocentric radial velocity 18 km/s

Proper Motion RA 0.01 arcsec/year

Proper Motion Dec -0.002 arcsec/year

Spectral properties of HR3240

HR3240 belongs to spectral class B1 and has a luminosity class of IV corresponding to a sub-giant star.

Absolute magnitude -2.71

Spectral Type B1IV

Color Index (B-V) -0.19

Temperature of HR3240 13348K

The red dot in the diagram below shows where HR3240 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR3240. Attribution: Richard Powell / CC BY-SA

HR3240 star system properties

HR3240 is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the HR3240 double sysyem:

Main star magnitude 5.08

Secondary star magnitude 5.98

Magnitude difference 0.9

Separation 66.9 arcsec

Alternative designations of HR3240

Henry Draper Catalogue HD69081

SAO Catalogue SAO198969

Hipparcos Catalogue HIP40321

Durchmusterung Catalogue CD-35 4358

General Catalogue of Variable Stars OS Pup

In Evidence

Other stars in Puppis