18 Puppis

18 Puppis is a double main-sequence star in the constellation of Puppis.

18 Puppis visual magnitude is 5.54. Because of its reltive faintness, 18 Puppis 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 18 Puppis:

Color of 18 Puppis ⬤

Magnitude of 18 Puppis 5.54

Class Main-sequence

VISIBILITY RIGHT NOW 18 Puppis is below the horizon from Greenwich, United Kingdom edit_location_alt.

Celestial coordinates and finder chart of 18 Puppis

18 Puppis is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of 18 Puppis are provided in the following table:

Right Ascension J2000 08h 10m 39s

Declination J2000 -13° 47’ 57”

Galactic Longitude 234.57°

Galactic Latitude 10.61°

Constellation Puppis

The simplified sky map below shows the position of 18 Puppis in the sky:

Simplified finder chart for 18 Puppis.

Visibility of 18 Puppis 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 18 Puppis 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: 103.8° RISE 12:00

Max altitude: 24.7° TRANSIT 16:46

Azimuth: 256.2° SET 21:33

RIGHT NOW 18 Puppis is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of 18 Puppis

The image below is a photograph of 18 Puppis 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 18 Puppis is -0.251 arcsec per year in Right Ascension and 0.061 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

DSS2 image of 18 Puppis. The red arrow shows the motion of 18 Puppis during the next 1000 years (-4.18 arcmin in Right Ascension and 1.02 arcmin in declination);

Distance of 18 Puppis from the Sun and relative movement

18 Puppis is distant 73.31 light years from the Sun and it is moving far from the Sun at the speed of 38 kilometers per second.

Distance (parsec) 22.49 pc

Distance (light year) 73.31 ly

Heliocentric radial velocity 38 km/s

Proper Motion RA -0.251 arcsec/year

Proper Motion Dec 0.061 arcsec/year

Spectral properties of 18 Puppis

18 Puppis belongs to spectral class F6 and has a luminosity class of V corresponding to a main-sequence star.

Absolute magnitude 3.78

Spectral Type F6V

Color Index (B-V) 0.49

Temperature of 18 Puppis 6435K

The red dot in the diagram below shows where 18 Puppis is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 18 Puppis. Attribution: Richard Powell / CC BY-SA

18 Puppis star system properties

18 Puppis is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the 18 Puppis double sysyem:

Main star magnitude 5.54

Secondary star magnitude 12.24

Magnitude difference 6.7

Separation 93 arcsec

Alternative designations of 18 Puppis

Flamsteed designation 18 Puppis

Henry Draper Catalogue HD68146

SAO Catalogue SAO153924

Hipparcos Catalogue HIP40035

Durchmusterung Catalogue BD-13 2420

Gliese Catalogue Gl 297.2A

FK5 Catalogue 2637

In Evidence

Other stars in Puppis