15 Orionis

15 Orionis is a sub-giant star in the constellation of Orion.

15 Orionis visual magnitude is 4.82. Because of its moderate brightness, 15 Orionis should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.

The table below summarizes the key facts about 15 Orionis:

Color of 15 Orionis ⬤

Magnitude of 15 Orionis 4.82

Class Sub-giant

VISIBILITY RIGHT NOW 15 Orionis is above the horizon from Greenwich, United Kingdom edit_location_alt. Altitude: 22°.

Celestial coordinates and finder chart of 15 Orionis

15 Orionis 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 15 Orionis are provided in the following table:

Right Ascension J2000 05h 09m 42s

Declination J2000 +15° 35’ 49”

Galactic Longitude 186.74°

Galactic Latitude -14.21°

Constellation Orion

The simplified sky map below shows the position of 15 Orionis in the sky:

Simplified finder chart for 15 Orionis.

Visibility of 15 Orionis 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 15 Orionis 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: 74.4° RISE 6:18

Max altitude: 54.1° TRANSIT 13:38

Azimuth: 285.6° SET 20:58

RIGHT NOW 15 Orionis is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of 15 Orionis

The image below is a photograph of 15 Orionis 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 15 Orionis is 0.002 arcsec per year in Right Ascension and -0.013 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of 15 Orionis. The red arrow shows the motion of 15 Orionis during the next 10000 years (0.33 arcmin in Right Ascension and -2.17 arcmin in declination);

Distance of 15 Orionis from the Sun and relative movement

15 Orionis is distant 318.36 light years from the Sun and it is moving far from the Sun at the speed of 30 kilometers per second.

Distance (parsec) 97.66 pc

Distance (light year) 318.36 ly

Heliocentric radial velocity 30 km/s

Proper Motion RA 0.002 arcsec/year

Proper Motion Dec -0.013 arcsec/year

Spectral properties of 15 Orionis

15 Orionis belongs to spectral class F2 and has a luminosity class of IV corresponding to a sub-giant star.

Absolute magnitude -0.13

Spectral Type F2IV

Color Index (B-V) 0.32

Temperature of 15 Orionis 7337K

The red dot in the diagram below shows where 15 Orionis is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 15 Orionis. Attribution: Richard Powell / CC BY-SA

Alternative designations of 15 Orionis

Flamsteed designation 15 Orionis

Henry Draper Catalogue HD33276

SAO Catalogue SAO94359

Hipparcos Catalogue HIP24010

Durchmusterung Catalogue BD+15 752

In Evidence

Other stars in Orion