15 Ursae Majoris

15 Ursae Majoris is a hypergiant star in the constellation of Ursa Major.

15 Ursae Majoris visual magnitude is 4.48. Because of its moderate brightness, 15 Ursae Majoris 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 Ursae Majoris:

Color of 15 Ursae Majoris ⬤

Magnitude of 15 Ursae Majoris 4.48

Class Hypergiant

VISIBILITY RIGHT NOW 15 Ursae Majoris is above the horizon from Greenwich, United Kingdom [change]. Altitude: 14°.

Celestial coordinates and finder chart of 15 Ursae Majoris

15 Ursae Majoris is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of 15 Ursae Majoris are provided in the following table:

Right Ascension J2000 09h 08m 52s

Declination J2000 +51° 36’ 16”

Galactic Longitude 166.57°

Galactic Latitude 42.02°

Constellation Ursa Major

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

Simplified finder chart for 15 Ursae Majoris.

Visibility of 15 Ursae Majoris from your location

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

15 Ursae Majoris is circumpolar and transits at 20:25 UTC (altitude: 89.9°)

Digitized Sky Survey image of 15 Ursae Majoris

The image below is a photograph of 15 Ursae Majoris 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 Ursae Majoris is -0.137 arcsec per year in Right Ascension and -0.03 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

DSS2 image of 15 Ursae Majoris. The red arrow shows the motion of 15 Ursae Majoris during the next 1000 years (-2.28 arcmin in Right Ascension and -0.50 arcmin in declination);

Distance of 15 Ursae Majoris from the Sun and relative movement

15 Ursae Majoris is distant 95.55 light years from the Sun

Distance (parsec) 29.31 pc

Distance (light year) 95.55 ly

Proper Motion RA -0.137 arcsec/year

Proper Motion Dec -0.03 arcsec/year

Spectral properties of 15 Ursae Majoris

15 Ursae Majoris belongs to spectral class F0 and has a luminosity class of IV corresponding to a hypergiant star.

Absolute magnitude 2.15

Spectral Type F0IV

Color Index (B-V) 0.27

Temperature of 15 Ursae Majoris 7658K

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

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

Alternative designations of 15 Ursae Majoris

Flamsteed designation 15 Ursae Majoris

Henry Draper Catalogue HD78209

SAO Catalogue SAO27136

Hipparcos Catalogue HIP44901

Durchmusterung Catalogue BD+52 1365

Gliese Catalogue NN 3534

FK5 Catalogue 2721

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Other stars in Ursa Major