39 Ursae Majoris

Altitude: 18.7° Azimuth: 1.7° Direction: North

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

39 Ursae Majoris visual magnitude is 5.8. Because of its reltive faintness, 39 Ursae Majoris 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 39 Ursae Majoris:

Color of 39 Ursae Majoris ⬤

Magnitude of 39 Ursae Majoris 5.8

Class Hypergiant

VISIBILITY RIGHT NOW

39 Ursae Majoris is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 18.7°
Azimuth: 1.7°
Direction: North

Celestial coordinates and finder chart of 39 Ursae Majoris

39 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 39 Ursae Majoris are provided in the following table:

Right Ascension J2000 10h 43m 43s

Declination J2000 +57° 11’ 57”

Galactic Longitude 150.95°

Galactic Latitude 52.42°

Constellation Ursa Major

The simplified sky map below shows the position of 39 Ursae Majoris in the sky:

Simplified finder chart for 39 Ursae Majoris.

Visibility of 39 Ursae Majoris from your location

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

39 Ursae Majoris is circumpolar and transits at 05:40 UTC (altitude: 84.3°)

Digitized Sky Survey image of 39 Ursae Majoris

The image below is a photograph of 39 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 39 Ursae Majoris is 0.017 arcsec per year in Right Ascension and -0.053 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of 39 Ursae Majoris. The red arrow shows the motion of 39 Ursae Majoris during the next 10000 years (2.83 arcmin in Right Ascension and -8.83 arcmin in declination);

Distance of 39 Ursae Majoris from the Sun and relative movement

39 Ursae Majoris is distant 367.53 light years from the Sun and it is moving towards the Sun at the speed of 15 kilometers per second.

Distance (parsec) 112.74 pc

Distance (light year) 367.53 ly

Heliocentric radial velocity -15 km/s

Proper Motion RA 0.017 arcsec/year

Proper Motion Dec -0.053 arcsec/year

Spectral properties of 39 Ursae Majoris

39 Ursae Majoris belongs to spectral class A0 and has a luminosity class of V corresponding to a hypergiant star.

Absolute magnitude 0.54

Spectral Type A0V

Color Index (B-V) -0.02

Temperature of 39 Ursae Majoris 10382K

The red dot in the diagram below shows where 39 Ursae Majoris is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 39 Ursae Majoris. Attribution: Richard Powell / CC BY-SA

Alternative designations of 39 Ursae Majoris

Flamsteed designation 39 Ursae Majoris

Henry Draper Catalogue HD92728

SAO Catalogue SAO27748

Hipparcos Catalogue HIP52478

Durchmusterung Catalogue BD+57 1286

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In Evidence

Other stars in Ursa Major