78 Ursae Majoris

Above the horizon. Circumpolar today

Alt: 28.17° Az: 327.29° Direction: North-North-West

78 Ursae Majoris is a variable and double main-sequence star of spectral class F2 in the constellation of Ursa Major.

78 Ursae Majoris visual magnitude is 4.93. Because of its moderate brightness, 78 Ursae Majoris is easily visible to the naked eye from locations with dark skies, while it might be barely visible, or not visible at all, from light-polluted skies.

DSS2 image of 78 Ursae Majoris. The red arrow shows the motion of 78 Ursae Majoris during the next 1000 years (1.90 arcmin in Right Ascension and -0.15 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 13h 01m 48s

Declination +56° 13’ 48”

Hour Angle 08h 04m 02s

Sidereal Time 21h 05m 50s

J2000

Right Ascension 13h 00m 43s

Declination +56° 21’ 59”

Galactic Coordinates

Galactic Longitude 120.3°

Galactic Latitude 60.71°

Finder Chart

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Finder chart for 78 Ursae Majoris.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.93

Class Main-sequence

Absolute magnitude 2.94

Spectral Type F2V

Color Index (B-V) 0.36

Temperature 7101K

The red dot in the diagram below shows where 78 Ursae Majoris is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 78 Ursae Majoris. Attribution: Richard Powell / CC BY-SA

Star System Properties

78 Ursae Majoris is a visual double star which can be observed with the help of large telescopes. The table below shows key information about the 78 Ursae Majoris double sysyem:

Main star magnitude 4.93

Secondary star magnitude 7.43

Magnitude difference 2.5

Separation 1.3 arcsec

Distance, Radial Speed, Proper Motion

78 Ursae Majoris is distant 81.38 light years from the Sun and it is moving towards the Sun at the speed of 10 kilometers per second.

Distance (parsec) 24.96

Distance (light year) 81.38

Radial Speed -10 km/s

Proper Motion RA 0.114 arcsec/y

Proper Motion Dec -0.009"/y

Alternative Designations

Flamsteed designation 78 Ursae Majoris

Henry Draper Catalogue HD113139

SAO Catalogue SAO28601

Hipparcos Catalogue HIP63503

Durchmusterung Catalogue BD+57 1408

General Catalogue of Variable Stars 6058

Aitken Double Star Catalogue ADS8739

Visibility from Your Location

78 Ursae Majoris is circumpolar and transits at 21:10 UTC (altitude: 85.2°)

In Evidence

Other stars in Ursa Major

78 Ursae Majoris

Celestial Coordinates

Apparent

J2000

Galactic Coordinates

Finder Chart

Magnitude, Color, Spectral Class

Star System Properties

Distance, Radial Speed, Proper Motion

Alternative Designations

Visibility from Your Location

Set Location

In Evidence

Other stars in Ursa Major

78 Ursae Majoris

Celestial Coordinates

Apparent

J2000

Galactic Coordinates

Finder Chart

Magnitude, Color, Spectral Class

Star System Properties

Distance, Radial Speed, Proper Motion

Alternative Designations

Visibility from Your Location