υ Ursae Majoris (upsilon Ursae Majoris)

Altitude: 20.5° Azimuth: 1.2° Direction: North

υ Ursae Majoris is a variable and double sub-giant star in the constellation of Ursa Major.

υ Ursae Majoris visual magnitude is 3.8. Because of its moderate brightness, υ 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 υ Ursae Majoris:

Color of υ Ursae Majoris ⬤

Magnitude of υ Ursae Majoris 3.8

Class Sub-giant

VISIBILITY RIGHT NOW

υ Ursae Majoris (upsilon Ursae Majoris) is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 20.5°
Azimuth: 1.2°
Direction: North

Celestial coordinates and finder chart of υ Ursae Majoris

υ 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 υ Ursae Majoris are provided in the following table:

Right Ascension J2000 09h 50m 59s

Declination J2000 +59° 02’ 18”

Galactic Longitude 154.31°

Galactic Latitude 45.58°

Constellation Ursa Major

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

Finder chart υ Ursae Majoris (upsilon Ursae Majoris) star

Simplified finder chart for υ Ursae Majoris (upsilon Ursae Majoris).

Visibility of υ 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

υ Ursae Majoris (upsilon Ursae Majoris) is circumpolar and transits at 05:23 UTC (altitude: 82.4°)

Digitized Sky Survey image of υ Ursae Majoris

The image below is a photograph of υ 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 υ Ursae Majoris is -0.293 arcsec per year in Right Ascension and -0.151 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of υ Ursae Majoris (upsilon Ursae Majoris) star

DSS2 image of υ Ursae Majoris. The red arrow shows the motion of υ Ursae Majoris during the next 1000 years (-4.88 arcmin in Right Ascension and -2.52 arcmin in declination);

Distance of υ Ursae Majoris from the Sun and relative movement

υ Ursae Majoris is distant 114.99 light years from the Sun and it is moving far from the Sun at the speed of 27 kilometers per second.

Distance (parsec) 35.27 pc

Distance (light year) 114.99 ly

Heliocentric radial velocity 27 km/s

Proper Motion RA -0.293 arcsec/year

Proper Motion Dec -0.151 arcsec/year

Spectral properties of υ Ursae Majoris

υ Ursae Majoris belongs to spectral class F2 and has a luminosity class of IV corresponding to a sub-giant star.

Absolute magnitude 1.06

Spectral Type F2IV

Color Index (B-V) 0.29

Temperature of υ Ursae Majoris 7526K

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

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

υ Ursae Majoris star system properties

υ Ursae Majoris 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 υ Ursae Majoris double sysyem:

Main star magnitude 3.8

Secondary star magnitude 12.4

Magnitude difference 8.6

Separation 11.3 arcsec

Alternative designations of υ Ursae Majoris

Bayer designation υ Ursae Majoris
(upsilon Ursae Majoris)

Flamsteed designation 29 Ursae Majoris

Henry Draper Catalogue HD84999

SAO Catalogue SAO27401

Hipparcos Catalogue HIP48319

Durchmusterung Catalogue BD+59 1268

FK5 Catalogue 368

General Catalogue of Variable Stars Ups UMa

Aitken Double Star Catalogue ADS7534

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Other stars in Ursa Major