π1 Ursae Majoris (pi1 Ursae Majoris)

π1 Ursae Majoris is a main-sequence star in the constellation of Ursa Major.

π1 Ursae Majoris visual magnitude is 5.64. Because of its reltive faintness, π1 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 π1 Ursae Majoris:

Color of π1 Ursae Majoris ⬤

Magnitude of π1 Ursae Majoris 5.64

Class Main-sequence

VISIBILITY RIGHT NOW π1 Ursae Majoris (pi1 Ursae Majoris) is above the horizon from Greenwich, United Kingdom [change]. Altitude: 39°.

Celestial coordinates and finder chart of π1 Ursae Majoris

π1 Ursae Majoris is situated close to the northern celestial pole and, as such, it is visible for most part of the year from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of π1 Ursae Majoris are provided in the following table:

Right Ascension J2000 08h 39m 11s

Declination J2000 +65° 01’ 14”

Galactic Longitude 150.55°

Galactic Latitude 35.7°

Constellation Ursa Major

The simplified sky map below shows the position of π1 Ursae Majoris in the sky:

Finder chart π1 Ursae Majoris (pi1 Ursae Majoris) star

Simplified finder chart for π1 Ursae Majoris (pi1 Ursae Majoris).

Visibility of π1 Ursae Majoris from your location

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

π1 Ursae Majoris (pi1 Ursae Majoris) is circumpolar and transits at 20:38 UTC (altitude: 76.5°)

Digitized Sky Survey image of π1 Ursae Majoris

The image below is a photograph of π1 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 π1 Ursae Majoris is -0.024 arcsec per year in Right Ascension and 0.088 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of π1 Ursae Majoris (pi1 Ursae Majoris) star

DSS2 image of π1 Ursae Majoris. The red arrow shows the motion of π1 Ursae Majoris during the next 10000 years (-4.00 arcmin in Right Ascension and 14.67 arcmin in declination);

Distance of π1 Ursae Majoris from the Sun and relative movement

π1 Ursae Majoris is distant 46.52 light years from the Sun and it is moving towards the Sun at the speed of 12 kilometers per second.

Distance (parsec) 14.27 pc

Distance (light year) 46.52 ly

Heliocentric radial velocity -12 km/s

Proper Motion RA -0.024 arcsec/year

Proper Motion Dec 0.088 arcsec/year

Spectral properties of π1 Ursae Majoris

π1 Ursae Majoris belongs to spectral class G1 and has a luminosity class of V corresponding to a main-sequence star.

Absolute magnitude 4.87

Spectral Type G1V

Color Index (B-V) 0.62

Temperature of π1 Ursae Majoris 5890K

The red dot in the diagram below shows where π1 Ursae Majoris is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of π1 Ursae Majoris. Attribution: Richard Powell / CC BY-SA

Alternative designations of π1 Ursae Majoris

Bayer designation π1 Ursae Majoris
(pi1 Ursae Majoris)

Flamsteed designation 3 Ursae Majoris

Henry Draper Catalogue HD72905

SAO Catalogue SAO14609

Hipparcos Catalogue HIP42438

Durchmusterung Catalogue BD+65 643

Gliese Catalogue Gl 311

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Other stars in Ursa Major