Star profile

Omega Ursae Majoris

3D likeness based on its real data · class A · ~8,500 K

What is Omega Ursae Majoris

ω Ursae Majoris sits within the Great Bear, away from the seven stars of the Plough. It is a spectroscopic binary system 246 light-years away, with a chemically peculiar A1 V spectrum: it carries an excess of silicon in its atmosphere, one of those curious signatures of Ap stars that magnetic models still strive to fully explain.

Where it is and when to see it

Omega Ursae Majoris lies in the northern celestial hemisphere. It is visible to the naked eye under a dark sky. Its best month of the year is February, when it culminates around midnight.

From London it never sets and culminates about 82° up.
From New York it culminates about 88° above the horizon.
From Sydney it culminates about 13° above the horizon.

It can be seen from anywhere north of 47° S.

It ranks no. 28 in brightness among the 124 stars of Ursa Major in our catalogue. To find it, start from Alioth, the brightest: it lies about 23° away (a fist at arm's length covers about 10°).

The light you see today left it about 250 years ago.

Find it on the sky map

It opens in your browser. Free, no account, nothing to install.

Leave your signature on Omega Ursae Majoris

Your name and a message go up on the map for everyone to read. Signing is free.

Without a lock, someone else can replace your signature. How the lock works

We'll ask for an email to confirm it's you, no password.

Write my signature

A public signature from a real person. The chosen name is a symbolic denomination within Stelvia, with no official standing or IAU recognition: the sky is not for sale and belongs to no one.

Astronomical data for Omega Ursae Majoris

Constellation: Ursa Major
Apparent magnitude: 4.66
Distance: 246.4 light years
Coordinates (J2000): RA 163.495° · Dec 43.190°
Catalogue: HIP 53295 · HD 94334

A symbolic commemorative gift: neither the signature nor the chosen name implies ownership of the star or recognition by the IAU.

Other stars in Ursa Major

Ursa Major has 124 stars in Stelvia's catalogue. Here are a few of them.

See all 124 stars in Ursa Major