Star profile

Sigma 2 Ursae Majoris

3D likeness based on its real data · class F · ~6,500 K

What is Sigma 2 Ursae Majoris

Sigma-2 Ursae Majoris is a binary about 66 light-years away in the heart of the Great Bear, made up of a yellow-white subgiant and a smaller orange companion. The primary burns nine per cent hotter than the Sun while the secondary sits near 4600 degrees, eighty per cent of the solar temperature. It lies somewhat apart from the famous Big Dipper, tucked into a region less travelled by either gaze or traditional naming.

Where it is and when to see it

Sigma 2 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 January: the Sun sits at the opposite point of the sky and the star culminates around midnight. How high it climbs above the horizon depends on the latitude you watch from.

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The signature wall

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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 Sigma 2 Ursae Majoris

Constellation: Ursa Major
Apparent magnitude: 4.80
Distance: 66.5 light years
Coordinates (J2000): RA 137.598° · Dec 67.134°
Catalogue: HIP 45038 · HD 78154

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