Star profile

Theta Arietis

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

What is Theta Arietis

Theta Arietis is a white main-sequence A-type star, located about 448 light-years away in the body of the Ram. Its brightness, right at the limit of naked-eye visibility under dark skies, reflects a surface at several thousand degrees that lends it a discreet bluish tone. A serene guest in a constellation better remembered for its symbolism than for its starry map.

Where it is and when to see it

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

From London it culminates about 58° above the horizon.
From New York it culminates about 69° above the horizon.
From Sydney it culminates about 36° above the horizon.

It can be seen from anywhere north of 70° S.

It ranks no. 28 in brightness among the 57 stars of Aries in our catalogue. To find it, start from Hamal, the brightest: it lies about 4° away (a fist at arm's length covers about 10°).

The light you see today left it about 450 years ago.

Find it on the sky map

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Leave your signature on Theta Arietis

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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 Theta Arietis

Constellation: Aries
Apparent magnitude: 5.58
Distance: 447.5 light years
Coordinates (J2000): RA 34.531° · Dec 19.901°
Catalogue: HIP 10732 · HD 14191

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

Other stars in Aries

Aries has 57 stars in Stelvia's catalogue. Here are a few of them.

See all 57 stars in Aries