Star profile

18 Boötis

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

What is 18 Boötis

18 Boötis is a close neighbour on the cosmic scale: about eighty-five light-years away, an F-type star burning slightly hotter than the Sun with a characteristic yellow-white. It belongs to the Herdsman, the shepherd figure whose chief light, Arcturus, is one of the most celebrated stars in the sky. Its light takes less than a century to cross space and reach a human pupil.

Where it is and when to see it

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

From London it culminates about 52° above the horizon.
From New York it culminates about 62° above the horizon.
From Sydney it culminates about 43° above the horizon.

It can be seen from anywhere north of 77° S.

It ranks no. 43 in brightness among the 88 stars of Boötes in our catalogue. To find it, start from Arcturus, the brightest: it lies about 6° away (a fist at arm's length covers about 10°).

The light you see today left it about 85 years ago.

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Astronomical data for 18 Boötis

Constellation: Boötes
Apparent magnitude: 5.41
Distance: 85.1 light years
Coordinates (J2000): RA 214.818° · Dec 13.004°
Catalogue: HIP 69989 · HD 125451

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

Other stars in Boötes

Boötes has 88 stars in Stelvia's catalogue. Here are a few of them.

See all 88 stars in Boötes