Star profile

10 Boötis

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

What is 10 Boötis

10 Boötis is a white star in the Herdsman suspected of being an astrometric binary: no second point is seen, but its motion against the sky betrays the tug of an unseen companion. About five hundred light-years away, it glimmers faintly for the unaided eye under clean skies. Its light set out when the Netherlands lived their Golden Age, and Vermeer let light fall through his painted windows.

Where it is and when to see it

10 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 60° above the horizon.
From New York it culminates about 71° above the horizon.
From Sydney it culminates about 34° above the horizon.

It can be seen from anywhere north of 68° S.

It ranks no. 67 in brightness among the 88 stars of Boötes in our catalogue. To find it, start from Arcturus, the brightest: it lies about 5° away (a fist at arm's length covers about 10°).

The light you see today left it about 470 years ago.

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Astronomical data for 10 Boötis

Constellation: Boötes
Apparent magnitude: 5.76
Distance: 472.1 light years
Coordinates (J2000): RA 209.662° · Dec 21.696°
Catalogue: HIP 68276 · HD 121996

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Other stars in Boötes

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

See all 88 stars in Boötes