Star profile

HIP 66640

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

What is HIP 66640

In the serene heights of Boötes shines a yellow-white F-class star, slightly hotter and more luminous than the Sun. Its light set out some 195 years ago, when the first steam locomotives were beginning to lay rails across the English countryside. F stars are balanced bodies, sharp messengers whose spectra show the earliest clear lines of ionised calcium.

Where it is and when to see it

HIP 66640 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 49° above the horizon.
From New York it culminates about 60° above the horizon.
From Sydney it culminates about 45° above the horizon.

It can be seen from anywhere north of 79° S.

It ranks no. 51 in brightness among the 88 stars of Boötes in our catalogue. To find it, start from Arcturus, the brightest: it lies about 12° away (a fist at arm's length covers about 10°).

The light you see today left it about 200 years ago.

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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 HIP 66640

Constellation: Boötes
Apparent magnitude: 5.57
Distance: 195.7 light years
Coordinates (J2000): RA 204.894° · Dec 10.746°
Catalogue: HIP 66640 · HD 118889

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