Star profile

17 Delphinus

3D likeness based on its real data · class K · ~4,200 K

What is 17 Delphinus

17 Delphini glows orange from 480 light-years away, a K-type giant set in the small, elegant Dolphin. Its surface, cooler than the Sun's, radiates the warm tone characteristic of stars that have outgrown maturity. At magnitude 5.19, right at the threshold of the naked eye under dark skies, it accompanies the Dolphin's diamond as it seems to leap between Eagle and Pegasus through summer nights.

Where it is and when to see it

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

From London it culminates about 52° above the horizon.
From New York it culminates about 63° above the horizon.
From Sydney it culminates about 42° above the horizon.

It can be seen from anywhere north of 76° S.

It ranks no. 9 in brightness among the 18 stars of Delphinus in our catalogue. To find it, start from Rotanev, the brightest: it lies about 4° away (a fist at arm's length covers about 10°).

The light you see today left it about 480 years ago.

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Astronomical data for 17 Delphinus

Constellation: Delphinus
Apparent magnitude: 5.19
Distance: 479.7 light years
Coordinates (J2000): RA 313.903° · Dec 13.722°
Catalogue: HIP 103294 · HD 199253

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Other stars in Delphinus

Delphinus has 18 stars in Stelvia's catalogue. Here are a few of them.

See all 18 stars in Delphinus