Star profile

16 Persei

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

What is 16 Persei

16 Persei beats in quiet pulses. It is a yellow-white F2III giant some 121 light-years away, classified as a Delta Scuti variable: its brightness wavers in short, near-imperceptible cycles. It spins fast —around 150 km/s at the equator— smearing its spectral lines like ink dragged by wind. A faint visual companion drifts a few arcseconds away, a quiet shadow in the same Perseus field.

Where it is and when to see it

16 Persei 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 77° above the horizon.
From New York it culminates about 88° above the horizon.
From Sydney it culminates about 18° above the horizon.

It can be seen from anywhere north of 52° S.

It ranks no. 19 in brightness among the 99 stars of Perseus in our catalogue. To find it, start from Mirfak, the brightest: it lies about 13° away (a fist at arm's length covers about 10°).

The light you see today left it about 120 years ago.

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Astronomical data for 16 Persei

Constellation: Perseus
Apparent magnitude: 4.22
Distance: 120.8 light years
Coordinates (J2000): RA 42.646° · Dec 38.319°
Catalogue: HIP 13254 · HD 17584

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Other stars in Perseus

Perseus has 99 stars in Stelvia's catalogue. Here are a few of them.

See all 99 stars in Perseus