Star profile

Iota Coronae Borealis

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

What is Iota Coronae Borealis

Iota Coronae Borealis is a white star about 312 light-years away, set into the curved diadem of the Northern Crown. That small constellation, a perfect semicircle between Boötes and Hercules, looks drawn with a compass. Iota is one of the points that hold the arc —a quiet brightness that lends geometric continuity to the tale of Ariadne and her gifted crown.

Where it is and when to see it

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

From London it culminates about 68° above the horizon.
From New York it culminates about 79° above the horizon.
From Sydney it culminates about 26° above the horizon.

It can be seen from anywhere north of 60° S.

It ranks no. 11 in brightness among the 26 stars of Corona Borealis in our catalogue. To find it, start from Alphecca, the brightest: it lies about 7° away (a fist at arm's length covers about 10°).

The light you see today left it about 310 years ago.

Find it on the sky map

It opens in your browser. Free, no account, nothing to install.

Leave your signature on Iota Coronae Borealis

Your name and a message go up on the map for everyone to read. Signing is free.

Without a lock, someone else can replace your signature. How the lock works

We'll ask for an email to confirm it's you, no password.

Write my signature

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 Iota Coronae Borealis

Constellation: Corona Borealis
Apparent magnitude: 4.98
Distance: 311.9 light years
Coordinates (J2000): RA 240.361° · Dec 29.851°
Catalogue: HIP 78493 · HD 143807

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

Other stars in Corona Borealis

Corona Borealis has 26 stars in Stelvia's catalogue. Here are a few of them.

See all 26 stars in Corona Borealis