Star profile

Psi Leonis

Cool red star

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

What is Psi Leonis

Psi Leonis is a red M2 giant whose surface burns at about 3,961 K, far cooler than the Sun yet shining 705 times brighter through sheer size: its radius is 56 solar radii. At 611 light-years, in the mane of the zodiacal Lion, it is also slightly variable, and its reddish light is the signature of an aged star near the end of its stable life as a giant.

Where it is and when to see it

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

From London it culminates about 53° 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. 41 in brightness among the 80 stars of Leo in our catalogue. To find it, start from Regulus, the brightest: it lies about 6° away (a fist at arm's length covers about 10°).

The light you see today left it about 610 years ago.

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Astronomical data for Psi Leonis

Constellation: Leo
Apparent magnitude: 5.36
Distance: 610.9 light years
Coordinates (J2000): RA 145.933° · Dec 14.022°
Catalogue: HIP 47723 · HD 84194

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

Other stars in Leo

Leo has 80 stars in Stelvia's catalogue. Here are a few of them.

See all 80 stars in Leo