Star profile

37 Leonis

Cool red star

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

What is 37 Leonis

37 Leonis is a rare M-type red giant lying within the body of the Lion, about 586 light-years away. Its cold, enormous atmosphere tints its light a deep, almost ruddy orange, the trademark glow of suns nearing the end of stable life. Among the white and blue stars that sketch the spring lion, its warm tone stands out like a faint ember pinned to the sky.

Where it is and when to see it

37 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 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. 45 in brightness among the 80 stars of Leo in our catalogue. To find it, start from Regulus, the brightest: it lies about 3° away (a fist at arm's length covers about 10°).

The light you see today left it about 590 years ago.

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Astronomical data for 37 Leonis

Constellation: Leo
Apparent magnitude: 5.42
Distance: 585.6 light years
Coordinates (J2000): RA 154.170° · Dec 13.728°
Catalogue: HIP 50333 · HD 89056

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Other stars in Leo

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

See all 80 stars in Leo