
Star profile
54 Leonis
What is 54 Leonis
54 Leonis burns white at nearly 287 light-years, an A-type flame among the hind paws of the Lion. Its cold, clean light crossed almost three centuries before brushing the early telescopes that catalogued it. On moonless nights the trained eye finds it as a quiet pearl near the curve John Flamsteed once mapped in the eighteenth century.
Where it is and when to see it
54 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 63° above the horizon.
- From New York it culminates about 74° above the horizon.
- From Sydney it culminates about 31° above the horizon.
It can be seen from anywhere north of 65° S.
It ranks no. 14 in brightness among the 80 stars of Leo in our catalogue. To find it, start from Regulus, the brightest: it lies about 17° away (a fist at arm's length covers about 10°).
The light you see today left it about 290 years ago.
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Astronomical data for 54 Leonis
- Constellation
- Leo
- Apparent magnitude
- 4.30
- Distance
- 286.9 light years
- Coordinates (J2000)
- RA 163.903° · Dec 24.750°
- Catalogue
- HIP 53417 · HD 94601
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Other stars in Leo
Leo has 80 stars in Stelvia's catalogue. Here are a few of them.
- RegulusAlpha Leonis1.36
- AlgiebaGamma 1 Leonis2.01
- DenebolaBeta Leonis2.14
- RasalasMu Leonis3.88
- Iota Leonis4.00
- Sigma Leonis4.05
- Upsilon Leonis4.30
- AlterfLambda Leonis4.32