🔭 Observational Astrophysics & Celestial Cartography

Constellation Leo: Astronomy, Stars & Meteor Showers

Beyond astrological archetypes lies one of the most recognizable constellations in the night sky. Discover the astrophysics of Alpha star Regulus, the November Leonid meteor showers, and deep-sky spiral galaxies within the Lion.

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Constellation Leo Astronomical Parameters

Physical celestial coordinates, stellar brightness, and deep-sky inventory.

Constellation Designation

Leo (The Lion) • Northern Celestial Hemisphere

Alpha Star (Brightest)

Regulus (Alpha Leonis / Cor Leonis, Magnitude 1.36)

Annual Meteor Shower

Leonids (Peak November 17–18, Radiant in Leo Sickle)

Parent Celestial Body

Comet 55P/Tempel-Tuttle (33-Year Orbital Period)

Deep Sky Objects

The Leo Triplet (M65, M66, NGC 3628 Spiral Galaxies)

Best Viewing Months

Late Winter through Spring (March – May)

Explore Leo Astronomy Articles

Meteor Shower Peak

Leonid Meteor Shower: Peak Dates, Viewing Guide & Radiant Map

Everything you need to watch the legendary November Leonids: hourly meteor rates, best dark-sky hours, and meteor storm history.

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Stellar Astrophysics

Regulus: The Royal Heart of the Lion (Alpha Leonis)

Astronomical deep dive into Regulus: a quadruple star system spinning at 96% of its breakup velocity, 79 light-years from Earth.

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Greek Mythology

The Nemean Lion Myth: Hercules & The Celestial Cat

The ancient Hellenic myth behind constellation Leo: the beast with impenetrable golden fur and its immortality among the stars.

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How to Spot Constellation Leo Tonight

Locate the Big Dipper in the northern sky. Follow the two pointer stars at the back of the Dipper's bowl southwards across the sky until you spot a distinctive backwards question mark (the "Sickle" of Leo) terminating in the brilliant blue-white star Regulus.