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Pi Leonis

Star in the constellation Leo

Summary

Star in the constellation Leo

| b-v = +1.60 | u-b = +1.88

Pi Leonis, Latinised from π Leonis, is a single star in the zodiac constellation Leo. It is a red-hued star that is visible to the naked eye with an apparent visual magnitude of 4.70. This object is located at a distance of some 410 light-years from the Sun based on parallax, and is drifting further away with a radial velocity of +22 km/s. Because the star lies near the ecliptic it is subject to occultations by the Moon.

This is an evolved, red giant star with a stellar classification of M2 III. With the supply of hydrogen at its core exhausted, it has expanded to 70 times the Sun's radius. The star shines with 1,077 times the luminosity of the Sun from an expanded outer atmosphere that has an effective temperature of . According to the General Catalogue of Variable Stars, it is a suspected variable star with a maximum magnitude of 4.67.

References

| display-authors=1 | last1=Famaey | first1=B.

| display-authors=2 | last1=Samus | first1=N. N.

References

  1. {{cite DR2. 3877751153505015552
  2. (1992). "Asymptotic Giant Branch Stars Near the Sun". The Astronomical Journal.
  3. (2021). "Synthetic RGB photometry of bright stars: Definition of the standard photometric system and UCM library of spectrophotometric spectra". Monthly Notices of the Royal Astronomical Society.
  4. (2022). "Stellar and substellar companions from Gaia EDR3. Proper-motion anomaly and resolved common proper-motion pairs". Astronomy and Astrophysics.
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m-type-giants suspected-variables leo-(constellation) bayer-objects durchmusterung-objects flamsteed-objects henry-draper-catalogue-objects hipparcos-objects bright-star-catalogue-objects
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