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7 Comae Berenices

Star in the constellation Coma Berenices

| b-v = 0.957

7 Comae Berenices is a single star located 249 light years away in the northern constellation of Coma Berenices. It is a dim star but visible to the naked eye near the Coma Star Cluster with an apparent visual magnitude of 4.93. The star is moving closer to the Earth with a heliocentric radial velocity of −28 km/s, and is predicted to come as close as 25.42 pc in 2.4 million years.

This is an evolved giant star with a stellar classification of G8 III–IIIb. At the age of 730 million years it is a red clump giant, which indicates it is on the horizontal branch and is generating energy via helium fusion at its core. The star has 2.4 times the mass of the Sun and has expanded to 10 times the Sun's radius. It is radiating about 63 times the Sun's luminosity from its enlarged photosphere at an effective temperature of 5,023 K.

References

| display-authors=1 | journal=Astronomy & Astrophysics

| display-authors=1 | last1=Mishenina | first1=T. V.

References

"7 Com".

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g-type-giants horizontal-branch-stars coma-berenices durchmusterung-objects flamsteed-objects henry-draper-catalogue-objects hipparcos-objects bright-star-catalogue-objects

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