HD 201298
# HD 201298

HD 201298 (HR 8090) is a solitary star located in the northern constellation Equuleus just next to 3 Equulei It has an apparent magnitude of 6.14, making it barely visible to the naked eye under ideal conditions. The star is situated at a distance of 1,140 light years but is drifting away with a heliocentric radial velocity of 20 km/s.

HD 201298 has a stellar classification of M0 III, indicating that it is ageing M-type star that is probably on the red giant branch. As a result, it has expanded to 117 times the Sun's girth. At present it has 1.83 times the mass of the Sun and shines with a luminosity of 1,648 $L_☉$ from its enlarged photosphere at an effective temperature of 3,732 K, which gives it an orange glow. HD 201298 spins leisurely with a projected rotational velocity of 4.5±1 km/s, slightly faster than most giants.

## Note

* ↑ Calculated using this equation: $M_{\mathrm {V} }=6.14-5\left(\log _{10}349-1\right)=-1.57$
