HD 93963
Star system in the constellation of Leo Minor
From Wikipedia, the free encyclopedia
HD 93963 is a binary star in the constellation Leo Minor. At an apparent magnitude of +9.18, it is not visible to the naked eye. Parallax measurements give a distance of 268 light-years (82.3 parsecs) and 273 light-years (83.8 parsecs) for the primary and secondary component, respectively. Interstellar extinction causes the system's magnitude to be reduced by 0.10±0.05 magnitudes.[6]
Characteristics
The primary, HD 93963 A, is main sequence star[6] of class G0V.[6] The star has a mass 1.11 times that of the Sun and a radius 1.043 times solar. It irradiates 25% more luminosity than the Sun and has an effective temperature of 5,987 K,[6] giving it a yellowish-white hue as typical of G-type stars.[8]
The companion, HD 93963 B, is a red dwarf star of class M5V. The star has 0.16 times the mass and 0.20 times the radius of the Sun, with a cool effective temperature of 3,060 K. It has a projected separation of 484 au from the primary.[6]
Planetary system
Two planets have been discovered around the primary star in 2022 with the joint use of transit photometry and radial velocity.[6]
- HD 93963 A b is a super-Earth with an orbital period of 1.04 days. It orbits at a semi-major axis of 0.0209 AU and shows an inclination of 86.21 degrees. The planet has a radius of 1.35±0.042 Earth radii. Its mass estimate sits at 7.8±3.2 Earth masses.[6]
- HD 93963 A c is a sub-Neptune planet that completes an orbit every 3.65 days. Its radius measures 3.228±0.059 Earth radii and its mass measures 19.2±4.1 Earth masses.[6]