The planet Kepler-186f, known as the Earth's cousin, is located about 500 light-years from Earth in the constellation Cygnus. Kepler-186f orbits about 52.4 million kilometers from its red dwarf star. The mass of a red dwarf star is about 0.48 M_s. M_s is the mass of the sun. Determine i) the orbital speed and ii) the orbital period of the Kepler 186f planet.

• A. i) v = 3.49 × 10⁴ m/s ii) T = 1090 days
• B. i) v = 3.49 × 10⁴ m/s ii) T= 109 days
• C. i) v = 4.12 × 10⁴ m/s ii) T= 9335 days
• D. i) v= 4.12 × 10⁴ m/s ii) T = 93.4 days

Answer: (B)