An exoplanet is detected in a circular orbit around a nearby star, completing one full orbit every 4.20 days4.20\text{ days}4.20 days. What is the angular speed of the exoplanet in its orbit?
2.76×10−6 rad s−12.76 \times 10^{-6} \text{ rad s}^{-1}2.76×10−6 rad s−1
8.66×10−6 rad s−18.66 \times 10^{-6} \text{ rad s}^{-1}8.66×10−6 rad s−1
1.73×10−5 rad s−11.73 \times 10^{-5} \text{ rad s}^{-1}1.73×10−5 rad s−1
4.16×10−4 rad s−14.16 \times 10^{-4} \text{ rad s}^{-1}4.16×10−4 rad s−1
