Talk:70 Ophiuchi system/@comment-86.145.101.91-20131113011856

Just a thought but I doubt 70 Ophiuchi Bb would be tidally locked at 0.3914 AU. I calculate an Earth sized planet orbiting a star with 70% the mass or our Sun, at that distance, would take about 3.5 billion years to tidally lock. And, taking into account 70 Ophiuchi Bb's smaller size, it would probably take even longer to tidally lock than that, maybe 5 billion years or more, and the 70 Ophiuchi system is less than 2 billion years old. I didn't factor in the eccentricity of the orbit of the planet around 70 Ophiuchi B into the calculation I used to calculate the tidal locking time, so I might be over estimating the tidal locking time, somewhat.