Astronomical Characteristics
In Brackett's Solar System, Venus is the second planet from the Sun. It is very similar in size and composition to the Earth, and is even wetter and possesses a richer biosphere.
Venus circles the Sun in a Venusian year of 224.7 Earth-days. The day of Brackett's Venus is longer than Earth's (The Moon That Vanished) but the length is unspecified; it is clear, however, that Venus is not tidally locked to the Sun and undergoes a regular day-night cycle. The axial tilt of Venus is likely small, as there appears to be little in the way of seasonal variation.
Read more about this topic: Venus In The Fiction Of Leigh Brackett