(length of time for an orbiting object to complete one cycle)
An orbital period is the length of time that an orbiting object
uses to make one circuit around the body it is orbiting.
The time unit year is the Earth's orbital period.
- A synodic period is an orbital period based upon comparison with another object, such as the Moon's orbital period as seen from Earth based upon its relation with the position of the Sun as seen from Earth.
- A sidereal period is the "full" period, generally based upon comparison with stars so distant they are stationary by comparison.
55 Cancri e (55 Cnc e)
51 Pegasi b (51 Peg b)
hot Jupiter (HJ)
minimum mass (m sin i)
semi-major axis (a)
stellar mass determination
stellar parameter determination