In July 2008, astronomers (Michael Endl and Martin Kürster) analyzed used seven years of differential radial velocity measurements for Proxima Centauri to submit a paper indicating that large planets are unlikely to be orbiting Sol's closest stellar neighbor within its habitable zone — around 0.022 to 0.054 AU with
a corresponding orbital period of 3.6 to 13.8 days.
Not exact matches
Their search was sensitive up to distances
corresponding to about twice the
orbital periods of these so - called hot Jupiters, or about one - tenth of the distance between Mercury and the sun.
«The Bee - Zed asteroid orbits in the opposite direction to planets: The asteroid makes a complete circuit around the Sun every 12 years,
corresponding with the
orbital period of Jupiter, which shares its orbit but travels in the opposite direction.»
These semi-major axes in turn
correspond to
orbital periods of approximately 38.2 + / - 0.8 and 25.5 + / - 0.5 days, respectively.
«The habitable zone for M - dwarfs
corresponds to an
orbital period for a planet of the order 10 to 14 days,» says Ricker.
In particular, during the last 800,000 years, the dominant
period of glacial — interglacial oscillation has been 100,000 years, which
corresponds to changes in Earth's eccentricity and
orbital inclination.
The 11 year sunspot cycle roughly
corresponds with Jupiter's
orbital period.