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We report the discovery of a pair of exoplanets co-orbiting the red dwarfstar GJ3470. The larger planet, GJ3470-d, was observed in a 14.9617-days orbitand the smaller planet, GJ3470-e, in a 14.9467-days orbit. GJ3470-d issub-Jupiter size with a 1.4% depth and a duration of 3 hours, 4 minutes. Thesmaller planet, GJ3470-e, currently leads the larger planet by approximately1.146-days and is extending that lead by about 7.5-minutes (JD 0.0052) perorbital cycle. It has an average depth of 0.5% and an average duration of 3hours, 2 minutes. The larger planet, GJ3470-d, has been observed on sevenseparate occasions over a 3-year period, allowing for a very precise orbitalperiod calculation. The last transit was observed by three separateobservatories in Oklahoma and Arizona. The smaller planet, GJ3470-e, has beenobserved on five occasions over 2-years. Our data appears consistent with twoexoplanets in a Horseshoe Exchange orbit. When confirmed, these will be thesecond and third exoplanets discovered and characterized by amateur astronomerswithout professional data or assistance. It will also be the first everdiscovery of co-orbiting exoplanets in a Horseshoe Exchange orbit.

GJ3470-d and GJ3470-e: Discovery of Co-Orbiting Exoplanets in a Horseshoe Exchange Orbit