The one above is a Quasi-sattelite http://earthsky.org/space/does-earth-have-a-second-moon http://earthsky.org/space/does-earth-have-a-second-moon An example o

The one above is a Quasi-sattelite http://earthsky.org/space/does-earth-have-a-second-moon http://earthsky.org/space/does-earth-have-a-second-moon An example of a "minimoon" : 2006 RH120 orbitted the earth in 2006 for less than a year before resuming it's orbit round the sun http://sservi.nasa.gov/articles/simulations-show-mini-moons-orbiting-earth/ http://sservi.nasa.gov/articles/simulations-show-mini-moons-...