Discovery of Earth's quasi-satellite

Details Discovery of Earth's quasi-satellite Discovery of Earth's quasi-satellite

Aug 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004m%26ps...39.1251c&link_type=abstract

Meteoritics & Planetary Science, Vol. 39, No. 8, p.1251-1255

Computer Science

10

Scientific paper

The newly discovered asteroid 2003 YN107 is currently a quasi-satellite of the Earth, making a satellite-like orbit of high inclination with apparent period of one year. The term quasisatellite is used since these large orbits are not completely closed, but rather perturbed portions of the asteroid's orbit around the Sun. Due to its extremely Earth-like orbit, this asteroid is influenced by Earth's gravity to remain within 0.1 AU of the Earth for approximately 10 years (1997 to 2006). Prior to this, it had been on a horseshoe orbit closely following Earth's orbit for several hundred years. It will re-enter such an orbit, and make one final libration of 123 years, after which it will have a close interaction with the Earth and transition to a circulating orbit. Chaotic effects limit our ability to determine the origin or fate of this object.

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