1I/Planetary system

first interstellar object detected passing through the Solar System. Formally designated 1I/2017 U1, it was discovered by Robert Weryk using the Pan-STARRS

inertial (ECI) Geodetic system International Terrestrial Reference System and Frame (ITRS) Orbital state vectors Planetary coordinate system Leick, Alfred (2004)

of hyperbolic comets List of non-periodic comets List of periodic comets 1I/ʻOumuamua 2I/Borisov C/1980 E1 (Bowell) de la Fuente Marcos, Carlos; de la

Japan, from 4.3 Ma to the present". Global and Planetary Change. 163: 1–9. Bibcode:2018GPC...163....1I. doi:10.1016/j.gloplacha.2018.02.001. Retrieved

is a formulaic prediction of spacing between planets in any given planetary system. The formula suggests that, extending outward, each planet should be