Levison, Harold F.; Donnes, Luke (2007). «Comet Populations and Cometary Dynamics». En Lucy Ann Adams McFadden; Paul Robert Weissman; Torrence V. Johnson, eds. Encyclopedia of the Solar System (2nd edición). Amsterdam; Boston: Academic Press. pp. 575–588. ISBN978-0-12-088589-3.
Lucy Ann Adams McFadden; Paul Robert Weissman; Torrence V. Johnson (eds.). «Comet Populations and Cometary Dynamics». Encyclopedia of the Solar System (2nd ed.). Amsterdam; Boston: Academic Press.
Stern, Alan; Colwell, Joshua E. (1997). «Collisional erosion in the primordial Edgeworth-Kuiper belt and the generation of the 30–50 AU Kuiper gap». The Astrophysical Journal490 (2): 879-882. Bibcode:1997ApJ...490..879S. doi:10.1086/304912.
Stern, Alan; Colwell, Joshua E. (1997). «Collisional erosion in the primordial Edgeworth-Kuiper belt and the generation of the 30–50 AU Kuiper gap». The Astrophysical Journal490 (2): 879-882. Bibcode:1997ApJ...490..879S. doi:10.1086/304912.
CT Kowal; W Liller; BG Marsden (1977). «The discovery and orbit of /2060/ Chiron». In: Dynamics of the Solar System; Proceedings of the Symposium (Hale Observatories, Harvard–Smithsonian Center for Astrophysics) 81: 245. Bibcode:1979IAUS...81..245K.
JV Scotti; DL Rabinowitz; CS Shoemaker; EM Shoemaker; DH Levy; TM King; EF Helin; J Alu; K Lawrence; RH McNaught; L Frederick; D Tholen; BEA Mueller (1992). «1992 AD». IAU Circ.5434: 1. Bibcode:1992IAUC.5434....1S.
Oort, J. H. (1950). «The structure of the cloud of comets surrounding the Solar System and a hypothesis concerning its origin». Bull. Astron. Inst. Neth.11: 91. Bibcode:1950BAN....11...91O.
IAU: Minor Planet Center (3 de enero de 2011). «List Of Centaurs and Scattered-Disk Objects». Central Bureau for Astronomical Telegrams, Harvard-Smithsonian Center for Astrophysics. Consultado el 3 de enero de 2011.
nasa.gov
svs.gsfc.nasa.gov
«Where is the Edge of the Solar System?». Goddard Media Studios. NASA's Goddard Space Flight Center. 5 de septiembre de 2017. Consultado el 22 de septiembre de 2019.