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Young,Eliot F.;Binzel,Richard P.(1994).„A new determination of radii and limb parameters for Pluto and Charon from mutual event lightcurves”.Icarus108(2): 219–224.Bibcode1994Icar..108..219Y.DOI:10.1006/icar.1994.1056.
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Close,Laird M.;Merline,William J.;Tholen,David J.i dr..(2000).„Adaptive optics imaging of Pluto–Charon and the discovery of a moon around the Asteroid 45 Eugenia: the potential of adaptive optics in planetary astronomy”.Proceedings of the International Society for Optical Engineering(European Southern Observatory)4007: 787–795.Bibcode2000SPIE.4007..787C.DOI:10.1117/12.390379.
Lellouch,Emmanuel;Sicardy,Bruno;de Bergh,Catherinei dr..(2009).„Pluto's lower atmosphere structure and methane abundance from high-resolution spectroscopy and stellar occultations”.Astronomy and Astrophysics495(3): L17–L21.arXiv:0901.4882.Bibcode2009A&A...495L..17L.DOI:10.1051/0004-6361/200911633.
Young,Eliot F.;Binzel,Richard P.;Crane,Keenan(2000).„A Two-Color Map of Pluto Based on Mutual Event Lightcurves”.Bulletin of the American Astronomical Society(AA(SwRI), AB(M.I.T.), AC (Boulder High School))32: 1083.Bibcode2000DPS....32.4601Y.
Lellouch,Emmanuel;Sicardy,Bruno;de Bergh,Catherinei dr..(2009).„Pluto's lower atmosphere structure and methane abundance from high-resolution spectroscopy and stellar occultations”.Astronomy and Astrophysics495(3): L17–L21.arXiv:0901.4882.Bibcode2009A&A...495L..17L.DOI:10.1051/0004-6361/200911633.
Young,Eliot F.;Binzel,Richard P.(1994).„A new determination of radii and limb parameters for Pluto and Charon from mutual event lightcurves”.Icarus108(2): 219–224.Bibcode1994Icar..108..219Y.DOI:10.1006/icar.1994.1056.
Close,Laird M.;Merline,William J.;Tholen,David J.i dr..(2000).„Adaptive optics imaging of Pluto–Charon and the discovery of a moon around the Asteroid 45 Eugenia: the potential of adaptive optics in planetary astronomy”.Proceedings of the International Society for Optical Engineering(European Southern Observatory)4007: 787–795.Bibcode2000SPIE.4007..787C.DOI:10.1117/12.390379.
Lellouch,Emmanuel;Sicardy,Bruno;de Bergh,Catherinei dr..(2009).„Pluto's lower atmosphere structure and methane abundance from high-resolution spectroscopy and stellar occultations”.Astronomy and Astrophysics495(3): L17–L21.arXiv:0901.4882.Bibcode2009A&A...495L..17L.DOI:10.1051/0004-6361/200911633.
„The Inside Story”.pluto.jhuapl.edu– NASA New Horizons mission site.Johns Hopkins University Applied Physics Laboratory.2007.Arhiviranoiz originalana datum 2018-10-05.Pristupljeno 15 February 2014.
„Colossal Cousin to a Comet?”.pluto.jhuapl.edu– NASA New Horizons mission site.Johns Hopkins University Applied Physics Laboratory.Arhiviranoiz originalana datum 2014-11-13.Pristupljeno 15 February 2014.
otkriće Harona 1978. dozvolilo je astronomima da točno izmjere masu plutonskog sustava. Ali to nije ukazivalo na individualnu masu tih dvaju tijela, koja su procijenjena tek nakon otkrića ostalih Plutonovih mjeseca 2005. Zbog toga, jer je Pluton ušao u perihel 1989, većina procjena se temeljilo na težištu Pluton-Haron. Haron je ušau u perihel 4.9. 1989. Težište Pluton–Haron je ušlo u perihel 5.9. 1989. Pluton je ušao u perihel 8.9. 1989.
Williams,David R.(7 September 2006).„Pluto Fact Sheet”.NASA.Arhiviranoiz originalana datum 2015-11-19.Pristupljeno 24 March 2007.
Williams,David R.(17 November 2010).„Planetary Fact Sheet– Metric”.NASA Goddard Space Flight Center.Arhiviranoiz originalana datum 2015-11-26.Pristupljeno 29 November 2011.
Williams,David R.(2005).„Pluto Kuiper Express”.NASA Goddard Space Flight Center.Arhiviranoiz originalana datum 2017-11-13.Pristupljeno 26 March 2007.
„Name Pluto Given to Body Believed to Be Planet X”.The New York Times.Associated Press: str.1.25 May 1930.ISSN0362-4331.»Pluto, the title of the Roman gods of the region of darkness, was announced tonight at Lowell Observatory here as the name chosen for the recently discovered trans-Neptunian body, which is believed to be the long-sought Planet X.«
Williams,David R.(17 November 2010).„Planetary Fact Sheet– Metric”.NASA Goddard Space Flight Center.Arhiviranoiz originalana datum 2015-11-26.Pristupljeno 29 November 2011.
„The Inside Story”.pluto.jhuapl.edu– NASA New Horizons mission site.Johns Hopkins University Applied Physics Laboratory.2007.Arhiviranoiz originalana datum 2018-10-05.Pristupljeno 15 February 2014.
Davies,John(2001).„Beyond Pluto (extract)”.Royal Observatory, Edinburgh.Arhiviranoiz originalana datum 2011-07-15.Pristupljeno 26 March 2007.
„Colossal Cousin to a Comet?”.pluto.jhuapl.edu– NASA New Horizons mission site.Johns Hopkins University Applied Physics Laboratory.Arhiviranoiz originalana datum 2014-11-13.Pristupljeno 15 February 2014.
„Name Pluto Given to Body Believed to Be Planet X”.The New York Times.Associated Press: str.1.25 May 1930.ISSN0362-4331.»Pluto, the title of the Roman gods of the region of darkness, was announced tonight at Lowell Observatory here as the name chosen for the recently discovered trans-Neptunian body, which is believed to be the long-sought Planet X.«