| − | Nereid is in a highly eccentric [[orbit]] around Neptune, and in fact its orbit is the most eccentric orbit of any [[solar system]] body.<ref name=Arnett>Arnett, Bill. "[http://www.nineplanets.org/nereid.html Entry for Nereid]." ''The <s>Nine</s> 8 Planets'', May 6, 1995. Accessed June 8, 2008.</ref> Its sidereal month is about 360.14 [[Julian]] days. Nereid is inclined about 28 [[degrees]] from Neptune's equator, but is inclined only 7.23 degrees from the local Laplace plane.<ref name=neptunesatfact/> Almost no astronomer believes that Nereid formed with the planet, and most astronomers believe that Neptune is a captured [[Kuiper belt]] or other [[Trans-Neptunian objects|trans-Neptunian object]].<ref name=Tytell>Tytell, David. "[http://www.skyandtelescope.com/news/3308056.html?page=1&c=y Neptune's Stowaway]." ''Sky and Telescope'', September 11, 2003. Accessed June 8, 2008.</ref> | + | Nereid is in a highly eccentric [[orbit]] around Neptune, and in fact its orbit is the most eccentric orbit of any [[solar system]] body.<ref name=Arnett>Arnett, Bill. "[http://www.nineplanets.org/nereid.html Entry for Nereid]." ''The <s>Nine</s> 8 Planets'', May 6, 1995. Accessed June 8, 2008.</ref> Its sidereal month is about 360.14 [[Julian]] days. Nereid's orbit is inclined about 28 [[degrees]] from Neptune's equator, but is inclined only 7.23 degrees from the local Laplace plane.<ref name=neptunesatfact/> Almost no astronomer believes that Nereid formed with the planet, and most astronomers believe that Nereid is a captured [[Kuiper belt]] or other [[Trans-Neptunian objects|trans-Neptunian object]].<ref name=Tytell>Tytell, David. "[http://www.skyandtelescope.com/news/3308056.html?page=1&c=y Neptune's Stowaway]." ''Sky and Telescope'', September 11, 2003. Accessed June 8, 2008.</ref> |