|
| discovery = yes
| discoverer = [[Урбен Леверье]]<br /> [[Джон Адамс]]<br /> [[Йохан Галь]]
| discovered = [[September 23]], [[1846]]<ref name=Hamilton>{{cite web
| first=Calvin J. | last=Hamilton | date=[[August 4]], [[2001]]
| url=http://www.solarviews.com/eng/neptune.htm
| title=Neptune |publisher=Views of the Solar System
| accessdate=2007-08-13}}</ref>
| orbit_ref =
<ref name=horizons>{{cite web
| first=Donald K. | last=Yeomans | date =[[July 13]], [[2006]]
| url = http://ssd.jpl.nasa.gov/?horizons
| title = HORIZONS System | publisher = NASA JPL
| accessdate = 2007-08-08 }}—At the site, go to the "web interface" then select "Ephemeris Type: ELEMENTS", "Target Body: Neptune Barycenter" and "Center: Sun".</ref><ref name=barycentre>Orbital elements refer to the barycentre of the Neptune system, and are the instantaneous [[osculating orbit|osculating]] values at the precise [[J2000]] epoch. Barycentre quantities are given because, in contrast to the planetary centre, they do not experience appreciable changes on a day-to-day basis from to the motion of the moons.</ref>
| epoch = [[J2000]]
| aphelion = 4,553,946,490 [[Kilometre|km]]<br />30.44125206 [[Astronomical unit|AU]]
| semimajor = 4,503,443,661 km<br />30.10366151 AU
| eccentricity = 0.011214269
| period = 60,190<ref name="ref" /> [[day]]s<br />164.79 [[julian year (astronomy)|years]]
| synodic_period = 367.49 day<ref name="fact">
| inclination = 1.767975°<br />6.43° to Sun's equator ▼{{cite web
| url = http://nssdc.gsfc.nasa.gov/planetary/factsheet/neptunefact.html
| title = Neptune Fact Sheet
| date = [[September 1]], [[2004]]
| publisher = NASA | accessdate = 2007-08-14
| last = Williams |first = David R. }}</ref>
| avg_speed = 5.43 km/s<ref name="fact"/>
▲| inclination = 1.767975°<br />6.43° to Sun's equator
| asc_node = 131.794310°
| arg_peri = 265.646853°
| satellites = [[Moons of Neptune|13]]
| physical_characteristics = yes
| flattening = 0.0171 ± 0.0013 <!-- calculated= from24,764 data± in15 km ref<br name=Seidelmann2007 --/>3.883 Earths
| equatorial_radius = 24,764 ± 15 km<ref name=Seidelmann2007>{{cite journal
| first=Seidelmann | last=P. Kenneth
| coauthors=Archinal, B. A.; A’hearn, M. F. et al
| title= Report of the IAU/IAGWorking Group on cartographic coordinates and rotational elements
| journal=Celestial Mechanics and Dynamical Astronomy
| volume=90 | pages=155–180 | year=2007
| doi=10.1007/s10569-007-9072-y | issn =0923-2958 (Print)
| url=http://adsabs.harvard.edu/doi/10.1007/s10569-007-9072-y
|publisher=Springer Netherlands | accessdate=2008-03-07 }}</ref><ref name=1bar>Refers to the level of 1 bar atmospheric pressure</ref><br />3.883 Earths
| polar_radius = 24,341 ± 30 km<ref name=Seidelmann2007/><ref name=1bar/><br />3.829 Earths
| surface_area = 7.6408{{e|9}} km²<ref name=1bar/><ref name="fact2"/><br />14.98 Earths
| volume = 6.254{{e|13}} km³<ref name="fact"/><ref name=1bar/><br />57.74 Earths
| mass = 1.0243×10<sup>26</sup> kg<ref name="fact"/><br />17.147 Earths
| density = 1.638 g/cm³<ref name="fact"/><ref name=1bar/>
| surface_grav = 11.15 [[Acceleration|m/s²]]<ref name="fact"/><ref name=1bar/><br />1.14 [[g-force|''g'']]
| escape_velocity = 23.5 km/s<ref name="fact"/><ref name=1bar/>
| sidereal_day = 0.6713 day<ref name="fact"/><br />16 h 6 min 36 s
| rot_velocity = 2.68 km/s<br />9,660 km/h
| axial_tilt = 28.32°<ref name="fact"/>
| right_asc_north_pole = {{RA|19|57|20}}<ref name=Seidelmann2007/>
| magnitude = 8.0 to 7.78
| declination = 42.950°<ref name=Seidelmann2007/>
| albedoangular_size = 02.290 (2[[BondMinute albedoof arc|bond″]])<br />—2.4″
0.41 ([[Geometric albedo|geom.]])<ref name="fact"/>
| magnitude = 8.0 to 7.78<ref name="fact"/><ref name=ephemeris/>
| angular_size = 2.2[[Minute of arc|″]]—2.4″<ref name="fact"/><ref name=ephemeris/>
| temperatures = yes
| temp_name1 = 1 bar level
| min_temp_1 =
| mean_temp_1 = 72 [[Kelvin|K]]<ref name="fact"/>
| max_temp_1 =
| temp_name2 = 0.1 bar
| min_temp_2 =
| mean_temp_2 = 55 K<ref name="fact"/>
| max_temp =
| adjectives = Neptunian
| atmosphere = yes
| atmosphere_ref =
| scale_height = 19.7 ± 0.6 km ▼<ref name="fact"/>
▲| scale_height = 19.7 ± 0.6 km
| atmosphere_composition =
<table>
| 