Нептун

**Нептун**
	Нептун, Voyager 2 көрдөрүүтэ
Арыллыыта
Арыйааччыта	Urbain Le Verrier; John Couch Adams; Johann Galle
Арыйыы датата	балаҕан ыйын 23, 1846
Designations
Adjective	Neptunian
Эргийэр иитэ
	Epoch J2000
Aphelion	4,553,946,490 km; 30.44125206 AU
Perihelion	4,452,940,833 km; 29.76607095 AU
Semi-major axis	4,503,443,661 km; 30.10366151 AU
Eccentricity	0.011214269
Orbital period	60,190 days; 164.79 years
Synodic period	367.49 day
Average orbital speed	5.43 km/s
Mean anomaly	267.767281°
Inclination	1.767975°; 6.43° to Sun's equator
Longitude of ascending node	131.794310°
Argument of perihelion	265.646853°
Satellites	13
Физика кээмэйдэрэ
Equatorial radius	24,764 ± 15 km; 3.883 Earths
Polar radius	24,341 ± 30 km; 3.829 Earths
Flattening	0.0171 ± 0.0013
Surface area	7.6408Халыып:E km²; 14.98 Earths
Volume	6.254Халыып:E km³; 57.74 Earths
Mass	1.0243×1026 kg; 17.147 Earths
Mean density	1.638 g/cm³
Equatorial surface gravity	11.15 m/s²; 1.14 g
Escape velocity	23.5 km/s
Sidereal rotation; period	0.6713 day; 16 h 6 min 36 s
Equatorial rotation velocity	2.68 km/s; 9,660 km/h
Axial tilt	28.32°
North pole right ascension	Халыып:RA
North pole declination	42.950°
Albedo	0.290 (bond); 0.41 (geom.)
Apparent magnitude	8.0 to 7.78
Angular diameter	2.2″—2.4″
Атмосферата
Scale height	19.7 ± 0.6 km
80±3.2%	Hydrogen (H2)
19±3.2%	Helium
1.5±0.5%	Methane
~0.019%	Hydrogen deuteride (HD)
~0.00015%	Ethane
Ices:
	Ammonia
	Water
	Ammonium hydrosulfide(NH4SH)
	Methane (?)

Нептун диэн Күнтэн ахсыс, ордук ыраах баар планета. Гаас планеталар ахсааннарыгар киирэр.

Быһаарыылар уларыт

↑ Hamilton, Calvin J. Neptune. Views of the Solar System (August 4, 2001). Тургутулунна 13 Атырдьах ыйын 2007.
↑ Yeomans, Donald K. HORIZONS System. NASA JPL (July 13, 2006). Тургутулунна 8 Атырдьах ыйын 2007.—At the site, go to the "web interface" then select "Ephemeris Type: ELEMENTS", "Target Body: Neptune Barycenter" and "Center: Sun".
↑ Orbital elements refer to the barycentre of the Neptune system, and are the instantaneous 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.
↑ ^4,0 ^4,1 Цитата сыыһата: Сыыһа <ref> тиэк (тег); fact2 диэн хос быһаарыыларга аналлаах тиэкис суох
↑ ^5,00 ^5,01 ^5,02 ^5,03 ^5,04 ^5,05 ^5,06 ^5,07 ^5,08 ^5,09 ^5,10 ^5,11 ^5,12 ^5,13 ^5,14 Williams, David R. Neptune Fact Sheet. NASA (September 1, 2004). Тургутулунна 14 Атырдьах ыйын 2007.
↑ ^6,0 ^6,1 ^6,2 ^6,3 P. Kenneth, Seidelmann; Archinal, B. A.; A’hearn, M. F. et al (2007). «Report of the IAU/IAGWorking Group on cartographic coordinates and rotational elements». Celestial Mechanics and Dynamical Astronomy (Springer Netherlands) 90: 155–180. DOI:10.1007/s10569-007-9072-y. ISSN (Print) 0923-2958 (Print). Проверено 2008-03-07.
↑ ^7,0 ^7,1 ^7,2 ^7,3 ^7,4 ^7,5 ^7,6 Refers to the level of 1 bar atmospheric pressure
↑ ^8,0 ^8,1 Цитата сыыһата: Сыыһа <ref> тиэк (тег); ephemeris диэн хос быһаарыыларга аналлаах тиэкис суох

[Hamilton-1] Hamilton, Calvin J. Neptune. Views of the Solar System (August 4, 2001). Тургутулунна 13 Атырдьах ыйын 2007.

[horizons-2] Yeomans, Donald K. HORIZONS System. NASA JPL (July 13, 2006). Тургутулунна 8 Атырдьах ыйын 2007.—At the site, go to the "web interface" then select "Ephemeris Type: ELEMENTS", "Target Body: Neptune Barycenter" and "Center: Sun".

[barycentre-3] Orbital elements refer to the barycentre of the Neptune system, and are the instantaneous 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.

[fact2-4] 4,0 ^4,1 Цитата сыыһата: Сыыһа <ref> тиэк (тег); fact2 диэн хос быһаарыыларга аналлаах тиэкис суох

[fact-5] 5,00 ^5,01 ^5,02 ^5,03 ^5,04 ^5,05 ^5,06 ^5,07 ^5,08 ^5,09 ^5,10 ^5,11 ^5,12 ^5,13 ^5,14 Williams, David R. Neptune Fact Sheet. NASA (September 1, 2004). Тургутулунна 14 Атырдьах ыйын 2007.

[Seidelmann2007-6] 6,0 ^6,1 ^6,2 ^6,3 P. Kenneth, Seidelmann; Archinal, B. A.; A’hearn, M. F. et al (2007). «Report of the IAU/IAGWorking Group on cartographic coordinates and rotational elements». Celestial Mechanics and Dynamical Astronomy (Springer Netherlands) 90: 155–180. DOI:10.1007/s10569-007-9072-y. ISSN (Print) 0923-2958 (Print). Проверено 2008-03-07.

[1bar-7] 7,0 ^7,1 ^7,2 ^7,3 ^7,4 ^7,5 ^7,6 Refers to the level of 1 bar atmospheric pressure

[ephemeris-8] 8,0 ^8,1 Цитата сыыһата: Сыыһа <ref> тиэк (тег); ephemeris диэн хос быһаарыыларга аналлаах тиэкис суох

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