Нептун

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

Нептун  

Нептун, Voyager 2 көрдөрүүтэ
Арыллыыта
Арыйааччыта	Urbain Le Verrier John Couch Adams Johann Galle
Арыйыы датата	балаҕан ыйын 23, 1846[1]
Designations
Adjective	Neptunian
Эргийэр иитэ[2][3]
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[4] days 164.79 years
Synodic period	367.49 day[5]
Average orbital speed	5.43 km/s[5]
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[6][7] 3.883 Earths
Polar radius	24,341 ± 30 km[6][7] 3.829 Earths
Flattening	0.0171 ± 0.0013
Surface area	7.6408Халыып:E km²[4][7] 14.98 Earths
Volume	6.254Халыып:E km³[5][7] 57.74 Earths
Mass	1.0243×1026 kg[5] 17.147 Earths
Mean density	1.638 g/cm³[5][7]
Equatorial surface gravity	11.15 m/s²[5][7] 1.14 g
Escape velocity	23.5 km/s[5][7]
Sidereal rotation period	0.6713 day[5] 16 h 6 min 36 s
Equatorial rotation velocity	2.68 km/s 9,660 km/h
Axial tilt	28.32°[5]
North pole right ascension	Халыып:RA[6]
North pole declination	42.950°[6]
Albedo	0.290 (bond) 0.41 (geom.)[5]
Surface temp.    1 bar level    0.1 bar	min mean max 72 K[5] 55 K[5]
Apparent magnitude	8.0 to 7.78[5][8]
Angular diameter	2.2″—2.4″[5][8]
Атмосферата[5]
Scale height	19.7 ± 0.6 km
Composition	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 (?)