Neptun: Perbezaan antara semakan
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{{Portal|Astronomi}}{{Infobox Planet |
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| bgcolour = #97C3F4 |
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| name = Neptun |
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| symbol = [[Fail:Neptune symbol.svg|25px|Astronomical symbol of Neptune]] |
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| image = [[Fail:neptune.jpg|240px|Neptune dari Voyager 2]] |
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| caption = Klik Imej untuk perincian |
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| discovery = yes |
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| discoverer = [[Urbain Le Verrier]]<br /> [[John Couch Adams]]<br /> [[Johann Gottfried Galle|Johann Galle]] |
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| discovered = [[September 23]], [[1846]] |
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| epoch = [[J2000]] |
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| aphelion = 4,536,874,325 km<br />30.327 131 69 AU |
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| perihelion = 4,459,631,496 km<br />29.810 795 27 AU |
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| semimajor = [[1 E12 m|4,498,252,900]] [[kilometre|km]]<br />30.068 963 48 [[Astronomical unit|AU]] |
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| orbital_circ = 28.263 [[Tera|T]][[metre|m]]<br />188.925 AU |
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| eccentricity = 0.008 585 87 |
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| sidereal_period = [[1 E9 s|60,223.3528]] [[day]]<br />(164.88 [[julian year (astronomy)|yr]]) |
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| synodic_period = 367.49 day |
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| avg_speed = 5.432 km/s |
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| max_speed = 5.479 km/s |
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| min_speed = 5.385 km/s |
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| inclination = 1.769 17°<br />(6.43° to Sun's equator) |
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| asc_node = 131.721 69° |
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| arg_perihelion = 273.249 66° |
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| satellites = 13 |
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| physical_characteristics = yes |
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| oblateness = 0.0171 |
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| equatorial_radius = [[1 E7 m|24,764]] km [http://www.onasch.de/astro/showobject.php?lang=en&head=f&anim=129&obj=p08]<br />(3.883 Earths) |
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| polar_radius = 24,341 km<br />(3.829 [[Earth]]s) |
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| surface_area = [[1 E15 m2|7.619×10<sup>9</sup>]] [[square kilometre|km²]]<br />(14.94 Earths) |
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| volume = 6.254×10<sup>13</sup> [[cubic kilometre|km³]]<br />(57.74 Earths) |
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| mass = 1.0243×10<sup>26</sup> [[kilogram|kg]]<br />(17.147 Earths) |
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| density = 1.638 g/cm³ |
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| surface_grav = 11.15 [[Acceleration|m/s<sup>2</sup>]]<br />(1.14 [[Acceleration due to gravity|g]]) (At 1 [[bar (unit)|bar]]) |
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| escape_velocity = 23.5 km/s |
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| sidereal_day = 16.11 h (16 j 6 min 36 s) [http://www.hnsky.org/iau-iag.htm <sup>1</sup>] |
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| rot_velocity = 2.68 km/s = 9660 km/j (di khatulistiwa) |
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| axial_tilt = 28.32° |
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| right_asc_north_pole = 299.33° (19 j 57 min 20 s) |
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| declination = 42.95° |
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| albedo = 0.41 |
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| temperatures = yes |
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| temp_name1 = [[Kelvin]] |
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| min_temp_1 = 50 K |
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| mean_temp_1 = [[1 E1 K|53 K]] |
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| max_temp_1 = N/A |
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| adjectives = Neptunian |
| adjectives = Neptunian |
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| atmosphere = yes |
| atmosphere = yes |
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| surface_pressure = ≫<!--Much greater than-->100 [[Pascal (unit)|kPa]] |
| surface_pressure = ≫<!--Much greater than-->100 [[Pascal (unit)|kPa]] |
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| atmosphere_composition = 80% ±3.2% [[Hidrogen]] - H<sub>2</sub><br />19% ±3.2% [[Helium]] - He<br />1.5% ±0.5% [[Metana]] - CH<sub>4</sub><br />192 [[Parts per million|ppm]] [[Deuterium|Hidrogen Deuterida]] - HD<br />1.5 ppm [[Etana]] - C<sub>2</sub>H<sub>6</sub> |
| atmosphere_composition = 80% ±3.2% [[Hidrogen]] - H<sub>2</sub><br />19% ±3.2% [[Helium]] - He<br />1.5% ±0.5% [[Metana]] - CH<sub>4</sub><br />192 [[Parts per million|ppm]] [[Deuterium|Hidrogen Deuterida]] - HD<br />1.5 ppm [[Etana]] - C<sub>2</sub>H<sub>6</sub>ijjoiKi/i8u/u |
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* 5,913.5 juta kilometer ke [[Pluto]]. |
* 5,913.5 juta kilometer ke [[Pluto]]. |
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Terdapat juga lingkaran [[asteroid]] yang kebanyakannya mengelilingi [[matahari]] di antara orbit planet Marikh dan Musytari. Disebabkan oleh putaran, garis pusat |
Terdapat juga lingkaran [[asteroid]] yang kebanyakannya mengelilingi [[matahari]] di antara orbit planet Marikh dan Musytari. Disebabkan oleh putaran, garis pusat a [[garis khatulistiwa]] adalah terpanjang bagi setiap planet dan [[bintang]]. |
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{{sistem_suria}} |
{{sistem_suria}} |
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Semakan pada 01:39, 2 Jun 2014
N/A
| adjectives = Neptunian
| atmosphere = yes
| surface_pressure = ≫100 kPa
| atmosphere_composition = 80% ±3.2% Hidrogen - H2
19% ±3.2% Helium - He
1.5% ±0.5% Metana - CH4
192 ppm Hidrogen Deuterida - HD
1.5 ppm Etana - C2H6ijjoiKi/i8u/u
}}
Neptun merupakan salah sebuah dari sembilan planet dalam sistem suria. Senarai planet dan jarak purata planet dengan matahari dalam sistem suria adalah seperti berikut :-
- 57.9 juta kilometer ke Utarid
- 108.2 juta kilometer ke Zuhrah
- 149.6 juta kilometer ke Bumi
- 227.9 juta kilometer ke Marikh
- 778.3 juta kilometer ke Musytari
- 1,427.0 juta kilometer ke Zuhal
- 2,871.0 juta kilometer ke Uranus
- 4,497.0 juta kilometer ke Neptun
- 5,913.5 juta kilometer ke Pluto.
Terdapat juga lingkaran asteroid yang kebanyakannya mengelilingi matahari di antara orbit planet Marikh dan Musytari. Disebabkan oleh putaran, garis pusat a garis khatulistiwa adalah terpanjang bagi setiap planet dan bintang.
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