ᱵᱚᱸᱜᱟ ᱮᱸᱜᱮᱞ

ᱵᱚᱸᱜᱟ ᱮᱸᱜᱮᱞ
Discovery
Discovered by	William Herschel
Discovery date	ᱦᱩᱲᱟᱹᱜ : ᱚᱢᱟᱱᱚᱛ ᱚᱠᱛᱚ ᱾
Designations
Pronunciation	/ˈjʊərənəs/ or /jʊˈreɪnəs/
Named after	the Latin form Ūranus of the Greek god Οὐρανός Ouranos
Adjectives	Uranian /jʊˈreɪniən/
Orbital characteristics
	Epoch J2000
Aphelion	20.11 AU; (3008 Gm)
Perihelion	18.33 AU; (2742 Gm)
Semi-major axis	19.2184 AU; (2,875.04 Gm)
Eccentricity	0.046381
Orbital period	84.0205 yr; 30,688.5 d; 42,718 Uranian solar days;
Synodic period	369.66 days
Average orbital speed	6.80 km/s
Mean anomaly	142.238600°
Inclination	0.773° to ecliptic; 6.48° to Sun's equator; 1.02° to invariable plane
Longitude of ascending node	74.006°
Argument of perihelion	96.998857°
Known satellites	27
Physical characteristics
Mean radius	25,362±7 km
Equatorial radius	25,559±4 km; 4.007 Earths
Polar radius	24,973±20 km; 3.929 Earths
Flattening	0.0229±0.0008
Circumference	159,354.1 km
Surface area	8.1156×109 km2 ; 15.91 Earths
Volume	6.833×1013 km3 ; 63.086 Earths
Mass	(8.6810±0.0013)×1025 kg ; 14.536 Earths ; GM=5,793,939±13 km3/s2
Mean density	1.27 g/cm3
Surface gravity	8.69 m/s2; 0.886 g
Moment of inertia factor	0.23 (estimate)
Escape velocity	21.3 km/s
Sidereal rotation period	−0.71833 d (retrograde); 17 h 14 min 24 s
Equatorial rotation velocity	2.59 km/s ; 9,320 km/h
Axial tilt	97.77° (to orbit)
North pole right ascension	ᱪᱷᱟᱸᱪ:RA; 257.311°
North pole declination	−15.175°
Albedo	0.300 (Bond); 0.488 (geom.)
Apparent magnitude	5.38 to 6.03
Angular diameter	3.3″ to 4.1″
Atmosphere
Scale height	27.7 km
Composition by volume	(Below 1.3 bar); Gases: 83 ± 3% hydrogen (H; 2); 15 ± 3% helium (He); 2.3% methane (CH; 4); 0.009% (0.007–0.015%) hydrogen deuteride (HD); hydrogen sulfide (H; 2S); Ices: ammonia (NH; 3); water (H; 2O); ammonium hydrosulfide (NH; 4SH); methane hydrate;

ᱪᱤᱱᱦᱟᱹ: ᱾

ᱵᱟᱷᱨᱤ ᱰᱷᱟᱸᱪᱟ

ᱥᱟᱹᱠᱷᱭᱟᱹᱛ

↑ ᱛᱩᱢᱟᱹᱞ ᱦᱩᱲᱟᱹᱜ:Invalid <ref> tag; no text was provided for refs named OED
↑ ᱛᱩᱢᱟᱹᱞ ᱦᱩᱲᱟᱹᱜ:Invalid <ref> tag; no text was provided for refs named BBCOUP
↑ "Uranian". Oxford English Dictionary (3rd ed.). Oxford University Press. September 2005. (Subscription or UK public library membership required.)
↑ ᱛᱩᱢᱟᱹᱞ ᱦᱩᱲᱟᱹᱜ:Invalid <ref> tag; no text was provided for refs named VSOP87
1 2 3 ᱛᱩᱢᱟᱹᱞ ᱦᱩᱲᱟᱹᱜ:Invalid <ref> tag; no text was provided for refs named nasafact
↑ ᱛᱩᱢᱟᱹᱞ ᱦᱩᱲᱟᱹᱜ:Invalid <ref> tag; no text was provided for refs named CSeligman
1 2 3 4 5 6 7 8 9 ᱛᱩᱢᱟᱹᱞ ᱦᱩᱲᱟᱹᱜ:Invalid <ref> tag; no text was provided for refs named fact
↑ ᱛᱩᱢᱟᱹᱞ ᱦᱩᱲᱟᱹᱜ:Invalid <ref> tag; no text was provided for refs named meanplane
1 2 3 4 5 6 7 ᱛᱩᱢᱟᱹᱞ ᱦᱩᱲᱟᱹᱜ:Invalid <ref> tag; no text was provided for refs named Seidelmann Archinal A'hearn et al. 2007
↑ ᱛᱩᱢᱟᱹᱞ ᱦᱩᱲᱟᱹᱜ:Invalid <ref> tag; no text was provided for refs named Jacobson Campbell et al. 1992
↑ de Pater, Imke; Lissauer, Jack J. (2015). Planetary Sciences (2nd updated ed.). New York: Cambridge University Press. p. 250. ISBN 978-0521853712.
↑ ᱛᱩᱢᱟᱹᱞ ᱦᱩᱲᱟᱹᱜ:Invalid <ref> tag; no text was provided for refs named Pearl_et_al_Uranus
↑ ᱛᱩᱢᱟᱹᱞ ᱦᱩᱲᱟᱹᱜ:Invalid <ref> tag; no text was provided for refs named Mallama_et_al
↑ ᱛᱩᱢᱟᱹᱞ ᱦᱩᱲᱟᱹᱜ:Invalid <ref> tag; no text was provided for refs named Podolak Weizman et al. 1995
1 2 ᱛᱩᱢᱟᱹᱞ ᱦᱩᱲᱟᱹᱜ:Invalid <ref> tag; no text was provided for refs named Lunine 1993
1 2 ᱛᱩᱢᱟᱹᱞ ᱦᱩᱲᱟᱹᱜ:Invalid <ref> tag; no text was provided for refs named Mallama_and_Hilton
↑ ᱛᱩᱢᱟᱹᱞ ᱦᱩᱲᱟᱹᱜ:Invalid <ref> tag; no text was provided for refs named Lindal Lyons et al. 1987
↑ ᱛᱩᱢᱟᱹᱞ ᱦᱩᱲᱟᱹᱜ:Invalid <ref> tag; no text was provided for refs named Conrath Gautier et al. 1987
↑ Irwin, Patrick G. J.; et al. (23 April 2018). "Detection of hydrogen sulfide above the clouds in Uranus's atmosphere" (PDF). Nature Astronomy. 2 (5): 420–427. Bibcode:2018NatAs...2..420I. doi:10.1038/s41550-018-0432-1. hdl:2381/42547.

↑ These are the mean elements from VSOP87, together with derived quantities.
1 2 3 4 5 6 7 ᱛᱩᱢᱟᱹᱞ ᱦᱩᱲᱟᱹᱜ:Invalid <ref> tag; no text was provided for refs named atmospheric pressure
↑ Calculated using data from Seidelmann, 2007.^[᱙]
↑ ᱛᱩᱢᱟᱹᱞ ᱦᱩᱲᱟᱹᱜ:Invalid <ref> tag; no text was provided for refs named atmospheric pressure2
↑ Calculation of He, H₂ and CH₄ molar fractions is based on a 2.3% mixing ratio of methane to hydrogen and the 15/85 He/H₂ proportions measured at the tropopause.

ᱛᱩᱢᱟᱹᱞ ᱦᱩᱲᱟᱹᱜ:<ref> tags exist for a group named "lower-alpha", but no corresponding <references group="lower-alpha"/> tag was found

[OED-1] ᱛᱩᱢᱟᱹᱞ ᱦᱩᱲᱟᱹᱜ:Invalid <ref> tag; no text was provided for refs named OED

[BBCOUP-2] ᱛᱩᱢᱟᱹᱞ ᱦᱩᱲᱟᱹᱜ:Invalid <ref> tag; no text was provided for refs named BBCOUP

[3] "Uranian". Oxford English Dictionary (3rd ed.). Oxford University Press. September 2005. (Subscription or UK public library membership required.)

[VSOP87-4] ᱛᱩᱢᱟᱹᱞ ᱦᱩᱲᱟᱹᱜ:Invalid <ref> tag; no text was provided for refs named VSOP87

[nasafact-6] 1 2 3 ᱛᱩᱢᱟᱹᱞ ᱦᱩᱲᱟᱹᱜ:Invalid <ref> tag; no text was provided for refs named nasafact

[CSeligman-7] ᱛᱩᱢᱟᱹᱞ ᱦᱩᱲᱟᱹᱜ:Invalid <ref> tag; no text was provided for refs named CSeligman

[fact-8] 1 2 3 4 5 6 7 8 9 ᱛᱩᱢᱟᱹᱞ ᱦᱩᱲᱟᱹᱜ:Invalid <ref> tag; no text was provided for refs named fact

[meanplane-9] ᱛᱩᱢᱟᱹᱞ ᱦᱩᱲᱟᱹᱜ:Invalid <ref> tag; no text was provided for refs named meanplane

[Seidelmann_Archinal_A'hearn_et_al._2007-10] 1 2 3 4 5 6 7 ᱛᱩᱢᱟᱹᱞ ᱦᱩᱲᱟᱹᱜ:Invalid <ref> tag; no text was provided for refs named Seidelmann Archinal A'hearn et al. 2007

[Jacobson_Campbell_et_al._1992-13] ᱛᱩᱢᱟᱹᱞ ᱦᱩᱲᱟᱹᱜ:Invalid <ref> tag; no text was provided for refs named Jacobson Campbell et al. 1992

[PS15-15] Pater, Imke; Lissauer, Jack J. (2015). Planetary Sciences (2nd updated ed.). New York: Cambridge University Press. p. 250. ISBN 978-0521853712.

[Pearl_et_al_Uranus-16] ᱛᱩᱢᱟᱹᱞ ᱦᱩᱲᱟᱹᱜ:Invalid <ref> tag; no text was provided for refs named Pearl_et_al_Uranus

[Mallama_et_al-17] ᱛᱩᱢᱟᱹᱞ ᱦᱩᱲᱟᱹᱜ:Invalid <ref> tag; no text was provided for refs named Mallama_et_al

[Podolak_Weizman_et_al._1995-18] ᱛᱩᱢᱟᱹᱞ ᱦᱩᱲᱟᱹᱜ:Invalid <ref> tag; no text was provided for refs named Podolak Weizman et al. 1995

[Lunine_1993-19] 1 2 ᱛᱩᱢᱟᱹᱞ ᱦᱩᱲᱟᱹᱜ:Invalid <ref> tag; no text was provided for refs named Lunine 1993

[Mallama_and_Hilton-20] 1 2 ᱛᱩᱢᱟᱹᱞ ᱦᱩᱲᱟᱹᱜ:Invalid <ref> tag; no text was provided for refs named Mallama_and_Hilton

[Lindal_Lyons_et_al._1987-21] ᱛᱩᱢᱟᱹᱞ ᱦᱩᱲᱟᱹᱜ:Invalid <ref> tag; no text was provided for refs named Lindal Lyons et al. 1987

[Conrath_Gautier_et_al._1987-22] ᱛᱩᱢᱟᱹᱞ ᱦᱩᱲᱟᱹᱜ:Invalid <ref> tag; no text was provided for refs named Conrath Gautier et al. 1987

[24] Irwin, Patrick G. J.; et al. (23 April 2018). "Detection of hydrogen sulfide above the clouds in Uranus's atmosphere" (PDF). Nature Astronomy. 2 (5): 420–427. Bibcode:2018NatAs...2..420I. doi:10.1038/s41550-018-0432-1. hdl:2381/42547.

[5] These are the mean elements from VSOP87, together with derived quantities.

[atmospheric_pressure-11] 1 2 3 4 5 6 7 ᱛᱩᱢᱟᱹᱞ ᱦᱩᱲᱟᱹᱜ:Invalid <ref> tag; no text was provided for refs named atmospheric pressure

[12] Calculated using data from Seidelmann, 2007.^[᱙]

[atmospheric_pressure2-14] ᱛᱩᱢᱟᱹᱞ ᱦᱩᱲᱟᱹᱜ:Invalid <ref> tag; no text was provided for refs named atmospheric pressure2

[23] Calculation of He, H₂ and CH₄ molar fractions is based on a 2.3% mixing ratio of methane to hydrogen and the 15/85 He/H₂ proportions measured at the tropopause.

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