अरुणग्रह
नेपाली विकिपीडियाबाट
Uranus presented a nearly featureless disk to Voyager 2
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Discovery
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| आविष्कारकर्ता | William Herschel | ||||||||||||||||||
| पत्ता लागेको मिति | March 13, 1781 | ||||||||||||||||||
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Designations
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| Pronunciation | |||||||||||||||||||
| Adjective | Uranian | ||||||||||||||||||
| Epoch J2000 | |||||||||||||||||||
| Aphelion | 3,004,419,704 km 20.083 305 26 AU |
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| Perihelion | 2,748,938,461 km 18.375 518 63 AU |
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| Semi-major axis | 2,876,679,082 km 19.229 411 95 AU |
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| Eccentricity | 0.044 405 586 | ||||||||||||||||||
| परिभ्रमण अवधि | 30,799.095 days 84.323 326 yr 42,718 Uranus solar days[४] |
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| परिभ्रमण अवधि | 369.66 days[५] | ||||||||||||||||||
| परिभ्रमण गति | 6.81 km/s[५] | ||||||||||||||||||
| Mean anomaly | 142.955 717° | ||||||||||||||||||
| Inclination | 0.772 556° to Ecliptic 6.48° to Sun's equator 1.02° to Invariable plane[६] |
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| Longitude of ascending node | 73.989 821° | ||||||||||||||||||
| Argument of perihelion | 96.541 318° | ||||||||||||||||||
| उपग्रह | 27 | ||||||||||||||||||
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Physical characteristics
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| भूमध्यरेखीय अर्धब्यास | 25,559 ± 4 km 4.007 Earths[७][c] |
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| ध्रुवीय अर्धब्यास | 24,973 ± 20 km 3.929 Earths[७][c] |
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| Flattening | 0.022 9 ± 0.000 8[b] | ||||||||||||||||||
| परिमिति | 156,909.98 km[स्रोत नखुलेको] | ||||||||||||||||||
| सतहको क्षेत्रफल | 8.115 6×10९ km2[८][c] 15.91 Earths |
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| आयतन | 6.833×10१३ km3[५][c] 63.086 Earths |
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| पिण्ड | (8.6810 ± 0.0013)×10२५ kg 14.536 Earths[९] GM=5 793 939 ± 13 km3/s2 |
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| औशत घनत्व | 1.27 g/cm3[५][c] | ||||||||||||||||||
| Equatorial surface gravity | 8.69 m/s2[५][c] 0.886 g |
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| Escape velocity | 21.3 km/s[५][c] | ||||||||||||||||||
| परिक्रमण अवधि | –0.718 33 day 17 h 14 min 24 s[७] |
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| Equatorial rotation velocity | 2.59 km/s 9,320 km/h |
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| अक्षको झुकाव | 97.77°[७] | ||||||||||||||||||
| North pole right ascension | 17 h 9 min 15 s 257.311°[७] |
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| North pole declination | –15.175°[७] | ||||||||||||||||||
| Albedo | 0.300 (Bond) 0.51 (geom.)[५] |
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| Surface temp. 1 bar level[११] 0.1 bar (tropopause)[१२] |
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| Apparent magnitude | 5.9[१०] to 5.32[५] | ||||||||||||||||||
| Angular diameter | 3.3"–4.1"[५] | ||||||||||||||||||
| Scale height | 27.7 km[५] | ||||||||||||||||||
| वायुमण्डलीय तत्वहरू | (Below 1.3 bar)
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अरुण सौर्यमण्डलको सूर्यबाट सातौं ग्रह हो। ग्याँस पिण्ड हो। यो सौर्यपरिवारमा तेश्रो ठूलो ग्रह हो। यसको २७वटा उपग्रहहरू छन्। जसमध्ये Miranda, Ariel, Umbriel, Titania र Oberon मुख्य पाँच उपग्रहहरू हुन्। यो ग्रह आफ्नो अक्षमा धेरै ढल्केको हुनाले ध्रुवीय दृष्टीकोणले तेर्सो परेको छ।
See also [सम्पादन गर्ने]
सन्दर्भ [सम्पादन गर्ने]
- ↑ Cite error: Invalid
<ref>tag; no text was provided for refs namedOED - ↑ Cite error: Invalid
<ref>tag; no text was provided for refs namedBBCOUP - ↑ Yeomans, Donald K. (July 13, 2006), "HORIZONS System" — At the site, go to the "web interface" then select "Ephemeris Type: ELEMENTS", "Target Body: Uranus Barycenter" and "Center: Sun".
- ↑ Seligman, Courtney, "Rotation Period and Day Length"
- ↑ ५.० ५.१ ५.२ ५.३ ५.४ ५.५ ५.६ ५.७ ५.८ ५.९ Williams, Dr. David R. (January 31, 2005), "Uranus Fact Sheet"
- ↑ "The MeanPlane (Invariable plane) of the Solar System passing through the barycenter", 2009-04-03 (produced with Solex 10 written by Aldo Vitagliano; see also Invariable plane)
- ↑ Cite error: Invalid
<ref>tag; no text was provided for refs namedSeidelmann2007 - ↑ Munsell, Kirk (May 14, 2007), "NASA: Solar System Exploration: Planets: Uranus: Facts & Figures"
- ↑ Cite error: Invalid
<ref>tag; no text was provided for refs namedJacobson1992 - ↑ Cite error: Invalid
<ref>tag; no text was provided for refs namedephemeris - ↑ Cite error: Invalid
<ref>tag; no text was provided for refs namedPodolak1995 - ↑ Cite error: Invalid
<ref>tag; no text was provided for refs namedLunine1993 - ↑ Cite error: Invalid
<ref>tag; no text was provided for refs namedLindal1987 - ↑ Cite error: Invalid
<ref>tag; no text was provided for refs namedConrath1987 - ↑ Feuchtgruber, H. (1999), "Detection of HD in the atmospheres of Uranus and Neptune: a new determination of the D/H ratio", Astronomy and Astrophysics 341: L17–L21, Bibcode: 1999A&A...341L..17F
| सौर्य परिवार | |||||||
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| सूर्य • Heliosphere |
ग्रहहरु ☾ = उपग्रह(s) ∅ = rings |
बुधग्रह | शुक्रग्रह | पृथ्वी ☾ | मंगलग्रह ☾ | ||
| बृहस्पतिग्रह ☾ ∅ | शनिग्रह ☾ ∅ | अरुणग्रह ☾ ∅ | वरुणग्रह ☾ ∅ | ||||
| क्षुद्रग्रहहरु | सेरेस | यम ☾ | हुमेआ ☾ | मेकमेक | |||
| Eris ☾ | |||||||
| Small Solar System bodies |
शिशुग्रहहरु (साना ग्रहहरु) |
Groups and families: Vulcanoids · Near-Earth asteroids · Asteroid belt Jupiter Trojans · Centaurs · Neptune Trojans · Asteroid moons · Meteoroids · Pallas · Juno · Vesta · Hygiea · |
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| See also the list of asteroids, and the meaning and pronunciation of asteroid names. | |||||||
| Trans- Neptunians |
Kuiper belt – Plutinos: Orcus · Ixion – Cubewanos: 2002 UX25 · Varuna · 1992 QB1 · 2002 TX300 · Quaoar · Huya · 2002 AW197 |
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| Scattered disc: 2002 TC302 · 2004 XR190 · Sedna | |||||||
| पुच्छ्रेताराहरु | Lists of periodic and non-periodic comets · Damocloids · Hills cloud · Oort cloud | ||||||
| See also Geology of solar terrestrial planets, astronomical objects, the solar system's list of objects, sorted by radius or mass, and the Solar System Portal | |||||||