Template:গ্রহ-ইউরেনাস
উইকিপিডিয়া, মুক্ত বিশ্বকোষ থেকে
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| আবিস্কার | |||||||
| আবিস্কারক | উইলিয়াম হার্শেল | ||||||
| আবিস্কারের সময় | মার্চ ১৩, ১৭৮১ | ||||||
| Orbital characteristics (Epoch J2000) | |||||||
| Semi-major axis | 2,870,972,220 km 19.191 263 93 AU |
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| কক্ষীয় পরিধি | 18.029 Tm 120.515 AU |
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| Eccentricity | 0.047 167 71 | ||||||
| Perihelion | 2,735,555,035 km 18.286 055 96 AU |
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| Aphelion | 3,006,389,405 km 20.096 471 90 AU |
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| Orbital period | 30,707.4896 d (84.07 a) |
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| Synodic period | 369.65 d | ||||||
| Orbital speed | 6.795 km/s | ||||||
| Max. orbital speed | 7.128 km/s | ||||||
| Min. orbital speed | 6.486 km/s | ||||||
| Inclination | 0.769 86° (6.48° to Sun's equator) |
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| Longitude of the ascending node |
74.229 88° | ||||||
| Argument of the perihelion |
96.734 36° | ||||||
| Number of satellites | 27 | ||||||
| Physical characteristics | |||||||
| Equatorial diameter | 51,118 km (4.007 Earths) |
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| Polar diameter | 49,946 km (3.929 Earths) |
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| Oblateness | 0.0229 | ||||||
| Surface area | 8.084×109<noinclude> km2 (15.849 Earths) |
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| Volume | 6.834×1013<noinclude> km3 (63.086 Earths) |
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| Mass | 8.6832×1025<noinclude> kg (14.536 Earths) |
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| Mean density | 1.318 g/cm3 | ||||||
| Equatorial gravity | 8.69 m/s2 (0.886 gee) |
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| Escape velocity | 21.29 km/s | ||||||
| Rotation period | −0.718 33 d (17 h 14 min 24 s by convention) 1 |
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| Rotation velocity | 2.59 km/s = 9320 km/h (at the equator) | ||||||
| Axial tilt | 97.77° | ||||||
| Right ascension of North pole |
77.31° (5 h 9 min 15 s) | ||||||
| Declination | +15.175° | ||||||
| Albedo | 0.51 | ||||||
| Cloudtop avg. temp. | 55 K | ||||||
| Surface temp. |
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| Adjective | Uranian | ||||||
| Atmospheric characteristics | |||||||
| Atmospheric pressure | 120 kPa (at the cloud level) | ||||||
| Hydrogen | 83% | ||||||
| Helium | 15% | ||||||
| Methane | 1.99% | ||||||
| Ammonia | 0.01% | ||||||
| Ethane | 0.00025% | ||||||
| Acetylene | 0.00001% | ||||||
| কার্বন ডাই অক্সাইড হাইড্রোজেন সালফাইড |
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