চাঁদ
উইকিপিডিয়া, মুক্ত বিশ্বকোষ থেকে
The Moon as seen from Earth |
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Orbital characteristics | |||||||
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Orbital circumference | 2,413,402 km (0.016 AU) |
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Eccentricity | 0.0554 | ||||||
Perigee | 363,104 km (0.0024 AU) |
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Apogee | 405,696 km (0.0027 AU) |
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Revolution period
(Sidereal period) |
27.321 66155 d (27 d 7 h 43.2 min) |
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Synodic period | 29.530 588 d (29 d 12 h 44.0 min) |
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Avg. Orbital Speed | 1.022 km/s | ||||||
Max. Orbital Speed | 1.082 km/s | ||||||
Min. Orbital Speed | 0.968 km/s | ||||||
Inclination | varies between 28.60° and 18.30° (5.145 396° to ecliptic) see below |
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Longitude of the ascending node |
regressing, 1 revolution in 18.6 years |
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Argument of perigee | progressing, 1 revolution in 8.85 years |
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Is a satellite of | Earth | ||||||
Physical characteristics | |||||||
Equatorial diameter | 3,476.2 km[১] (0.273 Earths) |
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Polar diameter | 3,472.0 km (0.273 Earths) |
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Oblateness | 0.0012[২] | ||||||
Surface area | 3.793×107<noinclude> km2 (0.074 Earths) |
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Volume | 2.1958×1010<noinclude> km3 (0.020 Earths) |
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Mass | 7.347 673×1022<noinclude> kg (0.0123 Earths) |
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Mean density | 3,346.2 kg·m−3 | ||||||
Equatorial gravity | 1.622 m·s−2, (0.1654 gee) |
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Escape velocity | 2.38 km·s−1 | ||||||
Rotation period | 27.321 661 d (synchronous) |
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Rotation velocity | 16.655 km·h−1 (at the equator) |
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Axial tilt | 1.5424° to ecliptic see Orbit |
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Albedo | 0.12 | ||||||
Magnitude | -12.74 | ||||||
Surface temp. |
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Bulk composition of the moon's
mantle and crust |
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estimated, weight percent | |||||||
Oxygen | 42.6 % | ||||||
Magnesium | 20.8 % | ||||||
Silicon | 20.5 % | ||||||
Iron | 9.9 % | ||||||
Calcium | 2.31 % | ||||||
Aluminium | 2.04 % | ||||||
Nickel | 0.472 % | ||||||
Chromium | 0.314 % | ||||||
Manganese | 0.131 % | ||||||
Titanium | 0.122 % | ||||||
Atmospheric characteristics | |||||||
Atmospheric pressure | 3 × 10-13kPa | ||||||
Helium | 25 % | ||||||
Neon | 25 % | ||||||
Hydrogen | 23 % | ||||||
Argon | 20 % | ||||||
Methane Ammonia |
trace |
চাঁদ পৃথিবীর একমাত্র প্রাকৃতিক উপগ্রহ|
সম্পাদনা সৌর জগৎ |
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গ্রহসমূহ: বুধ - শুক্র - পৃথিবী - মঙ্গল - বৃহস্পতি - শনি - ইউরেনাস - নেপচুন |
অন্যান্য: সূর্য - চাঁদ - Asteroid belt - ধূমকেতু - কয়পার বেল্ট - Scattered disc - উওর্ট মেঘ |
আরও দেখুন জ্যোতিষ্ক এবং সৌর জগতের list of objects, sorted by radius or mass. |