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"ଜହ୍ନ" ପୃଷ୍ଠାର ସଂସ୍କରଣ‌ଗୁଡ଼ିକ ମଧ୍ୟରେ ତଫାତ

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ଭିଜୁଆଲWikitext
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{{efn |name = angular size
| The range of angular size values given are based on simple scaling of the following values given in the fact sheet reference: at an Earth-equator to Moon-centre distance of 378 000 km, the [[Angular diameter|angular size]] is 1896 [[arcsecond]]s. The same fact sheet gives extreme Earth–Moon distances of 407 000 km and 357 000 km. For the maximum angular size, the minimum distance has to be corrected for Earth's equatorial radius of 6 378 km, giving 350 600 km.
}}
{{efn |name = pressure explanation
| Lucey et al. (2006) give {{nowrap|10<sup>7</sup> particles cm<sup>−3</sup>}} by day and {{nowrap|10<sup>5</sup> particles cm<sup>−3</sup>}} by night. Along with equatorial surface temperatures of 390&nbsp;[[Kelvin|K]] by day and 100&nbsp;K by night, the [[ideal gas law]] yields the pressures given in the infobox (rounded to the nearest [[order of magnitude]]): 10<sup>−7</sup>&nbsp;[[Pascal (unit)|Pa]] by day and 10<sup>−10</sup>&nbsp;Pa by night.
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{{efn |name = near-Earth asteroids
| There are a number of [[near-Earth asteroid]]s, including [[3753 Cruithne]], that are [[co-orbital]] with Earth: their orbits bring them close to Earth for periods of time but then alter in the long term (Morais et al, 2002). These are [[quasi-satellite]]s&nbsp;– they are not moons as they do not orbit Earth. For more information, see [[Other moons of Earth]].
}}
{{efn |name = Moon vs. Charon
| With 27% the diameter and 60% the density of Earth, the Moon has 1.23% of the mass of Earth. The moon [[Charon (moon)|Charon]] is larger relative to its primary [[Pluto]], but Pluto is now considered to be a [[dwarf planet]].
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{{efn |name = age
| This age is calculated from isotope dating of lunar rocks.
}}
{{efn |name = orbpd
| More accurately, the Moon's mean sidereal period (fixed star to fixed star) is 27.321661&nbsp;days {{nowrap|(27 d 07 h 43 min 11.5 s)}}, and its mean tropical orbital period (from equinox to equinox) is 27.321582&nbsp;days {{nowrap|(27 d 07 h 43 min 04.7 s)}} (''Explanatory Supplement to the Astronomical Ephemeris'', 1961, at p.107).
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{{efn |name = synpd
| More accurately, the Moon's mean synodic period (between mean solar conjunctions) is 29.530589&nbsp;days {{nowrap|(29 d 12 h 44 min 02.9 s)}} (''Explanatory Supplement to the Astronomical Ephemeris'', 1961, at p.107).
}}
{{efn |name = brightness
| The Sun's [[apparent magnitude]] is −26.7, while the full moon's apparent magnitude is −12.7.
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{{efn |name = area
| On average, the Moon covers an area of {{nowrap|0.21078 square degrees}} on the night sky.
}}
{{efn |name = size changes
| See graph in [[Sun#Life phases]]. At present, the diameter of the Sun is increasing at a rate of about five percent per billion years. This is very similar to the rate at which the apparent angular diameter of the Moon is decreasing as it recedes from Earth.
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