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A minute of arc, arcminute (arcmin), arc minute, or minute arc, denoted by the symbol ′, is a unit of angular measurement equal to 1 / 60 of one degree. [1] Since one degree is 1 / 360 of a turn, or complete rotation, one arcminute is 1 / 21 600 of a turn.
The nominal sizes given above reflect the fact that at the equator, 1 degree of both latitude and longitude correspond to around 110 km, with the actual value for longitude declining between there and the poles, where it becomes zero (latitude actual: 110.567 km at the equator, 111.699 km at the poles; longitude actual: 111.320 km at the ...
Dimensionless with an arc length one thousandth of the radius, i.e. 1 mm / m or 1 m / km Conversions 1 mrad in ..... is equal to ... radians 1 / 1000 rad turns 1 / 2000 π turn gradians 1 / 5 π ≈ 0.063662 g degrees 9 / 50 π ≈ 0.057296° arcminutes
These figures should be compared with the temperature and density of Earth's atmosphere plotted at NRLMSISE-00, which shows the air density dropping from 1200 g/m 3 at sea level to 0.125 g/m 3 at 70 km, a factor of 9600, indicating an average scale height of 70 / ln(9600) = 7.64 km, consistent with the indicated average air temperature over ...
You can also calculate the kilometers per degree of longitude, k, using one of the following formulas (θ is the latitude, 6378.14 km is the equatorial radius, and 6356.8 km is the polar radius): Accurate, assuming a spheroid :
Earth cutaway from core to exosphere Geothermal drill machine in Wisconsin, USA. Temperature within Earth increases with depth. Highly viscous or partially molten rock at temperatures between 650 and 1,200 °C (1,200 and 2,200 °F) are found at the margins of tectonic plates, increasing the geothermal gradient in the vicinity, but only the outer core is postulated to exist in a molten or fluid ...
HD 1606 is a single [12] star in the northern constellation of Andromeda, positioned a few degrees to the northeast of the bright star Alpheratz. It has a blue-white hue and is dimly visible to the naked eye with an apparent visual magnitude of 5.87. [2] Although it is suspected of variability, none has been conclusively found. [13]
HD 37124 is a star in the equatorial constellation of Taurus (the Bull), positioned about a half degree to the SSW of the bright star Zeta Tauri. [7] The apparent visual magnitude of this star is 7.68, [2] which is too dim to be visible to the naked eye.