What does arcsecond mean?
Definitions for arcsecond
arc·sec·ond
This dictionary definitions page includes all the possible meanings, example usage and translations of the word arcsecond.
Princeton's WordNet
second, arcsecondnoun
a 60th part of a minute of arc
"the treasure is 2 minutes and 45 seconds south of here"
Wiktionary
arcsecondnoun
A unit of angle; 1/60th of an arcminute, or 1/3600th of a degree.
Wikipedia
arcsecond
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. Since one degree is 1/360 of a turn (or complete rotation), one arcminute is 1/21600 of a turn. The nautical mile (nmi) was originally defined as the arc length of a minute of latitude on a spherical Earth, so the actual Earth circumference is very near 21600 nmi. A minute of arc is π/10800 of a radian. A second of arc, arcsecond (arcsec), or arc second, denoted by the symbol ″, is 1/60 of an arcminute, 1/3600 of a degree, 1/1296000 of a turn, and π/648000 (about 1/206264.8) of a radian. These units originated in Babylonian astronomy as sexagesimal subdivisions of the degree; they are used in fields that involve very small angles, such as astronomy, optometry, ophthalmology, optics, navigation, land surveying, and marksmanship. To express even smaller angles, standard SI prefixes can be employed; the milliarcsecond (mas) and microarcsecond (μas), for instance, are commonly used in astronomy. For a three-dimensional area such as on a sphere, square arcminutes or seconds may be used.
ChatGPT
arcsecond
An arcsecond is a unit of angular measurement, often used in astronomy, equal to 1/60th of an arcminute or 1/3600th of a degree. It is often used to measure small angles and distances, such as the diameter of a star, the distance between stars, or the shifts in a celestial object's apparent position due to Earth's movement in space. Its symbol is " ″ " (double prime).
Matched Categories
Numerology
Chaldean Numerology
The numerical value of arcsecond in Chaldean Numerology is: 6
Pythagorean Numerology
The numerical value of arcsecond in Pythagorean Numerology is: 1
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"arcsecond." Definitions.net. STANDS4 LLC, 2024. Web. 25 Apr. 2024. <https://www.definitions.net/definition/arcsecond>.
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