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An astronomical second is a unit of time defined based on the Earth's rotation. It is equal to 1/86,400 of a mean solar day, or about 0.9973 seconds. It is used in astronomy and celestial navigation for precise time measurements.

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1y ago

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What is the definition of the word astronomical?

Astronomical is an adjective that has a couple meanings. The first meaning of astronomical is relating to astronomy, and the second meaning of astronomical is extremely large.


How do you convert astronomical units to meters per second?

To convert astronomical units (AU) to meters per second, you can use the conversion factor: 1 AU = 149,597,870,700 meters. If you need to convert a velocity in AU per year to meters per second, you would need to divide the AU per year value by the number of seconds in a year (31,556,952 seconds).


Units of time that are not based upon astronomical movements?

Units of time that are not based on astronomical movements include the second, minute, hour, and day. These units are widely used for measuring time intervals and have been standardized for practical purposes.


Is astronomical an adjective or an adverb?

Astronomical is an adjective.


What is a good sentence with the word astronomical unit?

Astronomical: He wants to be an astronomical astronaut when he grows up.


What is 1 AU equal to in miles and kilometers?

One (AU) Astronomical Unit is 92,955,887.6 miles OR149,598,000 kilometers.


Which planet is 0.72 astronimical units from the sun?

Venus, the second closest planet to the sun.


How far from the sun is all the plants?

Mercury--0.387 astronomical units Venus--0.723 astronomical units Earth--1.0 astronomical units Mars--1.524 astronomical units Jupiter--5.203 astronomical units Saturn--9.529 astronomical units Uranus--19.19 astronomical units Neptune--30.06 astronomical units Pluto--39.53 astronomical units Please note that these are all mean distances, and the actual distance will vary as to the location of the specific planet in its specific orbit.


How would you use astronomical in a sentence?

The cost of space travel is still astronomical. A telescope is used for astronomical sightings.


What is the distance between earth and the sun abbreviated?

That's called astronomical unit, or AU.That's called astronomical unit, or AU.That's called astronomical unit, or AU.That's called astronomical unit, or AU.


When was the astronomical clock built?

The astronomical clock was first installed in 1410.


What was the astronomical canon about?

The astronomical canon was a compilation of mathematical tables and astronomical data used for making astronomical calculations and observations. It helped astronomers accurately predict the positions of celestial bodies in the sky.