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Planet by a long way.

They vary but in our solar system the largest is Jupiter and it's 66,854km across the middle.

A light second is the distance travelled by light in a second = 299,792.5km

A star can be lots of different sizes - our Sun is = 1,391,980km

An AU is the distance from the Earth to the Sun = 149,598,000 km

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Q: Which is smallest 1AU 1 light-second a star or a planet?
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Related questions

If a planet with twice the mass of earth orbiting a star with the same mass as the sun and an orbital distance of 1AU what is the orbital period?

Since all other things are equal, it will take a year to go around the star. The mass of the planet hardly has any effect on its orbit - unless this mass is significant, compared to the star.


Which planet is about 10 times further from the sun than Earth is?

Saturn is 9.54 A.U from the sun (1AU= Earth's distance from the sun)


How do you convert km into AU's?

Divide kilometers by 149,597,871. (1AU = 149,597,871km)


How much is 52 in aus to km?

52 Astronomical Units is 7,779,089,292 kilometers. (1AU = 149,597,871km)


How much is 500 cinq cents francs in Australian dollars?

$1AU = approx 4 francs


What is the mass location and charge of atomic subparticles?

Well, the proton is positive and weighs 1AU and the Neutron has a neutral charge and also weighs 1AU while the Electrons weigh less than an AU and are negative. The proton and neutron are in the nucleus and the leectrons hover around the nucleus in eliptical patterns.


What is the most useful unit foe measuring distances within the solar system?

Probably AUs or Astronomical Units. 1AU= 93 million miles or about 150 million km. 1AU is the distance from the Earth to the Sun.


What planet is 1AU from th sun?

By definition, the planet Earths average distance is 1 AU (astronomical Unit) from the sun. This is about 93 million miles or 150 million km.


How do you change astromical units to kilometers?

There is no need to change astronomical unit into Kilometres cause 1AU = 1.495978707 x 108 kilometres


Is 1AU equal to 93000000mi?

1 Astronomical unit is the mean distance from Earth to Sun and is exactly 149,597,870,700 metres or 92,955,807.273 miles.


How many kilometres make up 1AU?

An astronomical unit (AU) is the average distance between Sun and Earth. This is approximately 150 million kilometers.


What is the mesurmant equal to the disance between the eath and the sun?

1 Astronomical Unit or 1AU is the average distance between the Sun and the Earth. It is approximately 149,598,000 km.