# How much is 1 km in astronomical units?

## How much is 1 km in astronomical units?

Kilometer to Astronomical Unit Conversion Table

Kilometer [km] | Astronomical Unit [AU, UA] |
---|---|

0.1 km | 6.6845871226706E-10 AU, UA |

1 km | 6.6845871226706E-9 AU, UA |

2 km | 1.3369174245341E-8 AU, UA |

3 km | 2.0053761368012E-8 AU, UA |

### How many AU are in KM?

870.700 kilometres

Development of unit definition

1 astronomical unit | = 149597870700 metres (by definition) |
---|---|

= 149597870.700 kilometres (exactly) | |

≈ 92955807.273 miles | |

≈ 499.00478384 light-seconds | |

≈ 8.3167463973 light-minutes |

**How do you convert UA to KM?**

Please provide values below to convert astronomical unit [AU, UA] to kilometer [km], or vice versa….Astronomical Unit to Kilometer Conversion Table.

Astronomical Unit [AU, UA] | Kilometer [km] |
---|---|

0.1 AU, UA | 14959787.0691 km |

1 AU, UA | 149597870.691 km |

2 AU, UA | 299195741.382 km |

3 AU, UA | 448793612.073 km |

**How long is the astronomical unit?**

about 93 million miles

An Astronomical Unit (AU) is the average distance between Earth and the Sun, which is about 93 million miles or 150 million kilometers.

## What is the value of 1 AU?

For general reference, we can say that one astronomical unit (AU) represents the mean distance between the Earth and our sun. An AU is approximately 93 million miles (150 million km). It’s approximately 8 light-minutes. More exactly, one astronomical unit (AU) = 92,955,807 miles (149,597,871 km).

### How many AU is the universe?

1.74 million billion AU

27.6 X 62900 billion AU = 1.74 million billion AU.

**Is AU A light-year?**

The light-year, alternatively spelled lightyear, is a unit of length used to express astronomical distances and is equivalent to about 9.46 trillion kilometers (9.46×1012 km) or 5.88 trillion miles (5.88×1012 mi)….

Light-year | |
---|---|

astronomical units | 63241 au 0.3066 pc |

**How do you convert scientific notation to AU?**

One astronomical unit (AU) is 150 million km = 1.5 × 108 km. Dividing the first number by the second, we get 3.27 × 10(9 – 8) = 3.27 × 101 AU.

## What is a light year vs astronomical unit?

One light year is almost six trillion miles. And an astronomical unit is the average distance between the earth and the sun. So the distance to the sun is by definition one AU. A parsec is the distance at which one astronomical unit subtends an angle of one second of arc.

### How long does it take to travel 1 AU?

499.0 seconds

Light travels at a speed of 299,792 kilometers per second; 186,287 miles per second. It takes 499.0 seconds for light to travel from the Sun to the Earth, a distance called 1 Astronomical Unit.

**How do you convert to solar luminosity?**

1 Solar Luminosity = 3.826×1033 ergs/s = 3.826×26 Joules/s = 3.826×26 Watts.