## How do you calculate periapsis speed?

The velocity at periapsis of the capture orbit is found by setting h = rpvp in Equation 2.50 and solving for νp.

## What is periapsis altitude?

This is called the periapsis of the orbit. The mountain represents the highest point in the orbit. That’s called the apoapsis. The altitude affects the time an orbit takes, called the orbit period. The period of the space shuttle’s orbit, at say 200 kilometers, used to be about 90 minutes.

**What is Earth argument of periapsis?**

In astronomy, the argument of periapsis (ω) is a way of talking about the orbit of a planet, asteroid or comet. It is also known as the argument of perihelion or the argument of perifocus. It is the angle (starting from the center of the orbit) between an orbiting body’s periapsis and its ascending node.

**What is Earth’s farthest point from the Sun?**

Aphelion

Aphelion is the point of the Earth’s orbit that is farthest away from the Sun. Perihelion is the point of the Earth’s orbit that is nearest to the Sun.

### What is Earth’s aphelion distance?

Aphelion Day

Planet | Eccentricity | Aphelion Distance farthest point from the Sun (AU) |
---|---|---|

Earth | 0.017 | 1.02 |

Mars | 0.093 | 1.67 |

Jupiter | 0.048 | 5.45 |

Saturn | 0.056 | 10.0 |

### When Earth is farthest from the sun?

July 5

So, it may surprise you to find out that despite those triple-digit temperatures, our planet will reach aphelion, the point in its orbit when Earth is farthest from the sun, at 6:27 p.m. EDT (3:27 p.m. PDT/22:27 UTC) on Monday, July 5.

**Where is Earth currently in orbit?**

Third Rock. Earth orbits our Sun, a star. Earth is the third planet from the Sun at a distance of about 93 million miles (150 million km).

**What is the angle of periapsis?**

#### Where is the hottest sun?

Core

Core. The hottest part of the Sun is the core, at 28,080,000°F, on average.