What do the terms perihelion and aphelion mean in terms of comets?
Perihelion and aphelion are the closest and furthest distances from the Sun.
Comets are icy bodies that originate in the outer solar system and have extremely eccentric elliptical orbits.
At aphelion, a comet is a frozen ice ball that is located at the outermost point of the solar system, approximately tens or hundreds of astronomical units (AU) from the Sun. Comets with extended periods of time have aphelia that extend even farther out from the Sun.
A comet's ices melt and its distinctive tail begins to form as it approaches the Sun; at perihelion, the comet is at its closest point to the Sun within the inner solar system, and its tail is at its most pronounced.
A comet's period is typically several decades.
By signing up, you agree to our Terms of Service and Privacy Policy
The closest point of a comet's orbit to the Sun is called perihelion, and the furthest point from the Sun is called aphelion.
By signing up, you agree to our Terms of Service and Privacy Policy
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

- 98% accuracy study help
- Covers math, physics, chemistry, biology, and more
- Step-by-step, in-depth guides
- Readily available 24/7