Charon

Alternative name: Also known as: S/1978 P1

Moon
Charon Radius

Radius of Charon

The radius of Charon is one of its most fundamental physical characteristics. The Charon radius measures approximately 606 km, making it 10.51× smaller than Earth. This measurement represents the average distance from the center of Charon to its surface, providing crucial information about the celestial body's size and volume.

Understanding the Charon radius is essential for calculating other important properties such as surface area, volume, and gravitational characteristics. The radius directly influences how we perceive and study this fascinating object in our Solar System.

Charon Semi-Major Axis

Orbital Radius of Charon

The Charon semi-major axis is a critical orbital parameter that defines the average distance from the Sun. The Charon semi-major axis measures 0.00 AU (approximately 19,591 km), which represents the average orbital radius of Charon. This measurement is fundamental to understanding Charon's position in the Solar System and its relationship with other celestial bodies.

The orbital radius of Charon determines how much solar radiation the planet receives, which directly influences its temperature, climate, and overall environmental conditions. This distance places Charon in a specific region of the Solar System, each with unique characteristics and scientific significance.

When we examine the Charon semi-major axis 0.00 AU, we gain insights into the planet's orbital mechanics, including its orbital period, velocity, and the gravitational forces at play. This parameter is essential for space mission planning and understanding the dynamics of our Solar System.

Charon Mass

Mass of Charon in kg

The Charon mass is a fundamental property that determines many of the planet's physical characteristics. The mass of Charon in kg is approximately 1.58e+21 kg, which is 3779.75× less than Earth's mass. This substantial mass creates a significant gravitational field that influences everything from atmospheric retention to orbital dynamics.

Understanding the Charon mass allows scientists to calculate other critical properties such as surface gravity, escape velocity, and the planet's ability to retain an atmosphere. The mass also plays a crucial role in determining how Charon interacts with other celestial bodies through gravitational forces.

The precise measurement of the mass of Charon in kg is essential for space exploration missions, as it affects spacecraft trajectories, landing procedures, and the design of scientific instruments. This fundamental property helps us understandCharon's formation history and its place in the evolution of our Solar System.

Charon Orbital Period

How Long is a Year on Charon?

The Charon orbital period defines the length of one complete revolution around the Sun. The Charon orbital period is 0.00 hours, which is 4940997.26× shorter than Earth's year. This orbital period determines the length of Charon's year and directly influences seasonal patterns, climate cycles, and temperature variations.

The Charon orbital period is directly related to its distance from the Sun, following Kepler's laws of planetary motion. Planets farther from the Sun have longer orbital periods, while those closer complete their orbits more quickly. This relationship helps explain why Charon takes the time it does to complete one full orbit.

Understanding the Charon orbital period is crucial for space mission planning, as it affects launch windows, travel times, and the timing of scientific observations. This fundamental orbital parameter also provides insights into the planet's formation history and its current position in the Solar System's dynamic structure.

How Far is Charon from Earth?

Distance Between Charon and Earth

How far is Charon from Earth? This is a question that fascinates both astronomers and space enthusiasts. The distance between Charon and Earth varies throughout their orbital cycles, but on average, Charon is approximately 1.50e+8 km(1.000 AU) away from Earth. This distance changes as both planets orbit the Sun, with the closest approach (opposition) and farthest separation (conjunction) creating significant variations.

The question "How far is Charon from Earth?" has practical implications for space exploration. This distance determines travel time for spacecraft, communication delays for mission control, and the amount of fuel required for interplanetary missions. Understanding this distance is essential for planning future missions to Charon.

The distance between Charon and Earth is not constant due to the elliptical nature of both planets' orbits. When Charon and Earth are on the same side of the Sun (opposition), they are at their closest, making this the optimal time for observations and potential missions. Conversely, when they are on opposite sides of the Sun (conjunction), they are at their farthest separation, which can exceed the average distance significantly.

Physical Properties
Mean Radius
606km
Equatorial Radius
603.6km
Polar Radius
0km
Mass
1.58e+21 kg
Volume
9.32e+8 km³
Density
1.702g/cm³
Gravity
0m/s²
Escape Velocity
0m/s
Flattening
0
Average Temperature
0.0 K (-273.1 °C)
Axial Tilt
0°
Semimajor Axis
19,591km
Perihelion
19,587km
Aphelion
19,595km
Eccentricity
0
Inclination
0.08°
Sidereal Orbit
0.00 hours
Sidereal Rotation
0 seconds
Mean Anomaly
0°
Argument of Periapsis
0°
Longitude of Ascending Node
0°

Overview of Charon

Charon is a fascinating moon in our Solar System that has captured the attention of astronomers and space enthusiasts alike. With a Charon radius of 606 km, making it 10.5× smaller than Earth's size, this celestial body presents unique characteristics that distinguish it from other objects in our cosmic neighborhood. Positioned at an average distance of 19,591 km (0.000 AU) from the Sun, Charon occupies a significant place in the Solar System's architecture. As a moon, Charon demonstrates the incredible diversity of natural satellites that orbit larger celestial bodies throughout our Solar System.

Physical Characteristics

The Charon physical characteristics reveal a world of remarkable dimensions and properties. The Charon radius measures 606 km, making it 10.5× smaller than Earth's size. The Charon mass of 1.58e+21 kg represents 3779.7× smaller than Earth's mass, giving this world substantial gravitational influence. With a volume of 9.32e+8 km³, Charon occupies significant space in the Solar System.

Orbital Properties

The Charon orbit reveals fascinating details about its journey around the Sun and its relationship to other Solar System objects. The Charon orbit has a semimajor axis of 19,591 km (0.000 AU), placing it 7636.1× smaller than Earth's distance from the Sun. At its closest approach (perihelion), Charon comes within 19,587 km of the Sun, while at its farthest point (aphelion), it reaches 19,595 km, creating a 0.0% variation in solar distance. The Charon orbit is nearly circular with an eccentricity of 0 (83.5× smaller than Earth's orbital eccentricity), resulting in relatively stable solar heating throughout its year. The Charon orbit takes 0.00 hours to complete (4940997.3× smaller than Earth's orbital period), defining the length of its year. The orbital inclination of 0.08° indicates how much the Charon orbit is tilted relative to the Solar System's ecliptic plane. This low inclination means Charon follows a path very close to the plane where most planets orbit, suggesting a stable formation history.

Rotation and Tilt

The Charon rotation and axial orientation provide crucial insights into its daily and seasonal cycles, as well as its orbital dynamics. The Charon axial tilt of 0° determines the intensity and nature of seasonal variations. With minimal axial tilt, Charon experiences virtually no seasonal changes, maintaining relatively constant temperatures throughout its year. The orbital orientation parameters reveal additional details about Charon's position in space. The mean anomaly of indicates the planet's current position in its orbit relative to its perihelion. The argument of periapsis of shows how the orbit's orientation changes over time due to gravitational perturbations. The longitude of ascending node of defines the reference point where the orbit crosses the ecliptic plane.

Temperature and Atmosphere

The Charon temperature and atmospheric conditions are fundamental to understanding its habitability and environmental characteristics. The Charon average temperature of 0.0 K (-273.1 °C) (-459.7°F) provides the baseline for understanding its climate. These extremely cold temperatures make Charon inhospitable to life as we know it, with any atmosphere likely frozen solid on the surface. Compared to Earth's average temperature of 15°C (59°F), Charon presents a dramatically different thermal environment. Being closer to the Sun than Earth, Charon receives more intense solar radiation, contributing to its temperature profile.

Escape Velocity & Flattening

The Charon escape velocity and shape characteristics reveal important details about its gravitational field and rotational dynamics. The Charon escape velocity of 0 m/s determines how easily objects can break free from its gravitational pull. This relatively low escape velocity means that gases and light molecules can easily escape into space, making it difficult for Charon to retain a substantial atmosphere. The Charon flattening of 0.0000% indicates how much the planet's rotation affects its shape. This minimal flattening suggests a nearly spherical shape, indicating either slow rotation or a very rigid internal structure.

FAQs About Charon

How big is Charon compared to Earth?

Charon has a radius of 606 km, making it 10.5× smaller than Earth's size. In terms of volume, Charon is 0.0× the size of Earth. This size difference significantly impacts the planet's gravity, atmospheric retention, geological processes, and overall planetary characteristics.

How far is Charon from the Sun?

Charon orbits at an average distance of 19,591 km (0.000 AU) from the Sun, placing it 7636.1× smaller than Earth's distance from the Sun. This distance determines the amount of solar radiation the planet receives and significantly influences its temperature and climate.

How long is a year on Charon?

A year on Charon lasts 0.00 hours (4940997.3× smaller than Earth's orbital period). This orbital period defines the length of the planet's year and affects seasonal patterns, temperature variations, and the overall climate cycle.

What is Charon made of?

Charon has a density of 1.702 g/cm³ (3.2× smaller than Earth's density). This density provides important clues about the planet's internal composition. The low density indicates a composition dominated by lighter elements, characteristic of gas giants or icy bodies.

Does Charon have seasons?

Charon has an axial tilt of . With minimal axial tilt, the planet experiences virtually no seasonal changes, maintaining relatively constant temperatures throughout its year.
Discovery Information
Discovered By
James W. Christy
Discovery Date
22/06/1978
Raw Data