Enceladus

Moon
Enceladus Radius

Radius of Enceladus

The radius of Enceladus is one of its most fundamental physical characteristics. The Enceladus radius measures approximately 504.2 km, making it 12.64× smaller than Earth. This measurement represents the average distance from the center of Enceladus to its surface, providing crucial information about the celestial body's size and volume.

Understanding the Enceladus 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.

Enceladus Semi-Major Axis

Orbital Radius of Enceladus

The Enceladus semi-major axis is a critical orbital parameter that defines the average distance from the Sun. The Enceladus semi-major axis measures 0.00 AU (approximately 238,042 km), which represents the average orbital radius of Enceladus. This measurement is fundamental to understanding Enceladus's position in the Solar System and its relationship with other celestial bodies.

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

When we examine the Enceladus 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.

Enceladus Mass

Mass of Enceladus in kg

The Enceladus mass is a fundamental property that determines many of the planet's physical characteristics. The mass of Enceladus in kg is approximately 1.08e+20 kg, which is 55296.30× less than Earth's mass. This substantial mass creates a significant gravitational field that influences everything from atmospheric retention to orbital dynamics.

Understanding the Enceladus 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 Enceladus interacts with other celestial bodies through gravitational forces.

The precise measurement of the mass of Enceladus 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 understandEnceladus's formation history and its place in the evolution of our Solar System.

Enceladus Orbital Period

How Long is a Year on Enceladus?

The Enceladus orbital period defines the length of one complete revolution around the Sun. The Enceladus orbital period is 0.00 hours, which is 23035145.62× shorter than Earth's year. This orbital period determines the length of Enceladus's year and directly influences seasonal patterns, climate cycles, and temperature variations.

The Enceladus 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 Enceladus takes the time it does to complete one full orbit.

Understanding the Enceladus 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 Enceladus from Earth?

Distance Between Enceladus and Earth

How far is Enceladus from Earth? This is a question that fascinates both astronomers and space enthusiasts. The distance between Enceladus and Earth varies throughout their orbital cycles, but on average, Enceladus is approximately 1.49e+8 km(0.998 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 Enceladus 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 Enceladus.

The distance between Enceladus and Earth is not constant due to the elliptical nature of both planets' orbits. When Enceladus 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
504.2km
Equatorial Radius
252.1km
Polar Radius
0km
Mass
1.08e+20 kg
Volume
6.71e+7 km³
Density
1.61g/cm³
Gravity
0m/s²
Escape Velocity
0m/s
Flattening
0
Average Temperature
0.0 K (-273.1 °C)
Axial Tilt
0°
Semimajor Axis
238,042km
Perihelion
236,830km
Aphelion
239,066km
Eccentricity
0.005
Inclination
0.019°
Sidereal Orbit
0.00 hours
Sidereal Rotation
0.01 hours
Mean Anomaly
0°
Argument of Periapsis
0°
Longitude of Ascending Node
0°

Overview of Enceladus

Enceladus is a fascinating moon in our Solar System that has captured the attention of astronomers and space enthusiasts alike. With a Enceladus radius of 504.2 km, making it 12.6× 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 238,042 km (0.002 AU) from the Sun, Enceladus occupies a significant place in the Solar System's architecture. As a moon, Enceladus demonstrates the incredible diversity of natural satellites that orbit larger celestial bodies throughout our Solar System.

Physical Characteristics

The Enceladus physical characteristics reveal a world of remarkable dimensions and properties. The Enceladus radius measures 504.2 km, making it 12.6× smaller than Earth's size. The Enceladus mass of 1.08e+20 kg represents 55296.3× smaller than Earth's mass, giving this world substantial gravitational influence. With a volume of 6.71e+7 km³, Enceladus occupies significant space in the Solar System.

Orbital Properties

The Enceladus orbit reveals fascinating details about its journey around the Sun and its relationship to other Solar System objects. The Enceladus orbit has a semimajor axis of 238,042 km (0.002 AU), placing it 628.5× smaller than Earth's distance from the Sun. At its closest approach (perihelion), Enceladus comes within 236,830 km of the Sun, while at its farthest point (aphelion), it reaches 239,066 km, creating a 0.9% variation in solar distance. The Enceladus orbit is nearly circular with an eccentricity of 0.005 (3.7× smaller than Earth's orbital eccentricity), resulting in relatively stable solar heating throughout its year. The Enceladus orbit takes 0.00 hours to complete (23035145.6× smaller than Earth's orbital period), defining the length of its year. The orbital inclination of 0.019° indicates how much the Enceladus orbit is tilted relative to the Solar System's ecliptic plane. This low inclination means Enceladus follows a path very close to the plane where most planets orbit, suggesting a stable formation history.

Rotation and Tilt

The Enceladus rotation and axial orientation provide crucial insights into its daily and seasonal cycles, as well as its orbital dynamics. The Enceladus rotation period of 0.01 hours (2620.6× smaller than Earth's rotation period) determines the length of its day. This extremely fast rotation creates intense centrifugal forces and may contribute to the planet's flattened shape. The Enceladus axial tilt of 0° determines the intensity and nature of seasonal variations. With minimal axial tilt, Enceladus experiences virtually no seasonal changes, maintaining relatively constant temperatures throughout its year. The orbital orientation parameters reveal additional details about Enceladus'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 Enceladus temperature and atmospheric conditions are fundamental to understanding its habitability and environmental characteristics. The Enceladus average temperature of 0.0 K (-273.1 °C) (-459.7°F) provides the baseline for understanding its climate. These extremely cold temperatures make Enceladus 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), Enceladus presents a dramatically different thermal environment. Being closer to the Sun than Earth, Enceladus receives more intense solar radiation, contributing to its temperature profile.

Escape Velocity & Flattening

The Enceladus escape velocity and shape characteristics reveal important details about its gravitational field and rotational dynamics. The Enceladus 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 Enceladus to retain a substantial atmosphere. The Enceladus 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 Enceladus

How big is Enceladus compared to Earth?

Enceladus has a radius of 504.2 km, making it 12.6× smaller than Earth's size. In terms of volume, Enceladus 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 Enceladus from the Sun?

Enceladus orbits at an average distance of 238,042 km (0.002 AU) from the Sun, placing it 628.5× 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 Enceladus?

A year on Enceladus lasts 0.00 hours (23035145.6× 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 Enceladus made of?

Enceladus has a density of 1.61 g/cm³ (3.4× 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 Enceladus have seasons?

Enceladus 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
William Herschel
Discovery Date
28/08/1789
Raw Data