Hydra

Alternative name: Also known as: S/2005 P1

Moon
Dimensions:50.9 x 36.1 x 30.9
Hydra Radius

Radius of Hydra

The radius of Hydra is one of its most fundamental physical characteristics. The Hydra radius measures approximately 36 km, making it 176.97× smaller than Earth. This measurement represents the average distance from the center of Hydra to its surface, providing crucial information about the celestial body's size and volume.

Understanding the Hydra 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.

Hydra Semi-Major Axis

Orbital Radius of Hydra

The Hydra semi-major axis is a critical orbital parameter that defines the average distance from the Sun. The Hydra semi-major axis measures 0.00 AU (approximately 64,738 km), which represents the average orbital radius of Hydra. This measurement is fundamental to understanding Hydra's position in the Solar System and its relationship with other celestial bodies.

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

When we examine the Hydra 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.

Hydra Mass

Mass of Hydra in kg

The Hydra mass is a fundamental property that determines many of the planet's physical characteristics. The mass of Hydra in kg is approximately 4.80e+16 kg, which is 124416666.67× less than Earth's mass. This substantial mass creates a significant gravitational field that influences everything from atmospheric retention to orbital dynamics.

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

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

Hydra Orbital Period

How Long is a Year on Hydra?

The Hydra orbital period defines the length of one complete revolution around the Sun. The Hydra orbital period is 0.01 hours, which is 826129.57× shorter than Earth's year. This orbital period determines the length of Hydra's year and directly influences seasonal patterns, climate cycles, and temperature variations.

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

Understanding the Hydra 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 Hydra from Earth?

Distance Between Hydra and Earth

How far is Hydra from Earth? This is a question that fascinates both astronomers and space enthusiasts. The distance between Hydra and Earth varies throughout their orbital cycles, but on average, Hydra 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 Hydra 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 Hydra.

The distance between Hydra and Earth is not constant due to the elliptical nature of both planets' orbits. When Hydra 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
36km
Equatorial Radius
36km
Polar Radius
0km
Mass
4.80e+16 kg
Volume
0.00e+0 km³
Density
1.9g/cm³
Gravity
0m/s²
Escape Velocity
0m/s
Flattening
0
Average Temperature
0.0 K (-273.1 °C)
Axial Tilt
0°
Semimajor Axis
64,738km
Perihelion
0km
Aphelion
0km
Eccentricity
0.005
Inclination
0.242°
Sidereal Orbit
0.01 hours
Sidereal Rotation
0 seconds
Mean Anomaly
0°
Argument of Periapsis
0°
Longitude of Ascending Node
0°

Overview of Hydra

Hydra is a fascinating moon in our Solar System that has captured the attention of astronomers and space enthusiasts alike. With a Hydra radius of 36 km, making it 177.0× 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 64,738 km (0.000 AU) from the Sun, Hydra occupies a significant place in the Solar System's architecture. As a moon, Hydra demonstrates the incredible diversity of natural satellites that orbit larger celestial bodies throughout our Solar System.

Physical Characteristics

The Hydra physical characteristics reveal a world of remarkable dimensions and properties. The Hydra radius measures 36 km, making it 177.0× smaller than Earth's size. The Hydra mass of 4.80e+16 kg represents 124416666.7× smaller than Earth's mass, giving this world substantial gravitational influence.

Orbital Properties

The Hydra orbit reveals fascinating details about its journey around the Sun and its relationship to other Solar System objects. The Hydra orbit has a semimajor axis of 64,738 km (0.000 AU), placing it 2310.8× smaller than Earth's distance from the Sun. The Hydra orbit is nearly circular with an eccentricity of 0.005 (3.3× smaller than Earth's orbital eccentricity), resulting in relatively stable solar heating throughout its year. The Hydra orbit takes 0.01 hours to complete (826129.6× smaller than Earth's orbital period), defining the length of its year. The orbital inclination of 0.242° indicates how much the Hydra orbit is tilted relative to the Solar System's ecliptic plane. This low inclination means Hydra follows a path very close to the plane where most planets orbit, suggesting a stable formation history.

Rotation and Tilt

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

Escape Velocity & Flattening

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

How big is Hydra compared to Earth?

Hydra has a radius of 36 km, making it 177.0× smaller than Earth's size. In terms of volume, Hydra 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 Hydra from the Sun?

Hydra orbits at an average distance of 64,738 km (0.000 AU) from the Sun, placing it 2310.8× 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 Hydra?

A year on Hydra lasts 0.01 hours (826129.6× 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 Hydra made of?

Hydra has a density of 1.9 g/cm³ (2.9× 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 Hydra have seasons?

Hydra 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
Hubble Space Telescope Pluto Companion Search Team
Discovery Date
15/05/2005
Raw Data