1 Ceres

Alternative name: Also known as: A899 OF - 1943 XB

Asteroid
Physical Properties
Mean Radius
476.2km
Equatorial Radius
487km
Polar Radius
455km
Mass
9.39e+20 kg
Volume
4.21e+9 km³
Density
2.161g/cm³
Gravity
0.28m/s²
Escape Velocity
510m/s
Flattening
0.962
Average Temperature
168.0 K (-105.1 °C)
Axial Tilt
3°
Semimajor Axis
4.14e+8km
Perihelion
3.83e+8km
Aphelion
4.45e+8km
Eccentricity
0.076
Inclination
10.593°
Sidereal Orbit
0.47 hours
Sidereal Rotation
0.00 hours
Mean Anomaly
77.372°
Argument of Periapsis
73.598°
Longitude of Ascending Node
80.306°

Overview of 1 Ceres

1 Ceres is a fascinating asteroid in our Solar System that has captured the attention of astronomers and space enthusiasts alike. With a 1 Ceres radius of 476.2 km, making it 13.4× 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 4.14e+8 km (2.767 AU) from the Sun, 1 Ceres occupies a significant place in the Solar System's architecture. As an asteroid, 1 Ceres represents the remnants of the early Solar System, providing valuable insights into the formation and evolution of our cosmic neighborhood.

Physical Characteristics

The 1 Ceres physical characteristics reveal a world of remarkable dimensions and properties. The 1 Ceres radius measures 476.2 km, making it 13.4× smaller than Earth's size. The equatorial radius of 487 km and polar radius of 455 km create a slight flattening of 6.57%, indicating the planet's rotation affects its shape. The 1 Ceres mass of 9.39e+20 kg represents 6357.9× smaller than Earth's mass, giving this world substantial gravitational influence. With a volume of 4.21e+9 km³, 1 Ceres occupies significant space in the Solar System. The 1 Ceres density of 2.161 g/cm³ (2.5× smaller than Earth's density) provides clues about its internal composition, while the surface gravity of 0.28 m/s² (35.0× smaller than Earth's gravity) determines how objects behave on its surface. The moderate density suggests a mixed composition of rocky and icy materials.

Orbital Properties

The 1 Ceres orbit reveals fascinating details about its journey around the Sun and its relationship to other Solar System objects. The 1 Ceres orbit has a semimajor axis of 4.14e+8 km (2.767 AU), placing it 2.8× Earth's distance from the Sun. At its closest approach (perihelion), 1 Ceres comes within 3.83e+8 km of the Sun, while at its farthest point (aphelion), it reaches 4.45e+8 km, creating a 15.2% variation in solar distance. The 1 Ceres orbit is nearly circular with an eccentricity of 0.076 (4.5× Earth's orbital eccentricity), resulting in relatively stable solar heating throughout its year. The 1 Ceres orbit takes 0.47 hours to complete (18766.4× smaller than Earth's orbital period), defining the length of its year. The orbital inclination of 10.593° indicates how much the 1 Ceres orbit is tilted relative to the Solar System's ecliptic plane. This moderate inclination indicates a typical orbital evolution for objects in this region of the Solar System.

Rotation and Tilt

The 1 Ceres rotation and axial orientation provide crucial insights into its daily and seasonal cycles, as well as its orbital dynamics. The 1 Ceres rotation period of 0.00 hours (9499.9× 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 1 Ceres axial tilt of 3° (7.8× smaller than Earth's axial tilt) determines the intensity and nature of seasonal variations. With minimal axial tilt, 1 Ceres experiences virtually no seasonal changes, maintaining relatively constant temperatures throughout its year. The orbital orientation parameters reveal additional details about 1 Ceres's position in space. The mean anomaly of 77.372° indicates the planet's current position in its orbit relative to its perihelion. The argument of periapsis of 73.598° shows how the orbit's orientation changes over time due to gravitational perturbations. The longitude of ascending node of 80.306° defines the reference point where the orbit crosses the ecliptic plane.

Temperature and Atmosphere

The 1 Ceres temperature and atmospheric conditions are fundamental to understanding its habitability and environmental characteristics. The 1 Ceres average temperature of 168.0 K (-105.1 °C) (-157.3°F) provides the baseline for understanding its climate. These extremely cold temperatures make 1 Ceres 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), 1 Ceres presents a dramatically different thermal environment. Being farther from the Sun than Earth, 1 Ceres receives less solar radiation, resulting in cooler conditions.

Escape Velocity & Flattening

The 1 Ceres escape velocity and shape characteristics reveal important details about its gravitational field and rotational dynamics. The 1 Ceres escape velocity of 510 m/s (21.9× smaller than Earth's escape velocity) 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 1 Ceres to retain a substantial atmosphere. The 1 Ceres flattening of 96.1900% indicates how much the planet's rotation affects its shape. This significant flattening indicates rapid rotation that has substantially deformed the planet's shape, creating a pronounced equatorial bulge. The equatorial radius of 487 km compared to the polar radius of 455 km demonstrates this rotational deformation.

FAQs About 1 Ceres

What is the gravity on 1 Ceres?

The gravity on 1 Ceres is 0.28 m/s² (35.0× smaller than Earth's gravity). This gravitational force determines how objects behave on the surface, affects atmospheric retention, and influences the planet's ability to hold onto gases and particles. A person weighing 70 kg on Earth would weigh 2.0 kg on 1 Ceres.

How big is 1 Ceres compared to Earth?

1 Ceres has a radius of 476.2 km, making it 13.4× smaller than Earth's size. In terms of volume, 1 Ceres is 0.0× the size of Earth. This size difference significantly impacts the planet's gravity, atmospheric retention, geological processes, and overall planetary characteristics.

What is the average temperature of 1 Ceres?

The average temperature of 1 Ceres is 168.0 K (-105.1 °C) (-157.3°F). This temperature is influenced by factors such as distance from the Sun, atmospheric composition, albedo (reflectivity), and orbital eccentricity. The sub-zero temperatures mean water would exist primarily as ice.

How far is 1 Ceres from the Sun?

1 Ceres orbits at an average distance of 4.14e+8 km (2.767 AU) from the Sun, placing it 2.8× 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 1 Ceres?

A year on 1 Ceres lasts 0.47 hours (18766.4× 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 the escape velocity of 1 Ceres?

The escape velocity of 1 Ceres is 510 m/s (21.9× smaller than Earth's escape velocity). This is the minimum speed required for an object to break free from the planet's gravitational pull and enter space. The low escape velocity makes it difficult for the planet to retain an atmosphere.

What is 1 Ceres made of?

1 Ceres has a density of 2.161 g/cm³ (2.5× smaller than Earth's density). This density provides important clues about the planet's internal composition. The moderate density suggests a mixed composition of rocky and icy materials.

Does 1 Ceres have seasons?

1 Ceres has an axial tilt of (7.8× smaller than Earth's axial tilt). With minimal axial tilt, the planet experiences virtually no seasonal changes, maintaining relatively constant temperatures throughout its year.
Discovery Information
Discovered By
Giuseppe Piazzi
Discovery Date
01/01/1801
Raw Data